Application of channel in construction
Application of channel in construction
When constructing large construction projects, the need arises to construct a reliable load-bearing frame. For its construction, all kinds of rolled metal are used, from steel beams to various types of channels.
What is a channel? Why is it so in demand in construction, and what types of channels exist today?
What is a channel?
A channel is a standard metal profile with a U-shaped cross-section. Today, there are various types of channels, which differ from each other in their manufacturing method and configuration. A wide variety of channels can be viewed on this website rostov.atlantis.com.ru/katalog/shveller, where a wide range of this rolled metal is presented.
The main characteristics of any channel are its length, height and width of the “neck” (the distance from the edges connecting the channel). The materials used for the manufacture of the channel are low-alloy or carbon steel, the rolled metal from which is especially durable and reliable in operation.
Today, the channel has found the widest application in construction. Using this rolled metal, it is possible to assemble a support structure without welded joints, which will be particularly reliable and durable.
Types of channels
All types of channels existing today can be divided according to their manufacturing method and configuration.
According to the manufacturing method, channels are:
- Equal and unequal;
- Hot-rolled steel and special channels, which are used primarily in carriage building and mechanical engineering.
According to their configuration, channels can be either with parallel edges or with edges that are made at a certain angle. The length of the channel can also be different, from 4 to 12 meters.
In addition, channels are divided depending on their purpose. For example, there is a channel, common for wide use, which meets the requirements of GOST 8240-89. There is a special channel, which is used primarily in carriage building and mechanical engineering.
However, as mentioned above, the channel found its widest application in construction. Due to its excellent physical and mechanical properties, this type of rolled metal is widely used for the installation of supporting structures, in the manufacture of stairs, interfloor ceilings and much more.
The construction of both domestic buildings and industrial facilities is often impossible without a channel. This rolled metal has also found application in interior decoration, where it is used to make the basis for communication systems.
Hot-rolled channel is simply an indispensable metal product for assembling trusses, columns and roofs, as well as bridges. In addition to construction, this type of channel is also in demand in the carriage building and automotive industries.
Source: https://remstroisovet.ru/primenenie-shvellera-v-stroitelstve.html
What is a channel: types, markings and areas of use
Such a common element of many supporting structures as a channel is a U-shaped profile that can be made of various types of steel, including stainless steel. Channels can differ not only in size (a special table is used to determine each of them), but also in manufacturing technology.
We understand the range of channels
Channels are produced using cold-rolled and hot-rolled technology. U-shaped metal profiles of different brands also have differences in the design of the shelves. Thus, there are channels, the inner edges of the shelves of which are parallel to each other, as well as products, the shelves of which are made with a certain slope on the inside.
However, no matter what version the shelves are made in, the entire range of profiles with a U-shaped section is distinguished by high rigidity, combined with low weight. It is these properties that make it possible to successfully use channels of any size for the manufacture of highly loaded structures for construction and any other purposes.
The main advantages of U-shaped profiles include:
- high strength, ensuring resistance to bending loads;
- the ability to successfully withstand not only bending, but also multidirectional loads (rupture, compression, etc.);
- high resistance to shock loads, which can lead to mechanical damage to the structure (a metal channel, which is made with high quality and in accordance with GOST, has practically no weak points in its design that can cause its destruction from various loads).
Parameters of a channel with a slope of the internal edges of the shelves
Classification
Channel types depend on several criteria. In particular, products are divided into the following groups:
- According to manufacturing technology . In this direction, two categories are distinguished: bent and hot rolled. The differences between the products are as follows: hot-rolled channels have a straight or acute angle between the transverse beam and the vertical edges, bent channels have a rounded bend. This category includes welded structures made of two welded angles and H-shaped ones, called I-channels.
- Rolling precision . There are three groups here: A, B, C, denoting high, increased and normal accuracy, respectively.
- Durability . This criterion determines the resistance of the product to dynamic loads. In particular, there are products on the market with regular and increased strength.
In addition, channels are divided into size groups, where the determining criteria are the length and width of the product.
Series
All channels are distinguished by the peculiarities of rolling (hot and cold) and are produced in the following series (batches):
- "U";
- "P";
- "E";
- "L";
- "WITH";
- "B";
- "IN".
