How to cut a pipe straight along

How to cut a pipe evenly with a grinder at 45 and 90 degrees | Cutting methods

When working with construction or plumbing tasks, you need to know how to cut a pipe evenly with a grinder. In this article we will look at quick and easy ways of how to properly cut a pipe with a grinder so that the result is perfect.

Cutting pipe at an angle of 45 and 90 degrees

If you need to cut a pipe at an angle of 45 degrees, which is often required when laying water and heating pipes. Often steel and cast iron pipes that have a cylindrical shape are used. In installation work, rectangular or profile pipes are used. However, you should cut the pipe correctly with a grinder so that you can easily connect it later. Therefore, you should carefully mark the pipe.

Some craftsmen try to mark the cutting area using a tape measure, but we warn you that the result will most likely be negative. And for a positive result, consider the following recommendation from professionals.

Take a sheet of paper or cardboard, preferably A4, fold it diagonally and wrap it around the pipe where you plan to make an even cut. The edges of the paper must be absolutely aligned with each other. And the side of the paper that is closer to the end of the pipe was perpendicular to the axis. Then mark a cutting line in a circle.

If you need to cut exactly at an angle of 90 degrees, then solve the problem quickly using paper or masking tape. Wrap it around the pipe so that the ends match. Make an even mark and saw off.

How to cut a profile pipe evenly?

Craftsmen advise using a square when cutting a profile pipe. To do this, apply the square to the sides one by one, and turn and apply marks with smooth movements. After the steps, secure the pipe and cut. Prepare yourself a template that will be useful in the future and will save time. It is better to carry out the action with a grinder, so the cut will be smoother.

How to cut a cast iron pipe?

When working with cast iron pipe, keep in mind that it is a fragile material. Therefore, we will find a way to cut such metal without damage.

Before starting work, make notes for the cut, as you would when working with steel pipes. Place a wooden beam for support. Run a grinder around the circumference of the pipe, making small cuts. Then take the chisels, insert them into the groove and hit them hard with a hammer. Please note that Bakelite-based cutting discs are used to cut cast iron pipes.

If you don’t have a grinder at hand to cut a cast-iron sewer pipe or other purposes, use a hacksaw, chisels or special pipe cutters.

How to cut a gas pipe?

Cutting a gas pipe is a dangerous action, so it is best to leave it to professionals. But if you are confident in your abilities, then use a grinder, welding, hacksaw, or gas welding to cut metal.

Trimming instructions:

  • Before work, turn off the gas supply riser. Then release the rest of the gas from the pipe. To do this, light the gas in the burners and wait for it to go out.
  • After these steps, cut. Using a welding method, the metal base burns when exposed to high temperature. The result is fast and effective. But remember that cutting or rooting gas pipes again requires experience.

Methods for cutting large diameter pipes

For cutting large diameter pipes, such as sewer pipes, there are a number of reliable tools available. Next, let's look at some of them in detail:

  • The grinder is an inexpensive and accessible option, but it is considered not the safest when working with such materials. If you decide to use this method, be careful and use protective equipment.
  • A roller machine (pipe cutter) is a tool adapted for such manipulations. The device is attached and material removal begins. The clamping force is adjusted using mechanical devices. It is important to note that machine models differ in shape, so before use, consider the size relationship with the pipe.
  • Gas cutting is the most popular option for cutting larger diameter pipes and sheet metal. The cut occurs due to the action of a high intensity flame, the metal melts and leaves the cut zone with a gas flow. This method is convenient and effective.

How to cut a pipe lengthwise correctly?

A quick way to cut a pipe lengthwise using a grinder:

  • Pay main attention to the markings.
  • For this case, use painting thread, which is widely used when marking walls.
  • Before starting work, secure the pipe and, using small movements, carefully saw the pipe.
  • It’s better not to rush, but delicately and slowly process the parts of the pipe, so that the cutting disc does not jump off the marking lines. Remember safety precautions.

How to cut thin-walled pipes?

Thin-walled pipes are made of non-ferrous metals: aluminum, copper. Such work should be done delicately, as there is a high probability of deformation of the material. For cutting, fillers such as sand are used. Actions can be carried out using a grinder or a special machine.

To summarize, we emphasize that cutting metal pipes is a complex process, but every willing craftsman can improve it. Using the advice of professionals, you can easily cope with cutting pipes of various sizes and materials.

Also, do not forget to process the edges of the pipes after cutting with a file or sandpaper. And the most important thing to remember when starting such actions is safety precautions. When starting work, wear a special suit (casing), mask or closed-type glasses.

Your hands should also be reliably protected from sparks, so use thick gloves.

Source: https://UkrAbraziv.com.ua/novosti/43-kak-rovno-otrezat-trubu-bolgarkoj

How to cut a profile pipe lengthwise or crosswise: marking and cutting methods

In households, profile pipes are widely used in the manufacture of greenhouses, greenhouses, canopies to protect vehicles from precipitation and other structures. When working with this material, it is useful to know how to cut a profile pipe along a line or crosswise with the most accurate angle.

Among the large number of construction metal cutting tools, the leader in speed, ease of cutting and efficiency is the angle grinder (grinder), which is often present in the tool kit of any home craftsman. To cut a profile steel pipe using a grinder, you will need a regular metal disc and strict adherence to safety rules - breaking the disc into segments at high rotation speeds can lead to serious injuries.

Fig.1 Profile pipes in the household

How to cut a profile pipe straight across

Most often in households, a rectangular or square pipe metal profile with a wall thickness of no more than 3 mm is used, and cutting into separate sections is necessary when carrying out work on assembling welded frames.

To cut a pipe correctly, additional devices are used to mark and mark the cutting line; some of the devices serve as a support edge for the cutting disk.

The nuances of working with a rectangular section

Rectangular workpieces are much easier to cut lengthwise and crosswise at any angles than cylindrical elements, which are difficult to hold stationary on a flat surface.

Transverse cutting of workpieces at any angle does not present any particular difficulties - the line of the required angular slope is drawn on the side edge and always coincides with the calculated one (round elements require the use of special patterns, calculated on a computer, to align their edges at an angle other than a straight line).

The thickness of the walls of a metal profile when used in households rarely exceeds 5 mm - it is easy to cut using an angle grinder with any metal disc.

Rice. 2 Types of transverse marking methods

What tool is used

As noted above, the main tool for cutting metal parts at home is an angle grinder; if you don’t have one, you can use a hand-held hacksaw or a jigsaw, which can also cut metal materials with a special diamond-coated blade.

For cutting with a grinder, cut-off electrocorundum discs are used, which are not intended for grinding operations. As an auxiliary tool, a tape measure, a metal ruler, various types of clamps, pencils and markers for marking will be useful.

Paper pattern for pipe

Using a paper sheet is a simple method of marking a rectangular or square profile for precise cutting at an angle of 90 or 45 degrees towards its axis.

To make markings for cross cutting at an angle of 90 degrees, take a sheet of paper and wrap it around the pipe until the edges line up exactly, after which they are glued together. With this method, the cutting line is very clearly visible, unlike drawing it with a pencil or marker along the edge of the template.

After this, the profile is cut along the template edge alternately from all sides, trying to avoid complete cutting of the finishing sections - this can lead to the disk hitting sharp corners and its destruction.

A sheet of paper can also be used to mark the side walls of rectangular or square pipes. To do this, the paper sheet is folded diagonally, and the resulting 45-degree angle is applied to the side walls and the appropriate markings are made. To ensure that the side lines are at the same level, an acute angle is applied to the transverse line placed at an angle of 90 degrees to the axis, which is previously applied in the above manner.

Rice. 3 Using a steel template

Miter box for cutting pipes

It is very convenient to cut a profile pipe using a special template, which is an analogue of a construction miter box for cutting building materials at different angles.

To do this, using the above or another method, a metal template is made from a piece of profile pipe cut along the length; it can be designed to obtain a right angle or an angle of 45 degrees.

To cut a metal profile, apply a template to it and draw a line with a scriber, along which a cut is then made. In other cases, the template is held and a grinder is used to draw a line along the surface of the workpiece, trying to avoid strong pressing of the side surface of the disk against the attached metal template. Then the template is removed and cutting continues along a clearly visible depression on the edges of the workpiece.

Using a template, you can get a very straight cut line if you do not hold it manually, but secure it to the workpiece using clamps or mounting bolts.

To make your own fasteners, drill a hole in the side surface of the U-shaped plate of the template and weld a union nut at this point from the outside into which the bolt is screwed.

To secure the template, place it on the part to be cut and screw in the bolt, pressing the template surface against the workpiece, then use a grinder with a metal disc to make a cut, lightly touching the guide edge.

Rice. 4 How to cut a workpiece with a homemade machine

Other options

A good option for making a template is to use a short piece of larger diameter pipe for marking, the guide edge of which has been pre-cut at the desired angles. When marking, the part is placed on the pipe to be cut, after which its surface is marked with a marker or scriber. The second method is to rigidly fix the template on the workpiece using wedges or clamps, followed by cutting with a metal disc with light pressure on the side surface of the template part.

In order not to cut metal pipes or sheets of iron by eye, some home craftsmen use homemade fastening devices for the grinder, rigidly securing it to a vertically mounted spindle. When moving the tool from top to bottom, a stable, even cut occurs on the part located under the disk; if metal guides are fastened to the machine bed, then when a workpiece is applied to them, any desired cutting angle can be obtained.

