How to calculate the weight of a metal pipe

Profile pipe weight: tables and pipe calculator

Construction science is a complex relationship between physics and mathematics; it cannot be done without certain knowledge and the ability to calculate various values. For example, to properly organize transportation, it is important to know in advance the weight of the profile pipe, and not just its dimensions and dimensions, otherwise you may simply choose a vehicle for transportation or not fit all the pipes into one vehicle.

Let's figure out how to calculate the specific gravity of a certain type of pipe, what types of pipes there are, and the best way to transport them.

Types and sizes of pipes

Profile pipes are very popular today and are used in various construction activities, from laying paving slabs to welding work. In this regard, there are several types of metal profile pipes on the market:

1. Rectangular;
2. Square;
3. Oval;
4. Flat oval;
5. Hexagonal;
6. Triangular.

The most popular types of profiles are rectangular, square and oval pipes.

There is also a wide range of standard sizes of profile pipes. Standard professional pipes have a diameter from 15 to 300 millimeters, a wall thickness from 1 to 12 millimeters, but the weight is determined using a special mold - it directly depends on the shape of the pipe and what dimensions it has.

Marking, symbols and GOST

Depending on the size and type, steel pipes have different markings, which are prescribed in the state standards of the Russian Federation:

• GOST 8639 82 – square steel profile pipe;
• GOST 8645 82 – rectangular;
• GOST 10704 91 – straight-seam electric welded;
• GOST 8642 68 – oval.

These are the main 4 types that are most popular in the construction industry.

Tables of weight of steel pipes of various GOST and TU 1 meter

In order to calculate the specific gravity of a profile, a special table of the weight of a profile pipe is used, with which you can calculate the mass of a certain type of pipe by multiplying the length by the weight of a linear meter.

Using special tables, you can determine how many meters are in a ton of pipeline.

The characteristics of the best manufacturers and the standard sizes of their products are given in the tables below.

GOST 8639 82 – Square steel pipes

Section square parameters	Weight of 1 linear meter
15×15x1.0	0,479
15×15x1.2	0,501
15×15x1.5	0,605
20×20x1.2	0,689
20×20x1.5	0,841
20×20x2	1,08
25×25x1.2	0,877
25×25x1.5	1,07
25×25x2	1,39
30×30x1.5	1,31
30×30x2	1,70
40×40x1.5	1,78
40×40x2	2,33
40×40x2.5	2,85
40×40x3	3,36
40×40x4	4,30
50×50x2.5	3,64
50×50x3	4,31
50×50x3.5	4,94
50×50x4	5,56
60×60x2	3,59
60×60x2.5	4,43
60×60x3	5,25
60×60x3.5	6,04
60×60x4	6,82
80×80x3	7,13
80×80x4	9,33
80×80x5	11,44
80×80x6	13,46
100×100x3	9,02
100×100x4	11,84
100×100x5	14,58
100×100x6	17,22
100×100x7	17,3
100×100x8	22,25
120×120x4	14,35
120×120x5	17,72
120×120x6	20,99
120×120x8	27,27
140×140x5	20,86
140×140x6	24,76
150×150x5	22,43
150×150x6	26,64
150×150x8	34,81
160×160x4	19,38
160×160x5	24,00
160×160x6	28,53
160×160x8	37,32
180×180x5	27,14
180×180x6	32,30
180×180x8	42,34
180×180x10	52,03
200×200x6	36,06
200×200x8	47,37
200×200x10	58,31
200×200x12	68,89
250×250x6	45,48
250×250x8	59,93
250×250x10	74,01
250×250x12	87,73
300×300x6	54,90
300×300x8	72,49
300×300x10	89,71
300×300x12	106,6

GOST 8645 82 – Rectangular steel pipes

Options	Weight of 1 linear meter
20x10x1.2	0,501
20x10x1.5	0,605
25x10x1.5	0,723
28x25x1.2	0,934
28x25x1.5	1,15
28x25x2	1,48
30x15x1.5	0,959
30x20x1.5	1,08
30x20x2	1,39
40x20x1.5	1,31
40x20x2	1,70
40x25x1.5	1,43
40x25x2	1,86
40x25x2.5	2,27
50x25x1.5	1,67
50x20x2	2,02
50x25x2	2,17
50x30x2	2,32
50x30x2.5	2,86
50x40x2.0	2,65
50x40x2.5	3,25
50x40x3.5	4,39
60x30x2	2,65
60x30x2.5	3,25
60x30x3	3,83
60x40x2	2,96
60x40x3	4,30
60x40x3.5	4,94
60x40x4	5,56
80x40x2	3,59
80x40x2.5	4,43
80x40x3	5,25
80x40x4	6,82
80x60x3	6,19
80x60x4	8,07
100x50x3	6,66
100x50x4	8,70
100x50x5	10,65
100x60x3	7,13
100x60x4	9,33
100x60x5	11,44
100x80x4	10,59
100x80x5	13,01
120x60x3	8,07
120x60x4	10,59
120x60x5	13,00
120x80x4	11,84
120x80x5	13,01
120x80x6	17,22
140x60x4	11,84
140x60x5	14,58
140x100x4	14,35
140x100x5	17,72
140x100x6	20,99
150x100x5	18,50
150x100x6	21,93
150x100x8	28,53
160x80x5	17,72
160x120x5	20,86
160x120x6	24,76
180x100x6	24,76
180x100x8	32,29
200x120x5	24,00
200x120x6	28,53
200x160x5	27,14
200x160x6	32,30
230x160x8	46,11

Of course, for convenience, when purchasing a pipe, it can be cut into several parts, so take into account that the length can be from 3 to 12 meters, depending on the client’s wishes. There are also special sizes that differ from the standard ones; if necessary, they can be ordered on an individual basis. And now you can figure out how the weight of a linear meter of a profile pipe is calculated.

Pipe weight calculator

The formula for calculating the specific gravity of a profile is quite difficult to master; it takes into account the following indicators:

1. Material density;
2. The width and height of the profile section or its diameter;
3. Wall thickness;
4. Pipe length;

If you use stainless steel pipes, you can use the tables above for calculations, simply multiplying the pipe length in meters by the specific gravity of 1 linear meter, which is indicated in the table opposite the profile size.

If you decide to purchase a galvanized profile, aluminum profile or copper profile pipes, you can calculate the specific gravity using a special calculator. In it you can select materials, for example stainless steel, enter dimensions and calculate the weight of the pipe, whether it is thick-walled or thin-walled, you can also read the values ​​from the reference book. Here you can calculate the density of the material.

Rolled metal calculator metcalc.ru

Unfortunately, this calculator cannot calculate how much plastic pipes weigh; it can only indicate various metal materials and calculate their theoretical weight.

Limit deviations and tolerances

The maximum possible deviations in height and width may be as follows:

• With a profile height of up to 10 centimeters +/-1;
• If the profile height is more than 10 centimeters +/-0.8.

The cross section of the profile product may deviate from the right angle by no more than 1 degree.

What is the best way to transport corrugated pipe from the metal depot to your site?

Having found out the weight and size of a square pipe, you will have to think about how to transport a profile of this size. Of course, everything depends on the total number and dimensions of pipes.

Different modes of transport can accommodate different profiles. Let's figure out how you can transport pipes of one size or another.