Hot-rolled channels are most often used. Less often - cold-chased. All channels are manufactured on specialized machines.
Marking according to GOST standards
If we talk about GOST , channels are marked with alphabetic and digital designations. Numerical markings indicate the distance between parallel edges, expressed in centimeters. Letters define additional properties of the product. For example:
- P – parallel arrangement of external edges.
- U – the shelves are located at an angle.
- L – lightweight design.
- E – economic category channels.
- C – special products.
For example, the marking of channel 18AP means the following: a high-precision rolled product with a distance of 18 centimeters between the shelves, which are located at right angles.
Special profiles
Custom-made channels can be marked according to the specific application:
- “S” - special (GOST 19425-74), they are more often used in the automotive industry and the production of machinery, machines, cranes and other mechanisms;
- “B” - for carriage building, produced in accordance with GOST 5267.1-90;
- “M” - products for suspended tracks (machine).
Scope of application
As mentioned earlier, channels are used in capital construction. The main purpose of the products is to strengthen concrete structures, which significantly increases the strength and durability of the structure. In addition, channels are used for reinforcing power lines, bridges, industrial buildings and structures.
It is worth noting that perforated products are available for sale. There are special holes designed for quick installation without the use of electric welding. In addition, pipes for quick installation of utilities and cable lines can be located between the shelves.
There are channels made of aluminum alloy, used for the construction of lightweight structures. In particular, internal partitions of interior spaces, shelving, display cases.
Source: https://instanko.ru/drugoe/shveller-razmery.html
Channel - standards, sizes, assortment and features of the use of rolled metal in construction
Modern construction and various branches of mechanical engineering cannot do without metal structures, all kinds of floors and beams. They create rigidity, reliability, and durability.
Steel profiles bent in a special way are called channels. Their difference from other metal products is that in cross-section they look like the letter “P”.
Brief contents of the article:
- Series
- Kinds
- Assortment
- Application
- Choice
- Photo of the channel
Kinds
Depending on the configuration (series), you can see the following channels in the photo catalog:
- Standard, with parallel shelves (“P”);
- With shelf slope (“U”);
- Light series (“L”);
- Normal accuracy (“B”);
- Special sample (“C”);
- Increased accuracy (“B”)
- Economical series (“E”).
Also, hot-rolled channels differ in assortment (size). Low alloy and carbon steel is used for manufacturing. All standard indicators of channels are adjusted to GOST 8240.97.
Assortment
This is the name for the main characteristics of the channels: shelf width, thickness and height. All of them are adjusted to GOST (their cross-sectional parameters must correspond to it). Also, each channel has normal and increased accuracy (marked “B” and “C”).
The length of the channels is standard (2-12 meters). When it exceeds 12 meters, they are considered special purpose channels.
The weight of the channel depends on:
- Lengths;
- Shelf widths;
- Series.
It is most convenient to calculate it using the table of channels, which displays all samples of existing rolled products.
Application
The channel is a very durable structure that can withstand significant loads. It is good friends with concrete, significantly strengthening it during the construction process. It produces excellent reinforcement that increases the stability and strength of reinforced concrete structures.
Various areas of construction cannot do without the use of channels. They are an irreplaceable, durable, reliable material. All kinds of ceilings, frames and ramps are mounted from channels. This increases their operational reliability and durability.
In the process of manufacturing cars for railways and automobiles, specially designed channels are used that can withstand significantly different bending and axial loads.
In the process of interior work, lightweight aluminum channels (profiles) are often used. Made from thin metal, they are convenient for working with drywall and plastic. Such channels, despite their flexibility, create fairly reliable supporting structures.
In the process of reconstructing a building, creating various partitions for physical zoning of space, they are indispensable.
Light type channels (“L”) have a lot of advantages:
- Light weight;
- They are easy to work with during welding and installation of metal structures;
- Well withstand maximum loads both in bending and axially;
- In most cases, during the installation process you can do without welding altogether, assembling all the elements like a construction set!