Fig.5 Working with thick-walled steel

Cutting large diameter profile pipe

A large-diameter metal profile has thick walls and a lot of weight; if for cutting thin-walled parts (wall thickness up to 2 mm) it was possible to use thin disks of about 1 mm in size, then for cutting thick-walled metal they take 2 mm.

disc circles.

Accordingly, it is more convenient to cut thick walls with a large-diameter disk using a powerful large-sized construction angle grinder - household devices do not have enough power to quickly carry out work, and their small disks quickly wear down.

Source: https://montagtrub.ru/kak-razrezat-profilnuyu-trubu-vdol-poperek-rovno/

How to saw off a profile pipe smoothly with a grinder

In households, profile pipes are widely used in the manufacture of greenhouses, greenhouses, canopies to protect vehicles from precipitation and other structures. When working with this material, it is useful to know how to cut a profile pipe along a line or crosswise with the most accurate angle.

Among the large number of construction metal cutting tools, the leader in speed, ease of cutting and efficiency is the angle grinder (grinder), which is often present in the tool kit of any home craftsman. To cut a profile steel pipe using a grinder, you will need a regular metal disc and strict adherence to safety rules - breaking the disc into segments at high rotation speeds can lead to serious injuries.

Fig.1 Profile pipes in the household

How to cut a profile pipe lengthwise - cutting technology

If cross-cutting a profile does not cause any particular difficulties, then a longitudinal cut, which is necessary for some work in the household, is more complex due to its length.

One of the problems when carrying it out is the accuracy of the markings; to apply it in the center or at another point of the cut edge, marks are placed along the entire length at the same distance from the side wall and then they are connected with a pencil, marker or scriber, using an even corner, construction paper, as a guide. usually a level, a profile from drywall.

Rice. 6 Cutting a pipe lengthwise along a guide angle

In order to cut a metal profile in the longitudinal direction, they drive the angle grinder along the line, gradually cutting a through hole - the method is not very accurate, the tool has to be held suspended without support.

A more convenient way to qualitatively cut a workpiece longitudinally is to use auxiliary supports in the form of a metal corner or even straight plates. To do this, the corner is attached to the surface of the workpiece using clamps and the grinder is guided along its side edge; if the length of the template corner is small, it is unscrewed and moved further to a new place, after which cutting is resumed.

Source: https://MyTooling.ru/instrumenty/kak-rovno-otpilit-profilnuju-trubu-bolgarkoj

How and with what to cut the pipe: exactly at 90°, at an angle of 45°

The use of [metal pipes] in the production and installation of metal structures involves the need for cutting across, along and at an angle. And you don’t always have special equipment at hand. We will describe in this article how to cut a pipe evenly using available tools.

Tools used

A simple operation at first glance, cutting pipes in practice reveals many nuances and pitfalls. If not, just cut the tubes evenly:

  • Thin-walled.
  • Large diameter.
  • With a bevel.

It is very important to choose the cutting method and special equipment suitable for each specific case. It is divided into individual, household and industrial.

Required Tools

For individual use

They are used in households, private construction and small businesses. Deal with small and medium diameters (up to 250 mm) used in systems

  • Water supply.
  • Heating.
  • Sewer.
  • Ventilation.

Such tools include:

  • Cutters. Used to evenly cut polymer pipes up to 75 mm. To make an even and neat cut they have a gear mechanism. The workpiece is first clamped with a shelf clamp, which securely fixes it and prevents it from leaving the cutting line.
  • Disc cutter. Suitable for ventilation and sewer polymer pipes with a diameter of up to 200 mm. The blade is not a secateur type, but in the form of a disk rolling along the surface of the workpiece. The cut is made in several turns. Not suitable for rolled metal-plastic, as it can crush the thin metal liner.
  • Guillotine. The flat oblique knife moves in the guides and allows you to cut exactly the required length in one pass. It is available both with an electric drive, which provides greater productivity, and with a manual drive.
  • Hacksaw for metal. A classic metalworking tool allows you to evenly cut a workpiece clamped in a vice. When using, it is important to drive the saw smoothly, with constant force and without distortion. Burrs formed after using a hacksaw should be cleaned with a file.
  • Angle grinder, angle grinder. In everyday life it is called “grinder”. This universal tool can handle any materials and diameters. In order to cut a pipe with a grinder, special abrasive cutting discs are used.
  • Electric jigsaw. A very popular tool among home craftsmen, it can also cut pipes, but due to the flexible blade moving to the side, you can only dream of accuracy.
  • Reciprocating saw. The instrument has not yet become widespread among Russian craftsmen. The adjustable stop of the saw and its powerful blade allow you to cut off rolled products even while suspended and close to the wall.

Cutter

Guillotine

Reciprocating saw

How to cut a pipe straight

To ensure an even cut from a general-purpose tool, special devices should be used to fix the workpiece. These can be templates, vices or miter boxes. In addition, it is very important to correctly mark the future cut and, while working, make sure that the cutting line does not go to the side.

For industrial use

Such equipment is used in industries where the volume of work is large or large diameter pipes have to be cut. To cut straight, use:

  • Lathe. Suitable for high-precision cutting of workpieces, chamfering, making ledges, diameter transitions and other shaped processing. Allows you to lathe and cut threads, both internal and external. The length of the part is limited by the overhang of the machine head. Diameter - overhang of the chuck jaws.
  • Tape machines. They are used to cut a large diameter pipe without removing it from a trench or collector point. They also work on deformed products.
  • Disc cutting machines. Highly automated installation with a pendulum saw and a workpiece feeding mechanism. Often included in the production line, it is used for high-performance cutting of rolled products into equal pieces.
  • Manual disk installations. Mobile equipment is used to cut the rolled products exactly right at the installation site. Equipped with a multifunctional clamp that allows you to securely fix products of different diameters and cut them evenly without damaging the edges. The rotating work table allows you to cut smoothly at any angle. The most advanced models are equipped with an orbital welding system. This allows you not only to cut, but also to connect segments.

CNC Pipe Cutting Machine

Making a template for cutting metal profiles

If you need to cut out a mass of pipes, make a template from a metal profile of a larger diameter on a cardboard sheet using the above method. The angle of inclination is checked with a protractor or a construction square - and then the two edges of the docked parts of the template are connected.

While working, on the part to be cut, where the template fits comfortably and is pressed tightly, the markings are applied with a sharply sharpened scriber while tracing the template outline. The part is cut in several passes with a gradual deepening of the groove.

Rice. 3 Cutting a metal profile using a miter box

Cutting technology

As a rule, the volume and complexity of work required by a home craftsman does not require the use of high-performance and expensive production-level equipment. When making a greenhouse frame, you can completely cut the pipes with a grinder or a traditional hand saw.

Each type of cut has its own nuances, and some require special tricks.

Right angle

The accuracy of the cut is largely determined by the quality of the markings. Experienced craftsmen advise marking cutting lines not with a pencil, but with masking tape, following the following sequence of actions:

  • Set aside the required size and make a small mark with a marker or pencil.
  • Carefully, applying to the mark, cover the part with masking tape in a circle. The edges of the paper should meet without moving. This is a sign that the paper is pasted correctly. If the edges do not meet, the tape needs to be re-glued.
  • Securely fix the workpiece to prevent it from moving or distorting during work. For fixation, use a vice or clamps.
  • The cut (smaller) piece of the workpiece should be left hanging so that it does not pinch the blade or disk.
  • The cut starts from the top.
  • The grinder disk (or hacksaw blade) is guided exactly along the edge of the masking tape, without deviating to the side.

This will allow you to cut exactly the required length.

If the diameter is large, then the markings are done in the same way, but cut in parts, in sectors of 30-60°. After cutting the next sector, the fastenings are loosened and the pipe is rotated. Then they fix it again and continue cutting from the place where the previous sector ended. To make it smooth, special attention should be paid to the beginning of the cut, avoiding steps and nicks.

Oblique incision at 45°

It is possible to cut the end of the pipe exactly at 45° without the use of complex devices. All you have to do is use your plumbing skills. You will need to do the following:

  • Cut a piece of paper into a square shape.
  • Fold diagonally. Learn the right isosceles triangle.
  • Wrap the workpiece with a sheet so that the leg of the triangle is perpendicular to the axis, and the hypotenuse forms an upward spiral.
  • Secure the sheet with tape.
  • Fix the workpiece and cut along the oblique edge of the sheet. It will turn out at 45°.

Pipe bevel cutting

There is another popular method. The end of the workpiece is immersed in a container with liquid at the required angle. You need to cut along the border of the wet and dry areas.

If you need to cut not perpendicularly, then it is better to use an old carpentry tool - a miter box.

This is a U-shaped template, in the side walls of which slots have already been made at specified angles. The pipe is placed against the wall of the miter box farthest from the master and pressed there with a hand or a hand clamp. The hand saw blade is inserted into the appropriate grooves and sawed. If necessary, cut at a different angle, you can make additional cuts in the walls of the miter box.

For personal use

To cut iron pipes in the household, the following tools are used:

Manual pipe cutters. Allows you to cut round parts to obtain an even, right angle of cut using the cutting edges of the rollers. There are several varieties of products of this type, consisting of single rollers, as they are also called, in a row, attached to a chain. In everyday life, such devices are found quite rarely and are more suitable for professional work.