8-12 meters

To transport profile pipes of this size, you will need a long vehicle with a total side length of 13.5 m. This range is the heaviest and at the same time the most capacious cargo carrier. The entry of such transport into many cities is prohibited, so the transportation route should be thought out in advance, and if possible, hire another transport and purchase a profile of shorter length.

6 meters (the most common option)

Most often, metal warehouses offer profile pipes 6 meters long; they are easier to transport, they have less weight, and most importantly, they meet the needs of most clients. If you need to transport 1-4 such profiles, then you can use an ordinary gazelle as a carrier - expensive and angry, not every driver will agree to such an undertaking, because the installation of the cargo will be “with a twist.”

You can hire a Chinese light truck - their body is elongated and is up to 5 meters long.

If there are more than 4 profile pipes, then it is better to hire a Kamaz or a truck - they will deliver the cargo safely and securely, and most importantly, there will be no problems on the way to the site.

3 meters

A three-meter profile can be taken away in almost any car, but according to the Administrative Code, it is best, of course, to carry out this procedure using a gazelle. You can fit several dozen products of this length in it.

In any case, it is better not to take risks and hire a car with a body longer than the dimensions of the profile products that you decide to transport, this way you will protect the driver from fines, and yourself from unnecessary hassle when delivering building materials.

(3 5,00 out of 5)

Source: https://vseotrube.ru/materialy/metallicheskie/ves-profilnoj-truby

Steel pipe weight – Prof Pipes

Seamless steel pipe is manufactured using several methods, namely: rolling, drawing, forging and pressing. This type of pipe has a one-piece design and does not have joining seams along its entire length.

There are two types of seamless pipes : hot-rolled (hot-deformed) GOST 8732-78 , manufactured from billets or ingots at high temperatures, using one of four methods (given above) and cold-rolled (cold-deformed) GOST 8734-78 , their manufacturing method differs from hot-rolled by lower temperatures. In cold-rolled production, the finished product has higher quality and precision of the material.

The use of this pipe can be different from mechanical engineering to public utilities. Most often, the seamless type of pipe, due to its strength characteristics, is used where high reliability and durability are required (gas, oil pipelines). This type of pipe is economically beneficial, as it has an affordable price on the world market.

Seamless pipes are produced in measured, unmeasured and multiple lengths; their length can range from 4 to 12 meters, in some cases these dimensions are neglected.

Depending on the wall thickness, seamless pipes are divided into thin-walled and thick-walled. They are expressed as the ratio of the outer diameter of the pipe to the thickness of its wall. If this coefficient lies in the range from 6 to 12.5, then such a pipe is considered thick-walled, and if from 12.5 to 40, then it is considered thin-walled.

It happens that this coefficient is less than 6; such a pipe is called “extra thick-walled”.

How to determine the weight of steel pipes: determination according to GOST, tables and calculation using formulas

Any metal rolling technology has one of the main characteristics such as specific gravity. For a steel pipe one meter long, the mass can be calculated regardless of the type of cross section using the appropriate calculation formulas or tables.

What is the specific gravity of the pipe?

An indicator such as the specific gravity of a steel pipe has a numerical value of the weight of one linear meter of this product. This indicator is very convenient because, regardless of the volume of steel products, it makes it possible to quickly calculate its total mass. To do this, you simply need to measure or know in meters the length of the total number of the proposed or existing batch of pipes. Data on the sizes of steel pipes will also be needed:

• side lengths - for profile pipes (rectangular, square);
• outer diameter for round pipe products;
• steel grade (for more accurate calculations);
• product wall thickness.

This information can be found in the accompanying documents for rolled metal or measured with your own hands. Each pipe size has its own specific specific gravity. This value can be determined in one of the possible ways and after multiplying by the total length of the rolled pipe, the required total weight of the pipe (one or the total amount of this metal product) is obtained.

Why do you need to know specific gravity?

The total weight of steel pipes is important and necessary quantitative information in any area where this product is used.

At a plant that produces pipes, it is necessary to know how much raw material is needed to fulfill an order to produce a batch of a certain product. In this case, it is impossible to do without information about the total weight of the delivery of the finished pipeline to the consumer.

Financial reporting, accounting, road transport, warehouse and other documents reflect the movement and accounting of metal products in kilograms and tons.

You need to know the weight of the rolled pipe in order to choose the option of transporting it to your destination and select the necessary type of transport. This indicator is used during purchase and sale, as well as during financial settlements for pipe products.

The weight of steel pipes is an integral indicator of calculations of strength, reliability, and weight of manufactured metal structures and is included in the relevant technical documentation.

And in any case it can be quickly determined by knowing the general dimensional data and the length of the rolled product used, using the corresponding specific gravity of one linear meter of pipe.

Methods for calculating specific gravity

The weight of any pipe will depend on the specific density of the composition from which the pipe is made and its geometric parameters:

• length;
• height, width or diameter;
• wall thickness.

Therefore, it is indicated as a mass of volume (in sq. m.) of a profile or cylindrical shape, filled with homogeneous steel with the required density (in kg/m. cu.). The length of the pipe when determining its specific gravity is one meter. For rolled steel pipes, in any calculations, the density of the composition from which it is made is always taken as 7850 kg/m. cube To determine the weight of one meter of steel pipe (specific gravity), choose one of the following methods:

• according to calculation formulas;
• using tables where the required data is indicated for standard sizes of rolled pipes.

In any case, the data obtained are only theoretical calculations. This is due to the following reasons:

• when making calculations, it is often necessary to round the calculated values;
• in the calculations, the shape of the pipe is assumed to be geometrically correct, that is, metal deposits at the welding joint, roundings in the corners (for rolled profiles), reduction or excess of dimensions relative to standard ones within the permissible limits of GOST are not taken into account;
• The density of different steel grades differs from 7850 kg/m. cube and for many alloys the difference is quite significant when determining the weight of a large number of pipe products.

With the help of special tables, the maximum approximate theoretical indicator of the specific gravity of pipe products is determined , since in their compilation complex mathematical formulas were used that took into account the production technology and geometry of the products as much as possible. To use this calculation option, first, using the available data on the pipe, its type is determined. Then they find in the reference literature a table corresponding to this rolled metal product or GOST for this assortment.

So, for example, for square steel profiled pipes you need to use GOST 8639-82, and for round straight-seam pipes - GOST 10704-91. The next step in determining the specific gravity: using the available indicators on the size of the pipe, find the required value in the table. In the case when the measured product dimensions or wall thickness do not correspond to some table value, then the specific gravity indicator is selected for the standard dimensions that are closest in value.

The good thing about the tabular version of the calculation is that it does not require any calculations , which eliminates the possibility of making a mathematical error when making calculations. But this method requires the availability of special literature. The most universal option is to use mathematical formulas. This method can be used in any conditions, even, so to speak, “in the field,” far from the opportunities and benefits of civilization.