Channels as reliable supporting elements are indispensable in the construction process:
- Cars;
- Railway cars;
- Ships;
- Various machines and assembly machines;
- houses,
- Foundation;
- All kinds of frames and ceilings;
- Reconstruction of buildings;
- In interior design;
- Advertising neon posters in big cities..
Choice
Before deciding which channel is best to use, it is necessary to carry out calculations according to a special table. To choose the right rolled metal. The reliability of the structure being built will directly depend on this.
Incorrectly carried out calculations and selected channel can significantly reduce the technical characteristics of a structure and make it more vulnerable.
The supporting structure places stringent demands on itself. The correct type of channel must be selected for it. Some varieties simply won't work.
As for the price of the channel, it directly depends on the manufacturer. It is also influenced by the type of rolled metal.
The minimum price is 250 rubles, the maximum reaches 6,000 rubles. and above (per linear meter).
Photo of the channel
We also recommend viewing:
Source: https://stroimaterials.ru/shveller/
What is a channel and why is it so in demand in construction
When constructing major construction projects, the need arises to construct a reliable load-bearing frame. For its construction, all kinds of rolled metal are used, from steel beams to various types of channels. What is a channel? Why is it so in demand in construction, and what types of channels exist today?
Application of channel in construction
However, as mentioned above, the channel found its widest application in construction. Due to its excellent physical and mechanical properties, this type of rolled metal is widely used for the installation of supporting structures, in the manufacture of stairs, interfloor ceilings and much more.
The construction of both domestic buildings and industrial facilities is often impossible without a channel. This rolled metal has also found application in interior decoration, where it is used to make the basis for communication systems.
Hot-rolled channel is simply an indispensable metal product for assembling trusses, columns and roofs, as well as bridges. In addition to construction, this type of channel is also in demand in the carriage building and automotive industries.
Source: https://nowremont.ru/chto-takoe-shveller-i-pochemu-on-tak-vostrebovan-v-stroitelstve/
What is a channel and why is it needed?
Channel is one of the very common and recognizable options for rolled metal profiles. Why is it called that? Its name comes from the name of the German engineer who first used it in construction.
The cross-section of the channel is a wide letter “P”: it consists of two “shelves” and one wall. The channel, like many other types of rolled metal, is specialized in its own direction: it is used mainly in construction and mechanical engineering. It is in demand due to its cross-section, which allows it to bear high loads and with which a tight fit can be achieved.
What kind of channel is there?
The channel is classified according to the following criteria:
- Hot rolled channel (according to GOST 8240-97)
This option is produced by rolling the workpiece at a temperature of ~1200 degrees Celsius.
- Bent equal flange channel (according to GOST 8278-83)
Produced on pipe mills from rolled steel of various qualities and properties.
A hot-rolled channel is superior to a bent channel in terms of strength characteristics (with equal wall thickness), which is why it is used more often.
Hot rolled channel (according to GOST 8240-97) is divided as follows:
- With a slope of the inner edges of the shelves (marked with the letter U).
The shelves of this option are sloped on the inside, which allows them to better resist bending deformations. This channel is more rigid in bending.
- With parallel edges of shelves (marked with the letter P).
As the name suggests, the shelves of this rental are parallel to each other.
- Economical (marked with the letter E)
- Light series (marked with the letter L)
The last two options are used quite rarely.
- Carbon steel
- Low alloy steel
- On special order, high-alloy (stainless, heat-resistant, etc.) steel.
The main volume of the channel is made of carbon steel. A channel made of low-alloy steel is much less common.
Channel brand
Let's start by analyzing the markings of hot-rolled channel No. 20U. The marking is simple: “20” in this case means the outer dimension, that is, the size from one shelf to another (the size is measured along the outer edges of the shelves) in centimeters. That is, it is 20 centimeters. “U” is a channel with a slope of the inner edges of the shelves. Also in this place there may be the letter “P” - with parallel edges of the shelves; “E” - economical; and “L” - light series.
The markings of a bent channel are also easy to read. For example: bent channel 100x50x4. Since this option is made from rolled steel, the final product, like the workpiece for it, has the same metal thickness throughout the entire section of the profile. In this case it will be “4”. The value is indicated in millimeters. 100 in this case is the size of the “wall”, and 50 is the size of the “shelves”.