Bulgarian. It is a universal tool for cutting all iron parts with different angles; to perform the work, special metal discs are used, which are quickly ground down during use. Therefore, there is an option to accurately cut a curved line with a disk of small diameter.

THIS IS INTERESTING:  How to bend a pipe for a greenhouse

Rice. pipe cutting tool

Source: https://instanko.ru/elektroinstrument/kak-rovno-otrezat-trubu.html

How to cut a plastic pipe straight along

Quite often, when performing various construction or repair work, it becomes necessary to cut a pipe. This could be plumbing work, laying pipelines or installing heating systems, but in any case it is necessary to know how to cut a pipe evenly. Some features of performing this task will be discussed further.

45 degree cutting

One particular example of such a situation is the need to cut a metal pipe at an angle of 45 degrees. Such cutting of material is often required when laying water pipes or heating systems. In this case, you have to deal with steel pipes.

For these purposes, conventional cylindrical pipes are usually used. If we are talking about the installation of some kind of metal structures, then profile pipes of rectangular or square cross-section are more often used.

The main problem here is that in order for the elements to be connected to coincide, the cut must be as smooth as possible, which means that especially close attention should be paid to marking the material.

In cases where cutting at an angle is required, a simple square sheet of paper can be used as a marking template. It must be folded strictly diagonally, and then wrapped around the pipe with the template.

In this case, it is necessary to carefully ensure that the side of the sheet, which is located closer to the end of the pipe, is perpendicular to its central axis.

Next, using marking material, a series of dotted lines is applied and after the marking is completed along the entire circumference, the template can be removed.

If you have to cut a profile pipe, then it is advisable to make a special template from the same pipe, but with a larger cross-section. In this case, you will only have to use the measuring devices once.

To apply markings you will need to use a protractor or a construction square. After sawing off the template, the pipes to be cut can simply be inserted into it and marked.

This approach will significantly save work time and cutting a profile pipe at 45 degrees will be convenient.

As for what to use when carrying out work, you should choose the most suitable and familiar one. This can be a simple hacksaw for metal, or a grinder with an installed cutting disc.

90 degree cutting

When the need arises to cut at 90 degrees, the situation is even simpler. In the case of cylindrical elements, you can use the same sheet of paper that is used to wrap the pipe as a template. It is important to ensure that the edge of the sheet is smooth and matches the entire circumference. After marking is applied, the element to be cut is fixed and the cut is made.

Source: https://vi-pole.ru/kak-razrezat-plastikovuju-trubu-vdol-rovno.html

Methods for marking and cutting metal pipes

The use of [metal pipes] in the production and installation of metal structures involves the need for cutting across, along and at an angle. And you don’t always have special equipment at hand. We will describe in this article how to cut a pipe evenly using available tools.  

Methods for cutting metal pipes at an angle 

There are several ways to saw off a pipe or cut it into pieces. Of the available tools, a grinder is the best for this task. But the biggest problem remains the need to correctly mark the cutting lines. They can be different, most often you have to maintain either a right angle relative to the axis of the pipe, or 45 degrees. The techniques vary somewhat depending on what products need to be cut:

  • pipes for laying water supply, gas and for heating distribution;
  • profile products for assembling gates, canopies, and other metal structures;
  • large-diameter pipes - as a rule, this is rarely needed at home, where the widest clearance is only in the sewer system;
  • pipes made of steel, cast iron, thin-walled of non-ferrous metals and soft alloys. 

Both problems can be solved quite simply even without the use of a special pipe angle pattern. 

IMPORTANT TO KNOW: Steel water and gas pipe

We cut the pipe at an angle of 90 degrees 

To mark the cut [of water and gas pipes] at a right angle, you can use a sheet of standard A4 paper, wide electrical tape or construction tape. If you wrap a wide enough material around the pipe so that the edges line up exactly when applied, you will get a perfect cutting line. If the tape or tape is firmly stuck to the metal, you can go right along the edge.  

It is important to be able to use the grinder correctly, hold it with a certain force and follow safety rules. The technique described is the simplest; it is also suitable for cutting a large diameter pipe.   

We cut the pipe at an angle of 45 degrees 

Most often this has to be done when installing plumbing and heating and assembling frame structures. You can cut the pipe at 45 degrees with a grinder according to the markings, which are made either with a sheet of paper of the same A4 size, or using a regular school (drawing) isosceles square.  

Use a sheet of paper or cardboard 

You will have to do several operations with the sheet to get the desired angle. If you don't want to get confused with the folds, just make it square and fold it diagonally to get the angle you want. The same can be done with any sheet, as long as its sides are equal to each other. The method is convenient in that it can be applied to both large-diameter pipes and [profile pipes of square and rectangular cross-section].  

IMPORTANT TO KNOW: Profile stainless pipe

Marking with a square 

If you have a square at hand, you must first determine the exact line of the end of the pipe, including the profile one. By applying the tool and smoothly moving it along the surface, we get a cutting line of 45 degrees. The same technique is used with a 30 degree square.  

How to properly cut pipes from different metals 

Accurate cutting and trimming of pipes depends not only on well-executed markings. The material is also of great importance - metal of different thicknesses and hardness is cut with different forces and side effects. To properly cut a cast iron pipe, it should not be sawed all the way through. Cast iron is a brittle metal, so several cuts are usually made, and then a specialist knocks a piece out of them with one precise blow of a chisel.  

To work with thin-walled pipes, you will have to very accurately check the position of the grinder. At the same time, the master must choose the right [discs for cutting metal with a grinder]. In industrial settings, special pipe cutters, gas cutting machines and welding machines can be used to perform the same tasks.  

IMPORTANT TO KNOW: Seamless cold-formed pipes

Safety when cutting a gas pipe 

When working with gas pipes connected to the mains, it is important to follow safety precautions. First turn off the gas supply valve, then make sure that there is nothing in the pipe. To do this, just open the stove burners and light the gas - when it runs out, the flame goes out.  

Source: https://rezhemmetall.ru/sposoby-razmetki-i-rezki-metallicheskix-trub.html

How to cut a pipe evenly - tools and cutting methods

:

What tools are used to cut pipes?

Tools for home and semi-professional use

Industrial equipment

Pipe cutting technique

Straight cut

Miter cutting

In everyday life, we are constantly faced with the need to lay pipelines from various materials, be it water supply, sewerage, heating, installation of cable ducts, or even the construction of frame structures in a house or country house.

This article will tell you how to evenly cut a pipe for certain purposes, if you do all the work yourself, that is, it provides detailed instructions for all technological operations.

In addition, let's talk about the variety of tools for amateur or industrial use.

What tools are used to cut pipes?

At first glance, it may seem that cutting pipes is a fairly simple process that is not worth special mention. However, this is not quite true.

It’s one thing when you don’t need precise, even cuts at an angle of 90º or any other, since no further welding or joining of the ends will be performed. And it’s a completely different matter when you need to make an absolutely precise cut.

Note that if it is necessary to cut oblique ends with an exact angle, it is worth consulting with experienced craftsmen.

Separately, it is worth mentioning pipes with a large diameter, when joining which a cut of exactly 90º must be ensured. Be that as it may, all these operations are performed using special equipment.

Tools for home and semi-professional use

To install water supply or sewerage systems, heating and ventilation circuits in home construction or when providing construction services, tools from this category are often used.

Among the most common devices are:

  1. Cutters with pruner design . This tool is used for cutting polymer pipes whose cross-section does not exceed 75 mm. The gear mechanism of the device allows you to apply the force necessary for work. The design of such a cutter includes a special shelf on which the pipe is laid, which ensures an even cut at exactly 90º. Prices for such tools can be very different, it all depends on their quality, dimensions, capabilities, manufacturer and other factors.
  2. Disc type pipe cutter

Source: https://trubaspec.com/montazh-i-remont/kak-rovno-otrezat-trubu-instrumenty-i-sposoby-otrezaniya.html

Source: https://HouseChief.ru/kak-rovno-otrezat-trubu-bolgarkoj.html

How to cut a pipe evenly with a grinder

How to cut a pipe evenly with a grinder

How to cut a pipe evenly with a grinder

How to cut a pipe evenly with a grinder

In households, profile pipes are widely used in the manufacture of greenhouses, greenhouses, canopies to protect vehicles from precipitation and other structures. When working with this material, it is useful to know how to cut a profile pipe along a line or crosswise with the most accurate angle.

Among the large number of construction metal cutting tools, the leader in speed, ease of cutting and efficiency is the angle grinder (grinder), which is often present in the tool kit of any home craftsman. To cut a profile steel pipe using a grinder, you will need a regular metal disc and strict adherence to safety rules - breaking the disc into segments at high rotation speeds can lead to serious injuries.

Fig.1 Profile pipes in the household

How to cut a profile pipe straight across

How to saw off a profile pipe smoothly with a grinder

How to saw off a profile pipe smoothly with a grinder

How to saw off a profile pipe smoothly with a grinder

Quite often, when performing various construction or repair work, it becomes necessary to cut a pipe. This could be plumbing work, laying pipelines or installing heating systems, but in any case it is necessary to know how to cut a pipe evenly. Some features of performing this task will be discussed further.

45 degree cutting

How to mark a pipe straight along

How to mark a pipe straight along

How to mark a pipe straight along

Pipes are a widely used building material. They are used in the installation of various systems. A common occurrence during the installation process is when pipes need to be joined at an angle. However, the technology for producing such work does not seem quite common.