Determining the specific gravity of a pipe using formulas

As mentioned above, the calculation is based on determining the volume of raw materials consumed to produce one meter of rolled pipe. Then this value must be multiplied by the density of the composition (in the case of steel by 7850 kg/m3). The required volume is determined in this way:

• Calculate the volume of a part of a pipe one meter long based on its external dimensions. Why determine the cross-sectional area of ​​the pipe, which is multiplied by the length, in our case by 1 meter.
• Calculate the volume of the hollow part of a pipe 1 meter long. Why do we first determine the dimensions of the cavity (for a round product, the internal diameter is calculated by subtracting double the wall thickness from the external diameter, and for profile pipes, the height and width of the internal diameter are determined by subtracting double the thickness from the external dimensions). Afterwards, based on the results obtained, a calculation similar to that indicated in the first paragraph is made.
• At the end, the second result is subtracted from the first result, this is the volume of the pipe.

All calculations are made only after converting the initial indicators into kilograms and meters. The volume of round and cylindrical pipe sections is determined using the following formula:

V = RxRx3.14xL, where:

• V – volume;
• R – radius;
• L – length.

Another simple formula, but for round steel pipes:

Weight =3.14x(D – T)xTxLxP, where:

• D – outer diameter;
• T – wall thickness;
• L – length;
• P – steel density.

There are two more formulas, but for steel profile pipes. The original data must be converted into millimeters , the answer will be in kilograms. Formula – for a square pipe:

Specific gravity = (A–T)xTx0.0316

For rectangular pipes:

Specific gravity = (A+B–2xT)xTx0.0158

That is, to determine the exact weight of the material, you can use special tables , which indicate the weight of the pipes, taking into account the cross-section, diameter and other indicators. If you don’t have this table at hand, you can always use a special calculator, where to calculate the required values ​​you only need to enter the necessary data, such as wall thickness and type of section of the structure. Everyone chooses how to determine specific gravity.

Source: https://stanok.guru/stal/kak-uznat-ves-stalnyh-trub-tablica-i-raschet-po-formulam.html

Pipe weight: calculation using formulas, tables and online calculator – Repair tips

Pipe weight is a parameter that determines the weight of 1 linear meter of a steel part. There are several ways in which this indicator can be calculated. These methods have some differences depending on the types of pipes that differ in cross-sectional shape. Determining the mass of pipes is a serious undertaking necessary for calculating transportation costs and construction nuances.

Calculation of the mass of a steel pipe is used in construction to determine the strength of a future structure

For what purposes is the mass of steel pipes determined?

Steel pipes are widely used in the construction industry. In any project you can find information about the mass of the water supply system laid in the building. The same applies to other pipeline systems and structures made from rolled profiles. The weight of water and gas steel pipes is calculated in several ways. Why else is it necessary to calculate this parameter?

The weight of metal pipes is calculated before transporting the products

The theoretical weight is necessary for sale, since the sale of pipes is carried out taking into account weight, not length. Thus, determining this indicator makes it possible to calculate the cost of a single batch.

Calculation of the mass of these products is used in construction to determine the strength of the future structure. This parameter allows you to find out what loads a frame made of pipes can bear.

Note! Finding the specific gravity helps to increase the accuracy of calculations, since real values ​​often do not coincide with GOST standards.

And finally, the weight of metal pipes is calculated before transporting the products. Transportation must be carried out using special cargo equipment, taking into account the possible load. When concluding a contract that specifies the number of products and their weight, you should be sure that transportation will be carried out in one trip.

Knowing the weight of pipes is necessary for sale, since the sale of material is carried out taking into account weight, not length

Thus, knowledge of the weight of steel pipes is a necessary condition when purchasing them. Of course, when purchasing these parts individually, there is no need for such a calculation. Determining the weight in such a situation may be required only in order to calculate the real cost of the products.

How to correctly calculate the weight of a pipe yourself: recommendations

You can calculate the mass of a steel part of this type yourself (without using government standards). First of all, it is necessary to determine the basic physical and geometric characteristics of rolled metal. Calculating the weight of round parts is somewhat different from calculating this parameter for profile pipes (rectangular and square).

To determine the weight of a meter of pipe having a circular cross-section, it is necessary to measure its internal and external diameters. For profile pipes, a mandatory step is to determine the width and height. If necessary, you can use regulatory documentation that is publicly available on the Internet. The corresponding GOSTs contain all the necessary information about pipes of any type. It is important to remember that for each type of these parts there is a corresponding document.

In order to determine the mass of a meter of round pipe, you need to measure its internal and external diameters

Many indicators (for example, length) can be determined independently using a construction tape. In order for the calculation to be as accurate as possible, it is recommended to find out the type of material and its brand.

You can find out how much a pipe weighs without making complex calculations. GOST standards regulating metal pipe products contain special tables. They indicate the main indicators characterizing the part (including weight). You can also use an online calculator, which contains an algorithm for calculating mass.

Advantages and disadvantages of rolled steel pipes

Steel products have many advantages that we recommend you pay attention to. First of all, it is worth noting that parts made from this alloy have high strength characteristics.

It is this fact that determines their widespread use in the construction industry, where the strength of products is one of the main indicators. A wide range of parts is also considered an important advantage, as it allows you to expand their operational scope.

On the construction market, you can easily select parts that are suitable in shape and technical characteristics.

Note! The production and sale of these products are carried out in linear meters. The weight of the pipes is the main characteristic that affects the cost.

Metal pipes have high strength characteristics

All steel pipes can be divided into three categories:

• round;
• profiled (square and rectangular);
• non-standard (multifaceted).

A serious advantage inherent in these products is that they have high resistance to mechanical stress. Steel pipes withstand pressure and shock well. It is worth noting that they have an acceptable cost and belong to the middle price segment.

A wide variety of types of parts allows them to be used in various fields: construction, household, etc. Steel products have a small linear expansion rate. This is a very important advantage, since many pipes expand when heated, and if they are placed in a screed, this can lead to cracks.

In order to answer the question of how to calculate the weight of a pipe, it is necessary to become more familiar with all the methods that allow this calculation to be made. Knowledge of the weight of steel products is required at all stages, from their acquisition to installation.

A wide variety of steel pipes allows them to be used in various spheres of life.

Rules for calculating the weight of a steel pipe

Many people may think that determining the mass of pipes is a simple matter. However, such a calculation has many nuances that need to be paid attention to. First of all, it is important to remember that when purchasing a batch of steel pipes, it is necessary to check the weight. Any discrepancies in the calculations may lead to the fact that there is simply not enough material.

Excess weight may affect the construction characteristics of the future structure. The load exerted on the structure must be within the limits previously calculated and indicated in the corresponding drawing. The weight of 1 meter of pipe is calculated taking into account the grade of steel from which the product is made.

It often happens that the actual weight of the pipe does not correspond to the specific gravity prescribed in the regulatory documentation. This happens due to the nature of production. It is almost impossible to produce a product that perfectly matches the documentation. Therefore, GOSTs indicate permissible dimensional deviations.

When determining the weight of a meter of steel pipe, it is recommended to use several methods at once. This will reduce calculation errors to a minimum. If a formula is used to determine the mass, then it is recommended to double-check the reliability of the final results several times.

When purchasing a batch of steel pipes, you must check the weight

Pipe weight : how to calculate weight when purchasing

Most often, manufacturers who produce various types of metal pipes sell their products in wholesale quantities. Individual parts are also sold, but the percentage is much lower compared to large orders placed by developers and individuals.

Helpful information! Measuring the length of products that make up one batch is not a convenient solution.