Why do you need a channel?
Channels are a very common and sought-after type of rolled metal, and are used frequently and extensively. Therefore, the scope of its use is very extensive. We list the main ones:
-
Construction. The following examples can be listed: reinforcement of structural elements, supporting function in structures, niches for various communications (a full-fledged channel is obtained, since the channel is hollow inside).
-
Mechanical engineering. Supporting and fixing parts (remember the flat, convenient “wall”), fasteners, frames, equipment for assembling and welding products, etc.
-
Automotive industry. By analogy with mechanical engineering.
Which channel to choose?
This issue should be approached comprehensively, depending on your goals. If a channel structure will bear critical loads, it is worth involving specialists and making the necessary calculations.
If the channel is a component of non-critical structures, you can use the Internet - look for articles on specialized forums, completed projects similar to yours. Study the reviews of those who have already built a similar project and repeat this experience, taking full responsibility for your own choice. Details for the projects, and, accordingly, the size and cross-section of the channel, will already be recommended.
Rolled metal is produced in a variety of configurations, and in each specific situation its own profile is optimal, be it a channel, a profile pipe, or any other profile. At the First Metal Base company in St. Petersburg you will find a wide variety of ferrous metal. If we don't have the product you need in stock, we can supply it to order.
Source: https://www.1metallobaza.ru/blog/fasonnyy-metalloprokat-shveller
Channel - what is it? Types, description and scope of application of channels
A channel is a very popular product made of metal today. Its main distinguishing property is its U-shaped cross-section. The thickness of the finished product can be from 0.4 to 1.5 cm, and the height of the walls can be 5-40 cm.
Thin flange products are manufactured by processing flexible strip using special profile mills. Channels made from non-ferrous metals are obtained after processing the workpiece by pressing and extrusion, and steel channels are obtained using the technology of hot rolling of a metal billet on section mills.
All varieties of this material are widely used in the construction industry.
Manufacturing of steel channel
A steel channel (GOST 8240-97) has a distinct difference from a conventional beam, which lies in the presence of a special U-shaped section. Such metal products are produced by hot rolling of blanks or using the technology of cold deformation of steel sheets. It is produced in the form of rolled steel 3ps/sp5 and rolled alloys 09g2s. Channels, depending on their shape, are divided into two types:
- parallel - the internal edges are located strictly parallel to each other;
- sloped—internal edges are placed at a slope.
Hot rolled channel
One of the varieties of steel is a hot-rolled channel, the cross-section of which is also U-shaped. It is made in the form of two shelves, which are parallel to each other, and one connecting wall. This channel is divided into 3 types:
- with multiple unmeasured length;
- with multiple measured length;
- with measured length.
As for the channel sizes, they can be non-standard, since everything depends on the wishes and requirements of the customer. Internal edges should have a slope of no more than 10%. Hot rolled channel is a universal material for light and heavy industries.
Varieties
Today, there are other types of hot-rolled channels, for example, a special one for the carriage industry and the same for the automotive industry.
Bent steel channel is produced from low-alloy, hot-rolled, cold-rolled and carbon steel on bending machines. It is divided into two types: unequal and equal. Such rolled metal is used in cases where the structure being erected will be subject to enormous bending loads.
To produce low-alloy steel channels, low-alloy steel is used (as the name suggests). It is characterized by high resistance to various dynamic loads and large fluctuations in air temperature.
Source: https://FB.ru/article/212894/shveller---eto-chto-takoe-vidyi-opisanie-i-sfera-primeneniya-shvellerov/amp
Channel - classification and scope of application | Minprom Group Metal Rolling
A channel is a metal product that forms the letter “P” in cross section. The channel has walls and a shelf. In cross-section, the wall is called a “lintel”, and the shelves are called the legs of the letter “P”. The most important characteristics of shelves and walls are their standard sizes. So the height of a channel means the height of its shelves.
A steel channel is made from rolled steel by hot rolling of blanks on section mills. The channel is made with a slope of the internal edges of the shelves and with parallel shelves. The channel number indicates its height.