To create this connection configuration, the pipes must be cut at an angle. Let's look at how such operations are performed and what cutting methods exist.

Techniques for cutting pipes at an angle

How to cut a pipe evenly with a grinder at 45 and 90 degrees | Cutting methods

When working with construction or plumbing tasks, you need to know how to cut a pipe evenly with a grinder. In this article we will look at quick and easy ways of how to properly cut a pipe with a grinder so that the result is perfect.

Cutting pipe at an angle of 45 and 90 degrees

If you need to cut a pipe at an angle of 45 degrees, which is often required when laying water and heating pipes. Often steel and cast iron pipes that have a cylindrical shape are used. In installation work, rectangular or profile pipes are used. However, you should cut the pipe correctly with a grinder so that you can easily connect it later. Therefore, you should carefully mark the pipe.

Some craftsmen try to mark the cutting area using a tape measure, but we warn you that the result will most likely be negative. And for a positive result, consider the following recommendation from professionals.

Take a sheet of paper or cardboard, preferably A4, fold it diagonally and wrap it around the pipe where you plan to make an even cut. The edges of the paper must be absolutely aligned with each other. And the side of the paper that is closer to the end of the pipe was perpendicular to the axis. Then mark a cutting line in a circle.

If you need to cut exactly at an angle of 90 degrees, then solve the problem quickly using paper or masking tape. Wrap it around the pipe so that the ends match. Make an even mark and saw off.

How to cut a profile pipe evenly?

Craftsmen advise using a square when cutting a profile pipe. To do this, apply the square to the sides one by one, and turn and apply marks with smooth movements. After the steps, secure the pipe and cut. Prepare yourself a template that will be useful in the future and will save time. It is better to carry out the action with a grinder, so the cut will be smoother.

How to cut a cast iron pipe?

When working with cast iron pipe, keep in mind that it is a fragile material. Therefore, we will find a way to cut such metal without damage.

Before starting work, make notes for the cut, as you would when working with steel pipes. Place a wooden beam for support. Run a grinder around the circumference of the pipe, making small cuts. Then take the chisels, insert them into the groove and hit them hard with a hammer. Please note that Bakelite-based cutting discs are used to cut cast iron pipes.

If you don’t have a grinder at hand to cut a cast-iron sewer pipe or other purposes, use a hacksaw, chisels or special pipe cutters.

How to cut a gas pipe?

Cutting a gas pipe is a dangerous action, so it is best to leave it to professionals. But if you are confident in your abilities, then use a grinder, welding, hacksaw, or gas welding to cut metal.

Trimming instructions:

  • Before work, turn off the gas supply riser. Then release the rest of the gas from the pipe. To do this, light the gas in the burners and wait for it to go out.
  • After these steps, cut. Using a welding method, the metal base burns when exposed to high temperature. The result is fast and effective. But remember that cutting or rooting gas pipes again requires experience.

Methods for cutting large diameter pipes

For cutting large diameter pipes, such as sewer pipes, there are a number of reliable tools available. Next, let's look at some of them in detail:

  • The grinder is an inexpensive and accessible option, but it is considered not the safest when working with such materials. If you decide to use this method, be careful and use protective equipment.
  • A roller machine (pipe cutter) is a tool adapted for such manipulations. The device is attached and material removal begins. The clamping force is adjusted using mechanical devices. It is important to note that machine models differ in shape, so before use, consider the size relationship with the pipe.
  • Gas cutting is the most popular option for cutting larger diameter pipes and sheet metal. The cut occurs due to the action of a high intensity flame, the metal melts and leaves the cut zone with a gas flow. This method is convenient and effective.

How to cut a pipe lengthwise correctly?

A quick way to cut a pipe lengthwise using a grinder:

  • Pay main attention to the markings.
  • For this case, use painting thread, which is widely used when marking walls.
  • Before starting work, secure the pipe and, using small movements, carefully saw the pipe.
  • It’s better not to rush, but delicately and slowly process the parts of the pipe, so that the cutting disc does not jump off the marking lines. Remember safety precautions.

How to cut thin-walled pipes?

Thin-walled pipes are made of non-ferrous metals: aluminum, copper. Such work should be done delicately, as there is a high probability of deformation of the material. For cutting, fillers such as sand are used. Actions can be carried out using a grinder or a special machine.

To summarize, we emphasize that cutting metal pipes is a complex process, but every willing craftsman can improve it. Using the advice of professionals, you can easily cope with cutting pipes of various sizes and materials.

Also, do not forget to process the edges of the pipes after cutting with a file or sandpaper. And the most important thing to remember when starting such actions is safety precautions. When starting work, wear a special suit (casing), mask or closed-type glasses.

Your hands should also be reliably protected from sparks, so use thick gloves.

Source: https://UkrAbraziv.com.ua/novosti/43-kak-rovno-otrezat-trubu-bolgarkoj

How to cut a profile pipe lengthwise or crosswise: marking and cutting methods

In households, profile pipes are widely used in the manufacture of greenhouses, greenhouses, canopies to protect vehicles from precipitation and other structures. When working with this material, it is useful to know how to cut a profile pipe along a line or crosswise with the most accurate angle.

Among the large number of construction metal cutting tools, the leader in speed, ease of cutting and efficiency is the angle grinder (grinder), which is often present in the tool kit of any home craftsman. To cut a profile steel pipe using a grinder, you will need a regular metal disc and strict adherence to safety rules - breaking the disc into segments at high rotation speeds can lead to serious injuries.

Fig.1 Profile pipes in the household

How to cut a profile pipe straight across

Most often in households, a rectangular or square pipe metal profile with a wall thickness of no more than 3 mm is used, and cutting into separate sections is necessary when carrying out work on assembling welded frames.

To cut a pipe correctly, additional devices are used to mark and mark the cutting line; some of the devices serve as a support edge for the cutting disk.

The nuances of working with a rectangular section

Rectangular workpieces are much easier to cut lengthwise and crosswise at any angles than cylindrical elements, which are difficult to hold stationary on a flat surface.

Transverse cutting of workpieces at any angle does not present any particular difficulties - the line of the required angular slope is drawn on the side edge and always coincides with the calculated one (round elements require the use of special patterns, calculated on a computer, to align their edges at an angle other than a straight line).

The thickness of the walls of a metal profile when used in households rarely exceeds 5 mm - it is easy to cut using an angle grinder with any metal disc.

Rice. 2 Types of transverse marking methods

What tool is used

As noted above, the main tool for cutting metal parts at home is an angle grinder; if you don’t have one, you can use a hand-held hacksaw or a jigsaw, which can also cut metal materials with a special diamond-coated blade.

For cutting with a grinder, cut-off electrocorundum discs are used, which are not intended for grinding operations. As an auxiliary tool, a tape measure, a metal ruler, various types of clamps, pencils and markers for marking will be useful.

Paper pattern for pipe

Using a paper sheet is a simple method of marking a rectangular or square profile for precise cutting at an angle of 90 or 45 degrees towards its axis.

To make markings for cross cutting at an angle of 90 degrees, take a sheet of paper and wrap it around the pipe until the edges line up exactly, after which they are glued together. With this method, the cutting line is very clearly visible, unlike drawing it with a pencil or marker along the edge of the template.

After this, the profile is cut along the template edge alternately from all sides, trying to avoid complete cutting of the finishing sections - this can lead to the disk hitting sharp corners and its destruction.

A sheet of paper can also be used to mark the side walls of rectangular or square pipes. To do this, the paper sheet is folded diagonally, and the resulting 45-degree angle is applied to the side walls and the appropriate markings are made. To ensure that the side lines are at the same level, an acute angle is applied to the transverse line placed at an angle of 90 degrees to the axis, which is previously applied in the above manner.

Rice. 3 Using a steel template

Miter box for cutting pipes

It is very convenient to cut a profile pipe using a special template, which is an analogue of a construction miter box for cutting building materials at different angles.

To do this, using the above or another method, a metal template is made from a piece of profile pipe cut along the length; it can be designed to obtain a right angle or an angle of 45 degrees.

To cut a metal profile, apply a template to it and draw a line with a scriber, along which a cut is then made. In other cases, the template is held and a grinder is used to draw a line along the surface of the workpiece, trying to avoid strong pressing of the side surface of the disk against the attached metal template. Then the template is removed and cutting continues along a clearly visible depression on the edges of the workpiece.

Using a template, you can get a very straight cut line if you do not hold it manually, but secure it to the workpiece using clamps or mounting bolts.

To make your own fasteners, drill a hole in the side surface of the U-shaped plate of the template and weld a union nut at this point from the outside into which the bolt is screwed.

To secure the template, place it on the part to be cut and screw in the bolt, pressing the template surface against the workpiece, then use a grinder with a metal disc to make a cut, lightly touching the guide edge.

Rice. 4 How to cut a workpiece with a homemade machine

Other options

A good option for making a template is to use a short piece of larger diameter pipe for marking, the guide edge of which has been pre-cut at the desired angles. When marking, the part is placed on the pipe to be cut, after which its surface is marked with a marker or scriber. The second method is to rigidly fix the template on the workpiece using wedges or clamps, followed by cutting with a metal disc with light pressure on the side surface of the template part.