In order to simplify implementation, the cost is calculated taking into account the mass of the batch, which is determined based on the mass of the part. To calculate it, you need to know the weight of 1 meter of pipe.

This is the fastest calculation method, but it is not the best for the customer. This is due to the fact that after using steel pipes, as a rule, a certain percentage of surplus remains.

To determine the mass of a batch in production, two methods are used. The first of them takes into account the use of an online calculator. This program allows you to quickly calculate the weight of steel parts. Often, an online calculator is posted on the website of a company that produces steel products. Thus, each buyer can determine the required batch weight in a matter of minutes and immediately place an order.

To determine the mass of a batch of pipes in production, you can use several different methods

The second method to calculate the weight of steel pipe for purchase is weighing. It is produced using special cargo equipment. This operation is performed in 2 stages. First of all, the car (or trailer) is placed on the scales, which allows you to determine its weight. Next, a batch of metal parts is loaded into it. The initial weight of the vehicle is subtracted from the resulting figure to obtain the total mass of the batch.

Each buyer can come to production if it is necessary to determine other characteristics of the batch. For example, you may need to calculate the number of pipes in one order. It is also very often necessary to know the length of products. As a result, carrying out such calculations will allow you to place an order not by weight, but by the number of packages.

Calculation of steel pipes: weight of round products and features of its determination

Round pipes made of steel are very popular when laying various communications. It is important to remember that such products have their own characteristics for calculating mass. To determine this indicator, you need to know some physical and geometric characteristics. Before starting the calculation, you will need the following data:

Round-diameter steel pipes are very popular when laying various communications

• outside diameter;
• section shape;
• steel grade (for calculation accuracy).

The easiest way to calculate in this case is to use a special online calculator. Calculating the weight of a steel round pipe using a special program that contains a formula that allows you to quickly determine the weight is very simple. All you need to do is enter the required part parameters in the appropriate cells.

Note! It is important to remember that when calculating the weight of a product with a round cross-section, the main indicator is the alloy grade. Experts do not recommend carrying out calculations without taking this characteristic into account.

To find the desired value, the following action is performed: the volume of the material is multiplied by the density of the steel. The density indicator for steel is a fixed unit and is 7850 kg/m³. Using this calculation, you can determine the mass of any round part (for example, the weight of a 76 mm pipe).

When calculating the weight of a round metal pipe, the main indicator is the alloy grade

Today, there are two methods that allow you to calculate the volume of a round steel product or part made of another material. The first of them involves the calculation of a preliminary blank (sheet) from which the pipe is manufactured. In the second case, it is necessary to find the difference between the volumes of the outer and inner cylinders.

Formulas for determining the mass of steel round pipes

Mass is calculated using special formulas. In order to understand them, it is recommended to study the calculation steps and values ​​​​used in more detail. The first formula requires knowledge of the diameter of the steel product and the thickness of its wall. As an example, the calculation of the weight of a pipe 219x8 mm is given. First, the surface area of ​​1 meter of the part is determined. This equation looks like this:

S = π x D, where:

Source: https://psk-remont.ru/2018/08/15/%D0%B2%D0%B5%D1%81-%D1%82%D1%80%D1%83%D0%B1-%D1 %80%D0%B0%D1%81%D1%87%D0%B5%D1%82-%D1%81-%D0%BF%D0%BE%D0%BC%D0%BE%D1%89%D1 %8C%D1%8E-%D1%84%D0%BE%D1%80%D0%BC%D1%83%D0%BB-%D1%82%D0%B0%D0%B1%D0%BB%D0 %B8/

How to correctly and quickly calculate the weight of rolled metal - with and without tables

The issue of calculating the weight of rolled metal is relevant not only for specialists, but also for private developers and home craftsmen. If you have a reference book at hand and, especially, an online metal calculator, it is not difficult to make the appropriate calculations. What if you only have a tape measure and a calculator on your phone? It is difficult to obtain accurate results with such an arsenal, but it is quite possible to approximately determine the weight of some metal products.

We calculate the weight of rolled sheets

The simplest option is rolled steel sheets.

Definition! In all our calculations, the base value is the average density of steel - 7,850 kg/m3 according to the SI system.

First, let’s carry out a simple step - find out the mass of a square meter of steel sheet 1 mm thick. It looks like this - 1 m x 1 m x 0.001 m x 7850 kg/m3. That is, we multiplied the length, width and thickness of the sheet (all values ​​were taken in meters), and we got the volume of the product. The product of volume and density gives mass - 7.85 kg. Thus, we found out that a square meter of steel sheet 1 mm thick weighs 7.85 kg.

And then all calculations are made by multiplying the value of 7.85 kg by the area and thickness of the real sheet. For example, you need to buy a sheet with a thickness of 4 mm and an area of ​​2 m2. The mass of such a product is determined by the formula 7.85x4x2 = 62.8 kg. A sheet of the same size, but 2 mm thick, weighs 7.85 x 2 x 2 = 31.4 kg.

If you are satisfied with the approximate calculation, round the value of 7.85 kg to 8 kg. Then calculations can be carried out even in your head without a calculator, and the error will be less than 2%.

We present the weights of steel sheets of the most popular sizes.

Sheet thickness, mm	Sheet dimensions, m	Sheet weight, kg	Weight 1 m2, kg
0,35	1.0x2.0	5,5	2,75
0,35	1.25x2.5	8,59
0,5	1.0x2.0	7,85	3,93
0,5	1.25x2.5	12,27
0,8	1.0x2.0	12,56	6,28
0,8	1.25x2.5	19,63
1,0	1.0x2.0	15,7	7,85
1,0	1.25x2.5	24,53
1,5	1.0x2.0	23,55	11,78
1,5	1.25x2.5	36,8
2,0	1.0x2.0	31,4	15,7
2,0	1.25x2.5	49,06
2,5	1.0x2.0	39,25	19,63
2,5	1.25x2.5	61,33
3,0	1.0x2.0	47,1	23,55
3,0	1.25x2.5	73,59
3,5	1.25x2.5	85,86	27,48
4,0	1.5x6.0	282,6	31,4
5,0	1.5x6.0	353,25	39,25

What is a conversion factor

Let's complicate the task. Suppose you need to buy a sheet of non-ferrous metal. Let's use a conversion factor, which is the ratio of the density of a particular metal or alloy to the average density of steel. By multiplying the weight of a steel product of a certain range and size by the coefficient of the desired metal or alloy, we obtain the weight of the part.

Name of metal or alloy	Coefficient
Aluminum	0,34
Copper	1,14
Brass LS59	1,08
Bronze OTS 5-5-5	1,12
Gray cast iron	0,9

Example - let's calculate the mass of a bronze sheet with a thickness of 2 mm and an area of ​​2 m2.

7.85x2x2x1.12 = 35.2 kg

Attention! The same simple algorithm can be applied to non-metallic sheet materials, for which there are also conversion factors. For example, for rubber - 0.17-0.23, organic glass - 0.15, caprolon - 0.15, textolite - 0.18, rubber - 0.17-0.23.

How to find out the mass of a pipe

To determine the mass of pipes, it is optimal to use tables.