Characteristics of the assortment and classification of the channel
The bent channel is made from coiled hot-rolled and cold-rolled carbon steel of ordinary quality, high-quality carbon and low-alloy steel.
According to the manufacturing method, channels are divided into the following types:
- Hot-rolled steel channels;
- Special steel channels;
- Equal-flange bent steel channels;
- Bent steel channels, unequal flanges.
In accordance with its purpose, the channel is divided into:
- Conventional, widely used channel, assortment regulated by the requirements of GOST 8240-89;
- Special, intended for the automotive industry, assortment in accordance with GOST 19425-74;
- Special assortment for carriage building GOST 5267.1-90.
Hot rolled channel - produced by hot rolling of metal. Hot-rolled special-purpose channel is manufactured in accordance with GOST 19425-74 and is specially designed according to industry requests.
Most often, such a channel is in demand in the car industry, as it has the necessary modified geometric characteristics.
For example, a hot-rolled steel channel with a bent flange for trolleys (produced according to GOST 21026-75), the bent flange of which has a deviation from the flange width of 6-10%. The advantage of such a channel is that, being made of alloy steel, it has no restrictions on welding.
Hot-rolled steel channel
is manufactured in accordance with GOST 535-88 in two types:
- Channel with a slope of the internal edges of the shelves: 5, 6.5, 8, 10, 12, 14, 16, 16a, 18, 18a, 20, 22, 24, 27, 30, 33, 36, 40;
- Channel with parallel edges of shelves P: 5P, 6.5P, 8P, 10P, 12P, 14P, 16P, 16aP, 18P, 18aP, 20P, 22P, 24P, 27P, 30P, 33P, 36P, 40P;
Channel with sloped edges - a hot-rolled channel with sloped edges is manufactured in accordance with GOST 8240-97 and has a slope of opposite flanges from 4% to 10%.
Such a channel is marked with the letter “U” and a number in front of it, which determines the distance between the shelves in centimeters.
Channel with parallel edges - this type of channel differs from a hot-rolled channel with sloped flange edges in that it has parallel edges. It is also manufactured according to GOST 8240-97. Such a channel is marked with a letter by type (“P” - with parallel edges, “E” - economical, “L” - light) and a number that determines the distance between the shelves in centimeters.
Channel with sloped edgesChannel with parallel edgesDepending on the rolling accuracy, hot-rolled channels are divided into:
- High accuracy - “A”;
- Normal accuracy - "B".
The special channel is intended for use in the automotive industry (GOST 19425-74) and in carriage building (GOST 5267.1-90).
Depending on the rolling accuracy, the special channel is divided into:
- High strength - “A”;
- Normal strength - “B”.
Bent steel channel is divided into:
- Bent equal-flange channel;
- Bent unequal flange channel.
Steel bent equal-flange channels in accordance with GOST 8278-93 are manufactured on pipe mills from coiled steel of ordinary quality and high-quality carbon structural steel. The height of the equal flange ranges from 50 to 400 mm, width from 32 to 115 mm.
Steel bent unequal-flange channels are manufactured on roll forming mills from rolled cold-rolled and hot-rolled steel of ordinary quality, high-quality carbon structural and low-alloy steel in accordance with GOST 8281-80. They are also divided by numbers, which indicate the distance between the shelves (in mm). The length varieties are the same as for equal-flange channels.
The highest quality category of bent unequal-flange and equal-flange channels corresponds to categories A and B.
Depending on the rolling accuracy, bent channels are divided into:
- High accuracy - “A”;
- Increased accuracy - “B”;
- Normal accuracy - "B".
Forms of bent channel:
- “U” - channel with a slope of the internal edges of the shelves;
- “P” - channel with parallel edges of the shelves;
- “L” - light series channel with parallel flange edges;
- “C” is a special channel.
Due to the wide range of channels available, many GOSTs and technical regulations have been developed for them. The channel's compliance with these GOST standards is the key to product quality.
Application of steel channel
Due to their high axial bending strength, relatively low weight and metal consumption, hot-rolled channel and bent channel are widely used in almost all sectors of the economy.
In addition to special channels used in the automotive and carriage manufacturing industries, as frames, frames and other load-bearing structures, this is the main material used in construction.