In order not to cut metal pipes or sheets of iron by eye, some home craftsmen use homemade fastening devices for the grinder, rigidly securing it to a vertically mounted spindle. When moving the tool from top to bottom, a stable, even cut occurs on the part located under the disk; if metal guides are fastened to the machine bed, then when a workpiece is applied to them, any desired cutting angle can be obtained.

Fig.5 Working with thick-walled steel

Cutting large diameter profile pipe

A large-diameter metal profile has thick walls and a lot of weight; if for cutting thin-walled parts (wall thickness up to 2 mm) it was possible to use thin disks of about 1 mm in size, then for cutting thick-walled metal they take 2 mm.

disc circles.

Accordingly, it is more convenient to cut thick walls with a large-diameter disk using a powerful large-sized construction angle grinder - household devices do not have enough power to quickly carry out work, and their small disks quickly wear down.

Source: https://montagtrub.ru/kak-razrezat-profilnuyu-trubu-vdol-poperek-rovno/

How to saw off a profile pipe smoothly with a grinder

In households, profile pipes are widely used in the manufacture of greenhouses, greenhouses, canopies to protect vehicles from precipitation and other structures. When working with this material, it is useful to know how to cut a profile pipe along a line or crosswise with the most accurate angle.

Among the large number of construction metal cutting tools, the leader in speed, ease of cutting and efficiency is the angle grinder (grinder), which is often present in the tool kit of any home craftsman. To cut a profile steel pipe using a grinder, you will need a regular metal disc and strict adherence to safety rules - breaking the disc into segments at high rotation speeds can lead to serious injuries.

Fig.1 Profile pipes in the household

How to cut a profile pipe lengthwise - cutting technology

If cross-cutting a profile does not cause any particular difficulties, then a longitudinal cut, which is necessary for some work in the household, is more complex due to its length.

One of the problems when carrying it out is the accuracy of the markings; to apply it in the center or at another point of the cut edge, marks are placed along the entire length at the same distance from the side wall and then they are connected with a pencil, marker or scriber, using an even corner, construction paper, as a guide. usually a level, a profile from drywall.

Rice. 6 Cutting a pipe lengthwise along a guide angle

In order to cut a metal profile in the longitudinal direction, they drive the angle grinder along the line, gradually cutting a through hole - the method is not very accurate, the tool has to be held suspended without support.

A more convenient way to qualitatively cut a workpiece longitudinally is to use auxiliary supports in the form of a metal corner or even straight plates. To do this, the corner is attached to the surface of the workpiece using clamps and the grinder is guided along its side edge; if the length of the template corner is small, it is unscrewed and moved further to a new place, after which cutting is resumed.

Source: https://MyTooling.ru/instrumenty/kak-rovno-otpilit-profilnuju-trubu-bolgarkoj

How and with what to cut the pipe: exactly at 90°, at an angle of 45°

The use of [metal pipes] in the production and installation of metal structures involves the need for cutting across, along and at an angle. And you don’t always have special equipment at hand. We will describe in this article how to cut a pipe evenly using available tools.

Tools used

A simple operation at first glance, cutting pipes in practice reveals many nuances and pitfalls. If not, just cut the tubes evenly:

  • Thin-walled.
  • Large diameter.
  • With a bevel.

It is very important to choose the cutting method and special equipment suitable for each specific case. It is divided into individual, household and industrial.

Required Tools

For individual use

They are used in households, private construction and small businesses. Deal with small and medium diameters (up to 250 mm) used in systems

  • Water supply.
  • Heating.
  • Sewer.
  • Ventilation.

Such tools include:

  • Cutters. Used to evenly cut polymer pipes up to 75 mm. To make an even and neat cut they have a gear mechanism. The workpiece is first clamped with a shelf clamp, which securely fixes it and prevents it from leaving the cutting line.
  • Disc cutter. Suitable for ventilation and sewer polymer pipes with a diameter of up to 200 mm. The blade is not a secateur type, but in the form of a disk rolling along the surface of the workpiece. The cut is made in several turns. Not suitable for rolled metal-plastic, as it can crush the thin metal liner.
  • Guillotine. The flat oblique knife moves in the guides and allows you to cut exactly the required length in one pass. It is available both with an electric drive, which provides greater productivity, and with a manual drive.
  • Hacksaw for metal. A classic metalworking tool allows you to evenly cut a workpiece clamped in a vice. When using, it is important to drive the saw smoothly, with constant force and without distortion. Burrs formed after using a hacksaw should be cleaned with a file.
  • Angle grinder, angle grinder. In everyday life it is called “grinder”. This universal tool can handle any materials and diameters. In order to cut a pipe with a grinder, special abrasive cutting discs are used.
  • Electric jigsaw. A very popular tool among home craftsmen, it can also cut pipes, but due to the flexible blade moving to the side, you can only dream of accuracy.
  • Reciprocating saw. The instrument has not yet become widespread among Russian craftsmen. The adjustable stop of the saw and its powerful blade allow you to cut off rolled products even while suspended and close to the wall.

Cutter

Guillotine

Reciprocating saw

How to cut a pipe straight

To ensure an even cut from a general-purpose tool, special devices should be used to fix the workpiece. These can be templates, vices or miter boxes. In addition, it is very important to correctly mark the future cut and, while working, make sure that the cutting line does not go to the side.

For industrial use

Such equipment is used in industries where the volume of work is large or large diameter pipes have to be cut. To cut straight, use:

  • Lathe. Suitable for high-precision cutting of workpieces, chamfering, making ledges, diameter transitions and other shaped processing. Allows you to lathe and cut threads, both internal and external. The length of the part is limited by the overhang of the machine head. Diameter - overhang of the chuck jaws.
  • Tape machines. They are used to cut a large diameter pipe without removing it from a trench or collector point. They also work on deformed products.
  • Disc cutting machines. Highly automated installation with a pendulum saw and a workpiece feeding mechanism. Often included in the production line, it is used for high-performance cutting of rolled products into equal pieces.
  • Manual disk installations. Mobile equipment is used to cut the rolled products exactly right at the installation site. Equipped with a multifunctional clamp that allows you to securely fix products of different diameters and cut them evenly without damaging the edges. The rotating work table allows you to cut smoothly at any angle. The most advanced models are equipped with an orbital welding system. This allows you not only to cut, but also to connect segments.

CNC Pipe Cutting Machine

Making a template for cutting metal profiles

If you need to cut out a mass of pipes, make a template from a metal profile of a larger diameter on a cardboard sheet using the above method. The angle of inclination is checked with a protractor or a construction square - and then the two edges of the docked parts of the template are connected.

While working, on the part to be cut, where the template fits comfortably and is pressed tightly, the markings are applied with a sharply sharpened scriber while tracing the template outline. The part is cut in several passes with a gradual deepening of the groove.

Rice. 3 Cutting a metal profile using a miter box

Cutting technology

As a rule, the volume and complexity of work required by a home craftsman does not require the use of high-performance and expensive production-level equipment. When making a greenhouse frame, you can completely cut the pipes with a grinder or a traditional hand saw.

Each type of cut has its own nuances, and some require special tricks.

Right angle

The accuracy of the cut is largely determined by the quality of the markings. Experienced craftsmen advise marking cutting lines not with a pencil, but with masking tape, following the following sequence of actions:

  • Set aside the required size and make a small mark with a marker or pencil.
  • Carefully, applying to the mark, cover the part with masking tape in a circle. The edges of the paper should meet without moving. This is a sign that the paper is pasted correctly. If the edges do not meet, the tape needs to be re-glued.
  • Securely fix the workpiece to prevent it from moving or distorting during work. For fixation, use a vice or clamps.
  • The cut (smaller) piece of the workpiece should be left hanging so that it does not pinch the blade or disk.
  • The cut starts from the top.
  • The grinder disk (or hacksaw blade) is guided exactly along the edge of the masking tape, without deviating to the side.

This will allow you to cut exactly the required length.

If the diameter is large, then the markings are done in the same way, but cut in parts, in sectors of 30-60°. After cutting the next sector, the fastenings are loosened and the pipe is rotated. Then they fix it again and continue cutting from the place where the previous sector ended. To make it smooth, special attention should be paid to the beginning of the cut, avoiding steps and nicks.

Oblique incision at 45°

It is possible to cut the end of the pipe exactly at 45° without the use of complex devices. All you have to do is use your plumbing skills. You will need to do the following:

  • Cut a piece of paper into a square shape.
  • Fold diagonally. Learn the right isosceles triangle.
  • Wrap the workpiece with a sheet so that the leg of the triangle is perpendicular to the axis, and the hypotenuse forms an upward spiral.
  • Secure the sheet with tape.
  • Fix the workpiece and cut along the oblique edge of the sheet. It will turn out at 45°.

Pipe bevel cutting

There is another popular method. The end of the workpiece is immersed in a container with liquid at the required angle. You need to cut along the border of the wet and dry areas.

If you need to cut not perpendicularly, then it is better to use an old carpentry tool - a miter box.

This is a U-shaped template, in the side walls of which slots have already been made at specified angles. The pipe is placed against the wall of the miter box farthest from the master and pressed there with a hand or a hand clamp. The hand saw blade is inserted into the appropriate grooves and sawed. If necessary, cut at a different angle, you can make additional cuts in the walls of the miter box.