Nominal diameter, inch/mm	Wall thickness, mm	Weight, kg	Nominal diameter, inch/mm	Wall thickness, mm	Weight, kg
1/4 (8)	2,35	0,65	11/4 (32)	3,25	3,14
1/2 (15)	2,65	1,22	11/2 (40)	3,25	3,61
3/4 (20)	2,65	1,58	2 (50)	3,65	5,1
1 (25)	3,25	2,44	21/2 (65)	3,65	6,51

If you don’t have access to reference materials, and simple geometric formulas are not an obstacle for you, calculate the weight yourself. To do this, we find the difference between the area of ​​the circle along the outer radius and the area along the inner radius. We multiply the resulting difference by the length of the pipe and the density of the steel - 7,850 kg/m3.

For pipes made of non-ferrous metals, the conversion factors that we discussed above are used.

How to find out the mass of a cylinder using tables for a round bar

If you have access to tables for calculating the mass of round timber, then it is very easy to determine the mass of a cylinder with any wall thickness. To do this, find the weight of 1 m of rod along the outer diameter of the cylinder and subtract from it the weight of 1 m of rod along the inner diameter. Multiply the result by the height of the cylinder (in meters). The mass of the cylinder is found.

How to calculate the mass of an equal angle angle, channel, I-beam

The weight of a linear meter of corner metal depends on the width and thickness of the shelves.

Attention! The weight of a corner calculated using a geometric formula or determined from a table may differ greatly from the actual one. This is due to the fact that some manufacturers, in order to reduce the cost of products, reduce the thickness of the corner flange in places where verification measurements are not provided. Such a difference can significantly exceed the tolerances provided for by GOST.

Weight per linear meter of the most common range of equal-flange angles

Shelf width, mm	Shelf thickness, mm	Weight of 1 m corner, kg	Shelf width, mm	Shelf thickness, mm	Weight of 1 m corner, kg
20	3	0,89	40	3	1,85
20	4	1,15	40	4	2,42
25	3	1,12	45	3	2,08
25	4	1,46	45	4	2,73
32	3	1,46	50	3	2,32
32	4	1,91	50	4	3,05
36	3	1,65	63	4	3,9
36	4	2,16	63	5	4,81

It is difficult to independently calculate the mass of a channel and an I-beam due to the complex shape of the section. In this case, tables are used.

Channel weight table

Profile number	Weight 1 m, kg	Profile number	Weight 1 m, kg	Profile number	Weight 1 m, kg
5	4,84	12	10,4	20	18,4
6,5	5,9	14	12,3	22	21,0
8	7,05	16	14,2	24	24 ,0
10	8,59	18	16,3	27	27,7

I-beam weight table

Profile number	Weight 1 m, kg	Profile number	Weight 1 m, kg	Profile number	Weight 1 m, kg
10	9,46	18	18,4	27	31,5
12	11,5	20	21,0	30	36,5
14	13,7	22	24,0	33	42,2
16	15,9	24	27,3	36	48,6

Metal weight calculators

If you have access to the Internet, calculating the mass of rolled metal is not difficult. The metal calculator can be used online or downloaded to your computer.

How the calculation is performed:

• Select the type of rolled metal from the list.
• Fill in the data in the dimensions specified in the program.
• Press the calculation button.
• Calculators also usually indicate the weight of a linear meter of a specific assortment and the number of meters per ton.

Attention! All data provided by metal calculators is based on GOST. In the absence of tabular values, the mass is calculated using geometric formulas, adjusted for the manufacturing features of these products. In standard calculations, the density of steel is assumed to be 7,850 kg/m3.

The actual mass of rolled metal almost always differs from the theoretical one.

How to use reference books

A convenient reference material is the collection of authors P.M. Polivanov. and Polivanova E.P. “Tables for calculating the mass of parts and materials.” The directory contains tables that allow you to easily and quickly determine the weight of rolled products of round, rectangular, hexagonal sections, sheets and strips, equal and unequal angle steel, I-beams, channels, round and profile pipes.

The collection contains formulas that can be used to calculate the areas and volumes of geometric figures. A detailed table of conversion factors allows you to accurately calculate the mass of a non-ferrous metal or its alloy.

Approximate calculation methods can only be used to preliminary determine the mass of materials, products and structures. To draw up design documentation, only accurate data that fully complies with GOST is used.

Source: https://www.navigator-beton.ru/articles/kak-podschitat-ves-metalloprokata.html

Steel pipe weight: calculator and calculation tables

You can find out the mass of rolled metal in different ways. It can be calculated or found using tables. Using a calculator, the weight of a steel pipe can be found in a fraction of seconds. We suggest that you familiarize yourself with the main methods for determining mass to make it easier to give preference to a specific technique.

The weight of the profile pipe is an important characteristic

Profile pipes - types, types

Manufacturers offer rolled metal products of various types and sizes. In mechanical engineering, the construction industry, furniture production and other fields, profile products are widely used, each of which has its own distinctive features and possible area of ​​use. We invite you to familiarize yourself with the possible options to make it easier to make a choice during the purchasing process.

Rolled profiles come in various types and types

Electric welded straight seam pipes

Steel strips are used to produce electric-welded straight-seam pipes. During the production process, the workpiece is given the desired shape, followed by the formation of a weld along the product being manufactured. Depending on the method of forming the workpiece used, profile pipe products can be:

• cold-worked;
• hot-deformed;
• cold rolled;
• cold drawn.

Manufacturers offer round and rectangular rolled products of various categories depending on the chemical composition of the alloy used for their manufacture. Due to the technological features of production, such steel products have certain disadvantages:

• In the transverse direction, the resulting stresses are distributed unevenly;
• In places of bending, thinning of the profile may be observed.

Attention! The weight and dimensions of the rental are standardized.

The seam runs along the entire product

Electric-welded cold-deformed

Regulatory documents establish requirements for the outer diameter, wall thickness and weight of one linear meter of rolled pipe. Can be supplied in a heat-treated state or without heat treatment.

Allows operation at high and low pressure. Withstands high temperatures. It has a wide range of uses, ranging from utilities to the oil and gas industry.

Regulatory documents contain tables of pipe weights and their main dimensions.

Cold-deformed pipe with welded seam

Seamless heat deformed

Seamless (solid-drawn) rolled metal is produced from a monolithic cylindrical billet, which is heated to a given temperature during the production process. A hollow cylinder is formed on a piercing press, after which the rolled product is sent to rollers for final shaping.

The technology used makes it possible to obtain rolled steel pipes with a maximum wall thickness of 75 mm, characterized by increased strength characteristics.

Seamless for increased durability

Scope of application of various types of profile pipes

Profile metal products are characterized by a wide range of uses:

• Transportation of various liquids . With its help, the installation of heating mains, main water pipelines and water supply systems for a private home is carried out. In the latter case, preference should be given to galvanized rolled steel;
• Installation of metal structures . Most often, preference is given to profiled rolled steel with a rectangular or square cross-section. Round products are used as columns or supports. When installing metal structures, the weight of the profile pipe is very important, as it affects the load on the supporting structures;
• Steam/gas transportation . For this purpose, exclusively steel products are selected. Products made from other materials cannot be used;
• Manufacturing of registers in steam heating systems.

Metal structures are popular

Materials for the manufacture of profile metal pipes

The characteristics and composition of the material used for the manufacture of rolled profiles largely determine their purpose and possible area of ​​use. Most often preference is given to:

• general purpose carbon steel (St 3);
• low alloy steel (09G2S);
• carbon quality steel (Steel 10, 15, 20);
• stainless steel (08Х18Н10Т, 12Х18Н12Т, 12Х18Н10Т);
• aluminum alloys.

The composition of the alloys used may vary significantly

Why do you need to calculate the weight of a steel pipe?

The total mass of a steel structure is important quantitative information. Even at the stage of rolled metal production, this indicator allows you to determine how much raw material will be required to produce a batch.

Also, the weight of rolled metal must be known at the transportation stage. To quickly determine the weight of 1 meter of steel pipe, all the necessary information regarding the dimensions of the transported products is entered into the online calculator. Depending on the obtained value, preference is given to a vehicle of a certain type. The weight of rolled steel pipes is necessarily reflected in the accompanying documentation, as well as financial reporting, accounting, and warehouse documents.

The mass of steel products must be determined at the design stage of metal structures. Their strength, reliability and service life depend on this. The easiest way to find mass is to use a calculator or tables. However, if necessary, you can perform a calculation. The procedure in this case will depend on the shape of the cross section. Invites you to familiarize yourself with the basic formulas.

The calculation procedure depends on the cross-sectional shape

Calculation of the weight of a round pipe

We begin the calculation by determining the linear dimensions of rolled metal. If they are given in millimeters (mm), you should immediately convert to meters. The weight of the round pipe is determined in the following sequence:

• We determine the circumference by multiplying the outer diameter by the number “Pi” (3.14);
• We calculate the surface area of ​​\u200b\u200bone meter by multiplying the previously found circumference by the length;
• Find the volume of the substance contained in a linear meter. To do this, multiply the surface area by the wall thickness;
• To determine the theoretical weight of a linear meter, we multiply the previously determined volume by the density of the steel (7850 kg/m³).

Attention! To find the weight of the entire pipeline, the weight of a linear meter should be multiplied by the total length.

Wall thickness affects the weight of rolled metal

Calculation of the weight of a rectangular pipe

If the product has a rectangular profile, the weight calculation is performed as follows:

• We calculate the perimeter, which is numerically equal to the sum of the sides of the product (twice the length and width);
• Find the surface area by multiplying the perimeter by the linear meter;
• We calculate the volume of substances by multiplying the surface area by the wall thickness;
• We determine the mass of a linear meter by multiplying the volume by the density of the steel

Calculating a rectangular steel pipe is easy

Calculation of the weight of a square pipe

The procedure for calculating rolled pipe with a square cross section is practically no different from the sequence described above. To find the perimeter, the length of one side of the product should be multiplied by four.

The formula for calculating the weight of the pipe in this case will look like this:

m = ro / 7850 × 0.0157 × s × ( A × 2 – 2.86 × s ) × L , where

ro – specific gravity;

A – side length;

s – wall thickness;

L – pipeline length;

7850 – density of carbon steel.

All linear dimensions are needed for calculation

If you don’t want to calculate the mass of purchased rolled steel yourself, you should use the reference tables contained in the relevant GOSTs or pay attention to an online pipe calculator. They show significant assistance in finding the desired value for pipes of various shapes.

Weight depends on cross-sectional shape

Steel Pipe Weight Table

First, you should find a suitable table for the weight of a steel pipe depending on its cross-sectional shape. Then clarify the linear rental parameters. For round pipes, measure the diameter and wall thickness; for square and rectangular pipes, measure the length of the sides and thickness. After this, at the intersection of the corresponding linear dimensions, it will be possible to find the desired value for a linear meter, expressed in kilograms. To go to tons, the found value should be divided by a thousand.

Using the table, finding the weight is easy

Online profile pipe weight calculator

To save time, you should use an online profile pipe weight calculator.

Thus, you can find the weight of a steel pipe in various ways: by calculation, using tables and using an online calculator. Share in the comments which method, from your point of view, is the most accurate.

Source: https://HouseChief.ru/ves-stalnojj-truby-kalkulyator.html

Metal weight calculation

The metal is widely used in various industries. When creating metal structures, it is necessary to first calculate two important indicators: strength and total weight.

The strength of the structure can be calculated using the methods of the theory of strength of materials. Weight is calculated taking into account the following characteristics:

• standard sample density (determined by physical characteristics);
• metal shape (according to the existing assortment - rolled sheets, channel, angle, pipe, etc.);
• geometric shape, part dimensions.

Metal weight calculation

The presence of various forms of metal products requires an individual approach when calculating the following parameters:

• the mass of the entire metal structure;
• required volume of metal.

What is a conversion factor?

It allows you to calculate the weight of products made of any material. It is obtained as the ratio of the density of the selected material to the density of steel. Next, to calculate the required parameter, it is enough to calculate such a parameter of a steel product of a given shape. The resulting result will be multiplied by the conversion factor for this material.

The coefficient is a dimensionless quantity. It has its own specific meanings for various metals and alloys. For example, aluminum has 0.34, copper - 1.14, and 1.12 is used for OTS5-5-5 bronze.

To calculate the weight of a sheet made of the specified bronze, it is necessary to obtain the parameter of the same sheet of steel, multiplying with a conversion factor.

Metal conversion factor

The same calculation method, the use of a conversion factor, can be fairly applied to non-metallic rectangular products. For example, to textolite with a coefficient of 0.18, organic glass - 0.15. The results obtained will satisfy the accuracy requirements.

What makes calculating the weight of metal more difficult?

A serious difference in the data obtained for calculating the mass of a steel product is the technology of its production. The difference between cold-rolled metal and hot-rolled metal can be quite significant. We are talking about the accuracy of geometric characteristics while maintaining density along the entire length of the product.

The use of continuous heating and subsequent cooling leads to such negative phenomena as oxidation and recrystallization. The unevenness of these processes causes a change in such a parameter as thickness.

Metal weight

The accuracy of calculations for cold-rolled and hot-rolled metal profiles will differ. The error caused by thickness instability requires obtaining some average value.

How to calculate the mass of a rectangular profile?

A rectangular profile is a parallelepiped with a given wall thickness. The wall thickness is specified in the technical documentation for a specific sample.

Square profile

Mass calculation can be done in two ways. In the first method, the cross-sectional area is calculated: for a sheet of a given thickness. Calculate the mass of a rectangular parallelepiped based on its external dimensions. Then the same calculations are made for a parallelepiped with internal dimensions. The difference between the two values ​​will be the desired characteristic.

In the second method, the weight of one wall of the structure is calculated. If the cross-section is square, multiply by four. If it is rectangular, the sizes of the smaller and larger walls will be calculated separately. Then multiply each value by two and add the results to get the final figure.

Square profile weight

To simplify the process, special tables have been developed.

Determining the weight of a round profile

Round metal products include solid rods, fittings, and pipes of various diameters. The approach to solving the problem remains the same. If the product is solid, it is necessary to calculate the volume, multiply by the density of the material. The volume of metal is calculated using known geometric formulas.

Round profile weight

If the round workpiece is hollow inside, you need to know the wall thickness. Next, you can use one of the methods applicable to calculate the value of rectangular rolled products. The only difference will be the calculated ratios for finding the volume.