For personal use

To cut iron pipes in the household, the following tools are used:

Manual pipe cutters. Allows you to cut round parts to obtain an even, right angle of cut using the cutting edges of the rollers. There are several varieties of products of this type, consisting of single rollers, as they are also called, in a row, attached to a chain. In everyday life, such devices are found quite rarely and are more suitable for professional work.

Bulgarian. It is a universal tool for cutting all iron parts with different angles; to perform the work, special metal discs are used, which are quickly ground down during use. Therefore, there is an option to accurately cut a curved line with a disk of small diameter.

Rice. pipe cutting tool

Source: https://instanko.ru/elektroinstrument/kak-rovno-otrezat-trubu.html

How to cut a plastic pipe straight along

Quite often, when performing various construction or repair work, it becomes necessary to cut a pipe. This could be plumbing work, laying pipelines or installing heating systems, but in any case it is necessary to know how to cut a pipe evenly. Some features of performing this task will be discussed further.

45 degree cutting

One particular example of such a situation is the need to cut a metal pipe at an angle of 45 degrees. Such cutting of material is often required when laying water pipes or heating systems. In this case, you have to deal with steel pipes.

For these purposes, conventional cylindrical pipes are usually used. If we are talking about the installation of some kind of metal structures, then profile pipes of rectangular or square cross-section are more often used.

The main problem here is that in order for the elements to be connected to coincide, the cut must be as smooth as possible, which means that especially close attention should be paid to marking the material.

In cases where cutting at an angle is required, a simple square sheet of paper can be used as a marking template. It must be folded strictly diagonally, and then wrapped around the pipe with the template.

In this case, it is necessary to carefully ensure that the side of the sheet, which is located closer to the end of the pipe, is perpendicular to its central axis.

Next, using marking material, a series of dotted lines is applied and after the marking is completed along the entire circumference, the template can be removed.

If you have to cut a profile pipe, then it is advisable to make a special template from the same pipe, but with a larger cross-section. In this case, you will only have to use the measuring devices once.

To apply markings you will need to use a protractor or a construction square. After sawing off the template, the pipes to be cut can simply be inserted into it and marked.

This approach will significantly save work time and cutting a profile pipe at 45 degrees will be convenient.

As for what to use when carrying out work, you should choose the most suitable and familiar one. This can be a simple hacksaw for metal, or a grinder with an installed cutting disc.

90 degree cutting

When the need arises to cut at 90 degrees, the situation is even simpler. In the case of cylindrical elements, you can use the same sheet of paper that is used to wrap the pipe as a template. It is important to ensure that the edge of the sheet is smooth and matches the entire circumference. After marking is applied, the element to be cut is fixed and the cut is made.

Source: https://vi-pole.ru/kak-razrezat-plastikovuju-trubu-vdol-rovno.html

Methods for marking and cutting metal pipes

The use of [metal pipes] in the production and installation of metal structures involves the need for cutting across, along and at an angle. And you don’t always have special equipment at hand. We will describe in this article how to cut a pipe evenly using available tools.  

Methods for cutting metal pipes at an angle 

There are several ways to saw off a pipe or cut it into pieces. Of the available tools, a grinder is the best for this task. But the biggest problem remains the need to correctly mark the cutting lines. They can be different, most often you have to maintain either a right angle relative to the axis of the pipe, or 45 degrees. The techniques vary somewhat depending on what products need to be cut:

  • pipes for laying water supply, gas and for heating distribution;
  • profile products for assembling gates, canopies, and other metal structures;
  • large-diameter pipes - as a rule, this is rarely needed at home, where the widest clearance is only in the sewer system;
  • pipes made of steel, cast iron, thin-walled of non-ferrous metals and soft alloys. 

Both problems can be solved quite simply even without the use of a special pipe angle pattern. 

IMPORTANT TO KNOW: Steel water and gas pipe

We cut the pipe at an angle of 90 degrees 

To mark the cut [of water and gas pipes] at a right angle, you can use a sheet of standard A4 paper, wide electrical tape or construction tape. If you wrap a wide enough material around the pipe so that the edges line up exactly when applied, you will get a perfect cutting line. If the tape or tape is firmly stuck to the metal, you can go right along the edge.  

It is important to be able to use the grinder correctly, hold it with a certain force and follow safety rules. The technique described is the simplest; it is also suitable for cutting a large diameter pipe.   

We cut the pipe at an angle of 45 degrees 

Most often this has to be done when installing plumbing and heating and assembling frame structures. You can cut the pipe at 45 degrees with a grinder according to the markings, which are made either with a sheet of paper of the same A4 size, or using a regular school (drawing) isosceles square.  

Use a sheet of paper or cardboard 

You will have to do several operations with the sheet to get the desired angle. If you don't want to get confused with the folds, just make it square and fold it diagonally to get the angle you want. The same can be done with any sheet, as long as its sides are equal to each other. The method is convenient in that it can be applied to both large-diameter pipes and [profile pipes of square and rectangular cross-section].  

IMPORTANT TO KNOW: Profile stainless pipe

Marking with a square 

If you have a square at hand, you must first determine the exact line of the end of the pipe, including the profile one. By applying the tool and smoothly moving it along the surface, we get a cutting line of 45 degrees. The same technique is used with a 30 degree square.  

How to properly cut pipes from different metals 

Accurate cutting and trimming of pipes depends not only on well-executed markings. The material is also of great importance - metal of different thicknesses and hardness is cut with different forces and side effects. To properly cut a cast iron pipe, it should not be sawed all the way through. Cast iron is a brittle metal, so several cuts are usually made, and then a specialist knocks a piece out of them with one precise blow of a chisel.  

To work with thin-walled pipes, you will have to very accurately check the position of the grinder. At the same time, the master must choose the right [discs for cutting metal with a grinder]. In industrial settings, special pipe cutters, gas cutting machines and welding machines can be used to perform the same tasks.  

IMPORTANT TO KNOW: Seamless cold-formed pipes

Safety when cutting a gas pipe 

When working with gas pipes connected to the mains, it is important to follow safety precautions. First turn off the gas supply valve, then make sure that there is nothing in the pipe. To do this, just open the stove burners and light the gas - when it runs out, the flame goes out.  

Source: https://rezhemmetall.ru/sposoby-razmetki-i-rezki-metallicheskix-trub.html

How to cut a pipe evenly - tools and cutting methods

:

What tools are used to cut pipes?

Tools for home and semi-professional use

Industrial equipment

Pipe cutting technique

Straight cut

Miter cutting

In everyday life, we are constantly faced with the need to lay pipelines from various materials, be it water supply, sewerage, heating, installation of cable ducts, or even the construction of frame structures in a house or country house.

This article will tell you how to evenly cut a pipe for certain purposes, if you do all the work yourself, that is, it provides detailed instructions for all technological operations.

In addition, let's talk about the variety of tools for amateur or industrial use.

What tools are used to cut pipes?

At first glance, it may seem that cutting pipes is a fairly simple process that is not worth special mention. However, this is not quite true.

It’s one thing when you don’t need precise, even cuts at an angle of 90º or any other, since no further welding or joining of the ends will be performed. And it’s a completely different matter when you need to make an absolutely precise cut.

Note that if it is necessary to cut oblique ends with an exact angle, it is worth consulting with experienced craftsmen.

Separately, it is worth mentioning pipes with a large diameter, when joining which a cut of exactly 90º must be ensured. Be that as it may, all these operations are performed using special equipment.

Tools for home and semi-professional use

To install water supply or sewerage systems, heating and ventilation circuits in home construction or when providing construction services, tools from this category are often used.

Among the most common devices are:

  1. Cutters with pruner design . This tool is used for cutting polymer pipes whose cross-section does not exceed 75 mm. The gear mechanism of the device allows you to apply the force necessary for work. The design of such a cutter includes a special shelf on which the pipe is laid, which ensures an even cut at exactly 90º. Prices for such tools can be very different, it all depends on their quality, dimensions, capabilities, manufacturer and other factors.
  2. Disc type pipe cutter

Source: https://trubaspec.com/montazh-i-remont/kak-rovno-otrezat-trubu-instrumenty-i-sposoby-otrezaniya.html

Source: https://HouseChief.ru/kak-rovno-otrezat-trubu-bolgarkoj.html

How to cut a pipe evenly with a grinder

How to cut a pipe evenly with a grinder

In households, profile pipes are widely used in the manufacture of greenhouses, greenhouses, canopies to protect vehicles from precipitation and other structures. When working with this material, it is useful to know how to cut a profile pipe along a line or crosswise with the most accurate angle.

Among the large number of construction metal cutting tools, the leader in speed, ease of cutting and efficiency is the angle grinder (grinder), which is often present in the tool kit of any home craftsman. To cut a profile steel pipe using a grinder, you will need a regular metal disc and strict adherence to safety rules - breaking the disc into segments at high rotation speeds can lead to serious injuries.

Fig.1 Profile pipes in the household

How to cut a profile pipe straight across

How to cut a profile pipe straight across

Most often in households, a rectangular or square pipe metal profile with a wall thickness of no more than 3 mm is used, and cutting into separate sections is necessary when carrying out work on assembling welded frames.

To cut a pipe correctly, additional devices are used to mark and mark the cutting line; some of the devices serve as a support edge for the cutting disk.

The nuances of working with a rectangular section

The nuances of working with a rectangular section

Rectangular workpieces are much easier to cut lengthwise and crosswise at any angles than cylindrical elements, which are difficult to hold stationary on a flat surface.