How to find out the mass of a hexagonal profile?

Solid metal rods with a hexagonal cross-section are often used. The calculation method for such products remains the same. It is necessary to remember from the school geometry course how the volume of a regular hexagonal parallelepiped is calculated.

The task is greatly simplified if you know the size or number of such a rental. All numbers are given in a standardized table.

The hexagonal profile with the smallest number 10 weighs only 0.68 kg, the largest number 60 weighs 24.5 kg.

Hexagonal profile

The calculations are based on a formula for calculating the volume of a regular hexagonal prism. Having calculated this volume, it is multiplied by the density of the metal. A mass of hexagonal product is obtained.

It should be remembered that the use of simplified methods gives approximate results. They are used for express assessments. When developing design documentation in detail, more accurate indicators are used.

Finding the parameter of a metal pipe of any diameter is carried out similarly to the method for a round profile. Calculate the difference in the areas of two circles. The first has the outer radius of the pipe. The second has the inner radius of the pipe.

The resulting difference is multiplied by the length of the pipe, calculating the volume of metal. Multiplying by the density of steel, the mass of a pipe of a given length is found. Operations with non-ferrous metal products are simplified through the use of a conversion factor.

Pipe weight

When working with ready-made tables, you should find data for a 1 m bar with a radius equal to the outer diameter. Calculate the diameter of the rod, which is equal to the internal diameter. Subtract the smaller value from the larger value to get the desired result. It should be multiplied by the length of the sample.

How to calculate the mass of an angle, channel, I-beam

The parameter is calculated using data on the width of the shelf and the thickness of the metal. The product is considered as half of a rectangular profile.

There are ready-made calculation tables for the entire range of rolled metal products.

However, corners from different manufacturers have real weight characteristics that differ from the tabular data. They deliberately reduce the thickness of the shelf. They are motivated by the desire to reduce the cost of products. The parameter difference differs significantly from the parameters provided by GOST.

Weight of anglesWeight of channelWeight of I-beams

The weight characteristics of the channel and I-beams are determined according to the tables. This is caused by the difficulties of calculating the volume of complex geometric shapes.

Source: https://stankiexpert.ru/spravochnik/materialovedenie/raschet-vesa-metalla.html

Steel pipe weight: formulas and calculation methods

Before you buy, you need to calculate the weight of the steel pipe. This is due to such factors. Firstly, such products are sold by weight. And, secondly, the data obtained will allow us to determine the strength of the structure being created. Any corresponding GOST contains a table of the weight of a steel pipe indicating the standard weight of 1 linear meter. However, actual values ​​may differ from standard values, even if the wall thickness and diameter are the same.

The weight of the pipe is an important parameter that must be taken into account when designing structures from such products

Advantages and disadvantages

The fact that rolled steel products occupy a significant part of the racks in any building materials store indicates that it has certain advantages compared to its competitors. Let's look at them briefly.

• mechanical strength. Rolled steel pipes, first of all, can be used in places where the water supply system is subject to considerable external mechanical influences. In addition, these products are the best choice for organizing the transportation of water under very high pressure;
• relative cheapness. Of course, it is impossible to call a steel pipe the cheapest material. But the fact that it is one of the cheapest similar products is for sure. In this case, the weight of the pipe does not play a major role;
• wide selection of fittings. If you sometimes have to look for a fitting of the required shape, for example, for the same polypropylene water supply system, then ordinary tees or cast iron angles are present in abundance on the shelves of any hardware store;
• small coefficient of linear expansion. This property is very important when the water main (no matter what, steel or other material) is plastered or recessed into the screed. That is, when a steel pipeline is heated, cracks will not appear in such a coating.

The main disadvantages of metal pipe products, in addition to the laboriousness of installation and disassembly, include susceptibility to corrosion and a decrease in useful clearance over time. As for the weight of 1 m of steel pipe, the owner of the future water supply system will feel the great importance of this parameter at all stages of construction. Starting from transportation of a batch of pipe products, including unloading and ending with pipeline installation.

Pipes without a protective coating quickly begin to rust, and this is a serious disadvantage

An example of calculating the weight of a round steel pipe

Regardless of which calculation method will be used, it is necessary to know the numerical values ​​of the following parameters of round steel pipe:

• wall thickness;
• outside diameter.

Important! One of the main characteristics when calculating the weight of a round pipe is the steel grade.

From a high school physics course we know that to determine the specific gravity of a steel pipe, you should multiply the volume of the material used by its density. The last parameter is a constant value, while the volume of the material (in our case it is steel) needs to be calculated. This problem can be solved in two ways. This is the calculation of the volume of a sheet forming a round pipe, or the difference between the volumes of the outer cylinder and the inner cylinder.

1. To calculate the weight of a pipe (for example, with a diameter of 168 mm and a wall thickness of 8 mm) using the first method, you first need to determine the circumference:

          L = π*D - 3.14*0.168 = 0.52752 m.

Here: D is the diameter of the product, and is the well-known mathematical transcendental constant.

To calculate the weight of a pipe, its outer diameter and wall thickness are measured

The next step is to calculate the outer surface area. This calculation is performed by multiplying the circumference of a unit of round pipe production by its length. When calculating the weight of a meter of steel pipe in our case, the formula takes the following form:

                          S = 0.52752*1 = 0.52752 m²,

where S is the surface area of ​​1 m of a round pipe.

At the next stage of calculating the weight of 1 meter of round pipe, the volume of steel used to produce this product is calculated. This is done by multiplying the area by the wall thickness:

V = S*W = 0.52752*0.008 = 0.00422 m²

At the last step of calculating the weight of 1 meter of round steel pipe, the density of the steel is determined. In a special table, the value of this parameter is indicated as follows: 7850 kg/m³. Then the density of the steel is multiplied by the volume:

P = 7850*0.00422 = 33.127 kg.

Table No. 1 shows the calculation results for pipe products of the most popular standard sizes. It must be emphasized that this is a theoretical value for the weight of one linear meter of pipe.

Table 1

Inches	Outside diameter	Conditional pass	Wall thickness	Weight of 1 linear meter, kg
Reinforced	Ordinary veins	Lungs	Reinforced	Ordinary veins	Lungs
2 ½	75,5	65	4,5	4,0	3,20	7,88	7,05	5,71
2 ¼	57
2	60,0	50	4,50	3,50	3	6,16	4,88	4,22
1 ¾	45
1 ½	48,0	40	4	3,50	3	4,34	3,84	3,33
1 ¼	42,3	32	4,0	3,20	2,80	3,78	3,09	2,73
1	33,5	25	4	3,20	2,8	2,91	2,39	2,12
¾	26,8	20	3,20	2,80	2,5	1,86	1,66	1,5
½	21,3	15	3,20	2,80	2,5	1,43	1,28	1,16
¼	10,2	6,0	2,50	2,0	1,80	0,47	0,4	0,37

2. Calculating the weight of one linear meter of pipe using the second method involves calculating the volumes of the inner and outer cylinders. The first step is to calculate the areas of the external and internal surfaces.

The external area is:

Source: http://TrubaMaster.ru/vodoprovodnye/ves-truby.html

How to determine the weight of a steel pipe - proven methods

:

Such an important characteristic for rolled pipes as the weight of a steel pipe is the numerical value that a linear meter of a product has. This parameter is determined taking into account the cross-sectional shape using calculation formulas or using special tables.

Why determine the mass of pipes?

No home construction project can be implemented without taking into account the weight of the piping system.

It is necessary to determine the weight of a metal pipe when purchasing for a number of reasons:

• these products are sold not by linear meters, but by weight;
• this parameter allows you to determine the strength of the structure being built;
• real values ​​often differ from standard values ​​even when the wall thickness and diameter are similar;
• For loading into vehicles, this indicator must be known in order to prevent overload.

When hiring a truck, you need to be sure that the entire purchased batch of pipe products will be transported in one trip. If, when concluding a contract for cargo transportation, tonnage is specified, then you should know in advance how much the products will weigh. Therefore, we can conclude: you cannot do without knowledge of how to calculate the weight of steel pipes when purchasing them.

Advantages and disadvantages of rolled steel pipes

Few materials can be compared to steel in terms of strength, so many developers prefer products made from this metal alloy. The popularity of tubular steel products is evidenced by their wide range of products presented in specialized stores.

They produce and sell rolled steel pipes in linear meters. In the warehouses of these products you can see round, rectangular and non-standard shaped profiles, which are sold both individually and in bundles.

Among the advantages of steel pipes it should be noted:

1. Mechanical strength . These products are used for laying pipelines in cases where they may be subject to significant external mechanical influences during operation. Steel pipes are considered the best choice when arranging a pipeline for transporting liquids under very high pressure.
2. Affordable price . Pipe products are not cheap building materials, but they are not the most expensive of similar products. In this case, the specific gravity of the pipe is not of decisive importance.
3. Wide range of fittings . If, when creating a water supply system from polypropylene products, a fitting of the desired shape is sometimes difficult to find, then iron angles and tees are always available in hardware stores;
4. Insignificant linear expansion coefficient . This value of this parameter plays a big role in cases where the pipeline line is planned to be placed in a screed or covered with a layer of plaster. This means that when the pipes are heated, cracks will not appear in the finishing coating.

Disadvantages of rolled metal pipes:

1. The complexity of installation and disassembly work.
2. Susceptibility to corrosive processes.
3. Reduction of internal clearance during operation.
4. At all stages of construction work, from the delivery of goods to the laying of pipelines, the weight of a metal pipe per meter will be of great importance for the developer.

Determination of the mass of round pipes

Regardless of the chosen calculation option, the following data will be required:

• product wall thickness;
• outer diameter size;
• section - comes in different shapes;
• steel grade.

When calculating the weight of a round pipe, the main characteristic that should be taken into account is the alloy grade. To find out the desired value, you need to multiply the volume of material used by the density of the metal, the average value of which is 7850 kg/m³.

The last value is a constant parameter, and the first still needs to be calculated.

There are two ways to do this:

1. Calculation of the volume of the sheet from which a round pipe is formed.
2. Determination of the difference between the volumes of two cylinders - external and internal.

Option one . To find out the weight of a pipe based on a diameter of 168 millimeters and an 8-mm wall thickness, first calculate the circumference.

To do this, use the formula:

L = πxD - 3.14x0.168 =0.52752 m, where

D – diameter;

Π – constant value – constant.

Next, the outer surface area is determined by multiplying the circumference of one unit of pipe products by its length according to the formula:

S = 0.52752x1 =0.52752 m², where

S is the surface area of ​​a meter of round pipe.

Then you should find out the volume of steel that was used in the manufacture of this product by multiplying the surface area by the wall thickness. For calculation use the formula:

V = SHxW = 0.52752x0.008 =0.00422 m³, where

W – wall thickness value.

At the final stage, in order to calculate the weight of a round pipe, you need to take into account the density of the steel. This parameter can be found in a special table, and it is equal, as already mentioned, 7850 kg/m³. Density must be multiplied by volume:

P = 7850x0.00422 = 33.13 kg.

It is important to know that in the tables that display the results of calculations for pipe products of the most popular standard sizes, the theoretical value of the weight of a meter of steel pipe is indicated.

Option two . When calculating using this method, you need to calculate the volumes of the inner and outer cylinders. First of all, you should find out the areas of two surfaces - external and internal, respectively. The first of them will be:

Snar. = πxD - 3.14x0.168 =0.5278 m².

To determine the second area, it is necessary to know the cross-section of the inner cylinder, in this case it is: 0.168-0.016 = 0.152 m.

Hence, the internal area:

Sinternal = 3.14x0.152=0.4773 m².

Then you can begin to calculate the volumes of the cylinders using simple mathematical calculations, as a result of which they will be:

• for the external parameter - 0.5278×1=0.5278 m³;
• for internal value - 0.4773×1=0.4773 m³.

The difference between them is: 0.5278-0.4773=0.00505 m³.

To complete the calculation of the weight of a steel pipe, you only need to multiply the value of volume and density. In this case it will be: 0.00505×785≈39.6 kg.

The results obtained in the first and second options are different, but this difference is not critical. At the same time, in the table available in GOST, you can see a completely different weight of round steel pipe products. The fact is that manufacturers, when determining this parameter for steel pipes, take into account the errors allowed by this document.

The simplest method for determining the weight of a pipe

There is a simple method that allows you to find out the weight of steel pipes by diameter. In addition to this parameter, information regarding wall thickness will be required. In this case, use the formula:

P = πх(D - Sst)xSst xT, where

D – outer diameter;

T – density;

Sst. – wall thickness.

As a result, the result will be like this:

P = 3.14x(0.168 - 0.008)x0.008x7850 = 31.55 kg.

Using this formula, you can always find out how much pipe products of any size weigh.

For example, one linear meter of a steel pipe with an outer diameter of 75.5 millimeters and a wall thickness of 4.5 millimeters will have a weight of:

P = 3.14x(0.0755 - 0.0045)x0.0045x7850 ≈7.8 kg.

To find out the mass of rolled products of a round or other shape, you need to multiply the resulting weight of one meter by the length of the product. Let's say that it is 10 meters, then: 7.8x10 = 78 kg.

But the final result will depend not on one grade of steel, but also on the production technology. Thus, the weight of an electric-welded pipe will not be the same as that of a seamless rolled product, provided that their basic parameters are the same.

The reason for the difference is that for each type of pipe product, certain raw materials are used, which differ in density. There is one more important nuance: galvanized products, compared to non-galvanized pipe products, will weigh 3% more, and with similar parameters.

The procedure for calculating the weight of profile pipes

Rolled steel pipes of various shapes are sold on the domestic market: round, square, rectangular. How to correctly calculate the mass of a linear meter of a profile pipe?

Calculation No. 1 . For example, let's calculate the weight of a square pipe. To do this, use the following formula:

P = (L - Sst)xSstx0.0316, where

P is the weight of a meter of product;

Sst. – wall thickness;

L – size of the side of the square;

0.0316 is a constant determined empirically.

If L=60 mm, and Sst. =3 mm, then:

P = (60-3)×3×0.0316 =5.404 kg.

Source: https://trubaspec.com/vidy-trub/kak-opredelit-ves-stalnoy-truby-proverennye-sposoby.html