Transverse cutting of workpieces at any angle does not present any particular difficulties - the line of the required angular slope is drawn on the side edge and always coincides with the calculated one (round elements require the use of special patterns, calculated on a computer, to align their edges at an angle other than a straight line).

The thickness of the walls of a metal profile when used in households rarely exceeds 5 mm - it is easy to cut using an angle grinder with any metal disc.

Rice. 2 Types of transverse marking methods

What tool is used

What tool is used

As noted above, the main tool for cutting metal parts at home is an angle grinder; if you don’t have one, you can use a hand-held hacksaw or a jigsaw, which can also cut metal materials with a special diamond-coated blade.

For cutting with a grinder, cut-off electrocorundum discs are used, which are not intended for grinding operations. As an auxiliary tool, a tape measure, a metal ruler, various types of clamps, pencils and markers for marking will be useful.

Paper pattern for pipe

Paper pattern for pipe

Using a paper sheet is a simple method of marking a rectangular or square profile for precise cutting at an angle of 90 or 45 degrees towards its axis.

To make markings for cross cutting at an angle of 90 degrees, take a sheet of paper and wrap it around the pipe until the edges line up exactly, after which they are glued together. With this method, the cutting line is very clearly visible, unlike drawing it with a pencil or marker along the edge of the template.

After this, the profile is cut along the template edge alternately from all sides, trying to avoid complete cutting of the finishing sections - this can lead to the disk hitting sharp corners and its destruction.

A sheet of paper can also be used to mark the side walls of rectangular or square pipes.

To do this, the paper sheet is folded diagonally, and the resulting 45-degree angle is applied to the side walls and the appropriate markings are made.

To ensure that the side lines are at the same level, an acute angle is applied to the transverse line placed at an angle of 90 degrees to the axis, which is previously applied in the above manner.

Rice. 3 Using a steel template

Miter box for cutting pipes

Miter box for cutting pipes

It is very convenient to cut a profile pipe using a special template, which is an analogue of a construction miter box for cutting building materials at different angles.

To do this, using the above or another method, a metal template is made from a piece of profile pipe cut along the length; it can be designed to obtain a right angle or an angle of 45 degrees.

To cut a metal profile, apply a template to it and draw a line with a scriber, along which a cut is then made. In other cases, the template is held and a grinder is used to draw a line along the surface of the workpiece, trying to avoid strong pressing of the side surface of the disk against the attached metal template. Then the template is removed and cutting continues along a clearly visible depression on the edges of the workpiece.

Using a template, you can get a very straight cut line if you do not hold it manually, but secure it to the workpiece using clamps or mounting bolts.

To make your own fasteners, drill a hole in the side surface of the U-shaped plate of the template and weld a union nut at this point from the outside into which the bolt is screwed.

To secure the template, place it on the part to be cut and screw in the bolt, pressing the template surface against the workpiece, then use a grinder with a metal disc to make a cut, lightly touching the guide edge.

Rice. 4 How to cut a workpiece with a homemade machine

Other options

Other options

A good option for making a template is to use a short piece of larger diameter pipe for marking, the guide edge of which has been pre-cut at the desired angles.

When marking, the part is placed on the pipe to be cut, after which its surface is marked with a marker or scriber.

The second method is to rigidly fix the template on the workpiece using wedges or clamps, followed by cutting with a metal disc with light pressure on the side surface of the template part.

In order not to cut metal pipes or sheets of iron by eye, some home craftsmen use homemade fastening devices for the grinder, rigidly securing it to a vertically mounted spindle.

When moving the tool from top to bottom, a stable, even cut occurs on the part located under the disk; if metal guides are fastened to the machine bed, then when a workpiece is applied to them, any desired cutting angle can be obtained.

Fig.5 Working with thick-walled steel

Cutting large diameter profile pipe

Cutting large diameter profile pipe

A large-diameter metal profile has thick walls and a lot of weight; if for cutting thin-walled parts (wall thickness up to 2 mm) it was possible to use thin disks of about 1 mm in size, then for cutting thick-walled metal they take 2 mm.

disc circles.

Accordingly, it is more convenient to cut thick walls with a large-diameter disk using a powerful large-sized construction angle grinder - household devices do not have enough power to quickly carry out work, and their small disks quickly wear down.

When performing work, they are guided by the following rules:

  1. When cutting heavy pipes, they should be placed on a flat surface or low supports in such a way that when cutting the last section, it does not change its position or falls down, preventing the cutting tool from being compressed by its walls.
  2. If the surface is flat, each face is cut completely, turning the part over; if the support is uneven, the last jumpers are not cut a little, allowing the workpiece to separate under its own weight, after which the protruding area is sanded.
  3. When working with a grinder to cut heavy metal elements, it is necessary to use a protective casing - the likelihood of the disc delaminating into individual elements is too high.

Many people work with the wrong direction of rotation towards themselves - this leads to the fact that the sharp edge of the metal is constantly raised, the tool is more difficult to hold in a fixed position, and the cutting disc wears off faster. In addition, the reverse direction of rotation of the cutting wheel is dangerous from a safety point of view.

  How to assemble a siphon for a kitchen sink

How to cut a profile pipe lengthwise - cutting technology

How to cut a profile pipe lengthwise - cutting technology

If cross-cutting a profile does not cause any particular difficulties, then a longitudinal cut, which is necessary for some work in the household, is more complex due to its length.

One of the problems when carrying out this is the accuracy of the markings; to apply it in the center or at another point of the cut edge, marks are placed along the entire length at the same distance from the side wall and then they are connected with a pencil, marker or scriber, using an even corner, construction paper, as a guide. usually a level, a profile from drywall.

Rice. 6 Cutting a pipe lengthwise along a guide angle

In order to cut a metal profile in the longitudinal direction, they drive the angle grinder along the line, gradually cutting a through hole - the method is not very accurate, the tool has to be held suspended without support.

A more convenient way to qualitatively cut a workpiece longitudinally is to use auxiliary supports in the form of a metal corner or even straight plates. To do this, the corner is attached to the surface of the workpiece using clamps and the grinder is guided along its side edge; if the length of the template corner is small, it is unscrewed and moved further to a new place, after which cutting is resumed.

Rice. 7 Securing the angle grinder for longitudinal cutting

To obtain the specified sizes and configurations of profile pipes in the household, cutting is used using an angle grinder and inexpensive cutting corundum discs. To get an even and accurate cutting line, it is better to use support guides or homemade steel templates that set the desired angle.

Source: https://evroterm32.com/kak-rovno-obrezat-trubu-bolgarkoy/

How to saw off a profile pipe smoothly with a grinder

How to saw off a profile pipe smoothly with a grinder

Quite often, when performing various construction or repair work, it becomes necessary to cut a pipe. This could be plumbing work, laying pipelines or installing heating systems, but in any case it is necessary to know how to cut a pipe evenly. Some features of performing this task will be discussed further.

45 degree cutting

45 degree cutting

One particular example of such a situation is the need to cut a metal pipe at an angle of 45 degrees. Such cutting of material is often required when laying water pipes or heating systems. In this case, you have to deal with steel pipes.

For these purposes, conventional cylindrical pipes are usually used. If we are talking about the installation of some kind of metal structures, then profile pipes of rectangular or square cross-section are more often used.

The main problem here is that in order for the elements to be connected to coincide, the cut must be as smooth as possible, which means that especially close attention should be paid to marking the material.

In cases where cutting at an angle is required, a simple square sheet of paper can be used as a marking template. It must be folded strictly diagonally, and then wrapped around the pipe with the template.

In this case, it is necessary to carefully ensure that the side of the sheet, which is located closer to the end of the pipe, is perpendicular to its central axis.

Next, using marking material, a series of dotted lines is applied and after the marking is completed along the entire circumference, the template can be removed.

If you have to cut a profile pipe, then it is advisable to make a special template from the same pipe, but with a larger cross-section. In this case, you will only have to use the measuring devices once.

To apply markings you will need to use a protractor or a construction square. After sawing off the template, the pipes to be cut can simply be inserted into it and marked.

This approach will significantly save work time and cutting a profile pipe at 45 degrees will be convenient.

As for what to use when carrying out work, you should choose the most suitable and familiar one. This can be a simple hacksaw for metal, or a grinder with an installed cutting disc.

90 degree cutting

90 degree cutting

When the need arises to cut at 90 degrees, the situation is even simpler. In the case of cylindrical elements, you can use the same sheet of paper that is used to wrap the pipe as a template. It is important to ensure that the edge of the sheet is smooth and matches the entire circumference. After marking is applied, the element to be cut is fixed and the cut is made.

Source: https://moy-instrument.ru/instrumenty/kak-rovno-otpilit-profilnuyu-trubu-bolgarkoj.html

How to mark a pipe straight along

How to mark a pipe straight along

Pipes are a widely used building material. They are used in the installation of various systems. A common occurrence during the installation process is when pipes need to be joined at an angle. However, the technology for producing such work does not seem quite common.

To create this connection configuration, the pipes must be cut at an angle. Let's look at how such operations are performed and what cutting methods exist.

Techniques for cutting pipes at an angle

Techniques for cutting pipes at an angle

When considering work methods—cutting straight or at an angle—one should take into account the different materials of the products being processed. Thus, hoses made of polypropylene or thin copper are easier and easier to cut than thick-walled steel pipes.

Plastic products of small diameters are cut at the desired angle using special scissors. In this case, you can control the angle with a regular protractor.

It is necessary to cut pipes very often when working with these installation elements. A popular tool for such cases is the so-called grinder. This tool can be used to cut straight and at an angle.

The most common installation need is cutting water or other pipes at an angle of 45º. Let's find out what devices can be used for cutting at this and other angles.

Paper pattern for pipe

Paper pattern for pipe

To perform a relatively accurate cut, you can use a simple technique, where an ordinary sheet of paper acts as a kind of pattern. For example, A4 printer paper is well suited for creating patterns. The sheet is first marked into a square using a ruler. The diagonal size of the square should be equal to the circumference of the pipe that needs to be cut. Excess parts of the sheet are cut off.

The simplest way to obtain a marking line on a pipe for making a cut at an angle of 45 degrees. A regular sheet of paper is used, which is placed on the pipe body in the cutting area

Next are the following steps:

  1. Bend the sheet diagonally, aligning opposite corners.
  2. Rotate the resulting triangle so that the hypotenuse line is perpendicular to the axis of the pipe.
  3. In this position, wrap the tube surface with paper, aligning the extreme points of the hypotenuse together.
  4. Use a marker to mark the cut along the line of any of the legs of the triangle.
  5. Cut the pipe along the marked line.

This method is quite convenient for marking and cutting pipes at an angle of 45º in the diameter range from 32 to 63 mm. For greater ease of marking, it is recommended to use thick but soft paper. You can also use paronite and similar materials.

Programs for calculating cutting angles

Programs for calculating cutting angles

Pattern cutting technology allows you to obtain different cutting angles. But to form a pattern at angles other than 45º, you will need to perform mathematical calculations and cut out a template from paper or similar materials based on the calculated data. True, there are computer programs designed to save the master from making calculations. Patterns for cutting pipes are printed by such programs on a printer.

This is what the window of a computer program looks like when calculating the cutting angle for a circular section. Based on the calculation results, a pattern is drawn that can be printed.

A template is cut out according to the pattern

A simple calculation program created on the basis of the MS Excel application allows you to calculate and draw up a pattern for almost any pipe diameter and required cutting angle.

All the user needs to do is enter the appropriate values ​​in the “Outer diameter” and “Cut angle” cells. Using these parameters, a pattern will be generated that can be sent for printing.

An example of a pattern obtained by calculation in the popular Excel program. The calculation of the curve passage points is carried out on the basis of only two specified parameters - the pipe diameter and the required cut angle

The disadvantage of the program is that it does not take into account the thickness of the pattern sheet, which leads to minor inaccuracies.

Miter box for cutting pipes

Miter box for cutting pipes

There is a simple tool that is often used in everyday life, mainly for working with wood. It's called a miter box. So, this same device is suitable for cutting pipes, and at different angles. The miter box is commercially available, but if you wish, you can always make it yourself and adjust the structure to the desired pipe diameter:

  1. Take a wooden board with a width equal to the diameter of the pipe and a length of 400-500 mm.
  2. Take two more boards of the same dimensions, but increased in width by the thickness of the first board.
  3. From three boards, assemble a structure in the form of an inverted letter “P”, where the first board is installed as the base.
  4. In the central part of the structure, mark a rectangle, two sides of which run along the inner boundaries of the side boards.
  5. Divide the rectangle with diagonals and, along the lines obtained on the upper edges of the side boards, make cuts down to the base.

  Laying depth of sewer pipes in a private house

In this way, a template is made for cutting at an angle of 45º. But with the help of a protractor you can mark almost any angle and make cuts to cut the pipe for a specific angle. The advantage of a miter box is that the tool is suitable for repeated use. Working with the tool is permissible until the walls of the slots are worn to such a degree that they can provide high cutting accuracy. It is recommended to make the walls of the instrument from a material of higher strength than wood.

This is what a possible design of a miter box looks like - a device that can also help cut pipes at different angles.

However, a miter box is, as a rule, convenient to use for cutting pipes of small diameters and with small wall thickness

The advantages of the method are obvious - simplicity, ease of making a tool (miter box), efficiency, versatility.

The disadvantages of working with this type of equipment are the need to adjust the dimensions of the miter box to the pipe diameter, provided that an accurate cut is performed. That is, for each pipe you will have to make your own tool.

Also, using a miter box, you can only cut a pipe with a hacksaw or pruning shears (for plastic products). This tool is not suitable for working with thick-walled metal pipes for cutting with a grinder.

Simple cutting equipment

Simple cutting equipment

Metal products of round and rectangular shapes with fairly thick walls can be conveniently cut at an angle using simple electromechanical equipment. The cutting element of such a tool is a cutting disc or circular saw mounted on the electric motor shaft. In turn, the electric motor with the cutter is part of the entire equipment, which includes a work table, a pendulum support, and a clamp.

An electromechanical device for cutting pipe elements, including at different angles. A disc cutter and a simple mechanical system for fastening the pipe in different positions are used.

To install the pipe at the desired angle and then fasten it, a regular clamp and two metal corners are used. One corner (short) is attached to the base of the rotating mechanism - the pendulum. The second corner (long) is in a free state.

Pipe laying and cutting procedure:

  1. The rotating mechanism sets the required cutting angle (for example, using a ruler and a protractor).
  2. The found position is fixed with clamping screws.
  3. A pipe is placed between the short and long corners and pressed with a clamp screw.
  4. Voltage is supplied to the electric motor.
  5. By applying a slight pressure force to the cutter disk, the pipe is cut in the right place.

The advantages of this technique are fast work, accurate cutting, and the ability to process a large number of pipes in a short period of time. Disadvantages: restrictions for use in domestic conditions, increased noise, work with pipes of only small and medium diameters. In addition, the cutting process with equipment is performed stationary at a distance from the installation site, which is not always acceptable.

The nuances of working with a rectangular section

The nuances of working with a rectangular section

To cut rectangular products, it is recommended to prepare template corner cuts in advance. They can be easily made from a metal corner, having previously been marked with the same protractor.

Cutting rectangular pipes (profile elements) at the desired angles is usually performed using templates. Such templates are made from metal corners of different sizes.

Marking can be done at different angles. To use a template, just attach it to the rectangular pipe in the right place and mark the cutting line. Then use any suitable tool to make a cut along the intended line.

Precision cutting devices

Precision cutting devices

Among branded devices that could be used in everyday life to make cuts at an angle, you can pay attention to Italian-made equipment. The Mini Cut band saw from the MASS company is a small-sized device with manual clamping, for working not only with pipes, but also with angles, rods, and profile elements.

A convenient and productive device for cutting pipes of small and medium diameters. The cutter is made on the basis of a steel strip, which can be installed to make cuts at an angle

The machine supports setting the cutting angle from 0 to 45º.

The procedure is carried out using a tape at a speed of 45 reciprocating movements per minute. The device is equipped with a 370 W electric motor, which is powered from a household network.

The maximum permissible diameter of a round pipe to be cut is 65 mm.

Industrial models (using the example of BSM)

Industrial models (using the example of BSM)

There are special machines for industrial use to perform precise miter cutting operations. A good example: devices produced under the BSM brand. The machine manufacturer is the German company Rexinger. True, the BSM series machines are designed exclusively for working with polypropylene pipes of fairly large diameters. Processing of products such as PP, PVC, PE, PVDF is supported.

Industrial machine for cutting pipe products made of polymers. Designed to work with large diameter products, but has equipment for processing pipes from 50 mm.

The machine provides cutting in a wide range of angles

The cutting tool of the machine is a band saw, thanks to which cuts are made at angles from 0 to 67.5º. The accuracy of the process is ensured by a laser cutting recognizer.

Despite the configuration of the device for large-diameter products, you can use a special table, which can also be used to successfully cut pipes of small diameters (50 - 200 mm). A wide range of BSM devices is produced.

  Adapters for PVC sewer pipes

Application of thermal methods

Application of thermal methods

In addition to mechanical methods, thermal methods are often used, where welding or cutting machines are used as tools. For example, an autogenous gas cutter or a conventional welding machine (DC/AC). With the help of such machines, thick-walled metal pipes can be cut. However, it is extremely difficult to obtain a perfectly even, high-quality cut using electric welding or gas autogen.

Cutting technology using electric welding and autogen is widespread everywhere. The technique does not provide high cutting accuracy, but when installing pipes this factor is often not decisive

Typically, after thermal cutting, products undergo additional processing.

The cut line is aligned and the required angle values ​​are adjusted. This approach is economically unprofitable, as it is accompanied by additional costs for mechanical processing. As a rule, thermal cutting techniques are used in industrial production conditions.

True, housing and communal services also often resort to this technique.

Thermal cutting is also used to work with plastic materials. There are devices - thermal guillotines. The sharp thin blade of such devices is heated to a high temperature, after which the cut is performed.

Thermal guillotines support cutting at an angle, and this is their advantage. However, these devices cannot be used to work with materials that are more rigid than polyvinyl chloride, wood, or chipboards.

Conclusions and useful video on the topic

Did you like the article? Share with friends:
Metals and their processing
-- Sideb lion (lipk) -->
For any suggestions regarding the site: [email protected]
Для любых предложений по сайту: [email protected]