The channel is used both for reinforcing reinforced concrete structures and as an independent material for the manufacture of building frames, floors, and ramps.
The channel is used in the construction of large spans and multi-story frame structures. It is often used as reinforcement for walls, roofs, and also to strengthen concrete. The channel perfectly withstands both axial and load-bearing loads.
Price list - channel
The MINPROM GROUP company offers a wide range of steel channels at reasonable prices, which can be found in the price list.
Look at the price list for channel bars in the Dnieper and Kyiv.
Our managers will help you calculate the cost of wire rod, and will also inform you about the discounts currently in effect in our company for the required tonnage and type of channel - call. The MINPROM GROUP company adheres to an affordable pricing policy, so the cost of the channel is quite low.
Visitors who want to buy a channel often search for it like this: channel, channel, hot-rolled channel, bent channel, bending channel, bent channel, bending channel, steel channel, steel channel, steel channel.
Any questions? We will be happy to answer them, contact us.
Source: https://minprom.biz/spravochnik/shveller-klassifikacija-i-oblast-primenenija/
Channel - what is it?
Channels are metal products that are in great demand in the construction industry. If you want to buy a channel in St. Petersburg, then you need to carefully read this article to the end. And so let's get started. Their main unique feature: the presence of a U-shaped cross-section.
The thickness of the new channel reaches 40 mm - 150 mm, the height of the edges is 50-400 mm. In addition, channels are made from various non-ferrous metals, which are obtained by processing the part by pressing and extrusion.
Steel channels are made using hot rolled metal on section mills.
Manufacturing of steel channels
A steel channel differs from a standard beam due to the presence of a pronounced cross-section in the form of a (U) shape. Steel channel is made using the hot metal rolling process or using the cold deformation method of steel sheets. All channels are divided into two types:
- Parallel - the side walls of which are set clearly parallel;
- Sloping - the walls are placed at an angle.
Where is it used?
The above-mentioned channels can be found on almost all construction sites, since this material is very popular and multifunctional. It is mainly used in the construction of residential or industrial buildings, as well as in the construction of home sites, large bridges, etc.
Channel sizes
The table below shows the parameters of channels (U) with inclined edges. This table also shows the parameters of channels (P) with parallel walls.
However, not all channels can have fixed dimensions; some are not of standard sizes, since the buyer himself can indicate the desired dimensions.
Consequently, a steel channel is used specifically to increase the strength and stability of the building structure. The channel bears the main load on the axle, distributing it evenly over the entire surface. Due to this, the structure is given increased rigidity and strength of the erected structure at bending points.
Source: http://weller.ru/stroitelstvo/shveller-eto-chto-takoe/
What is a channel: production features, types of products, areas of application
The construction industry today cannot do without such a product as a channel. These products are made from U-shaped steel. This type of section makes it stand out from many other metal structures. The finished product can have a thickness of 0.4 to 1.5 cm, with a wall height of 5 to 40 cm.
The production technology of these metal structures from non-ferrous metals consists in processing the material by extrusion and pressing. Steel channels are made by rolling a product blank on a section machine. The construction industry finds use for all varieties of this material.
Production of steel channels
In simple terms , a channel is a device necessary to impart high stability to building structures. It distributes the entire axial load over the surface of the structure. Thus, under bending loads, high strength and rigidity of metal structures is ensured.
But unlike a regular beam, channels have a special U-shaped section. The production technology comes down to the hot rolling method of steel combined with the cold deformation method. In addition to steel, non-ferrous metals are used to produce this item. And most often aluminum is used as a non-ferrous metal.
According to the requirements of GOST, channel steel (8240−97) is produced in the form of long products from steel 3ps/sp5, as well as rolled products from alloys 09g2s. According to their form, products are divided into two types:
- Sloping. This product received its name due to the placement of the internal edges at a slope.
- Parallel. This channel is produced with edges located parallel to each other.
A steel channel with a U-shaped cross-section, obtained by hot rolling, is one of the varieties of this product. The object looks like two shelves located parallel to each other and having one connecting wall.
Such products are produced in three varieties:
- With measured length.
- With an unmeasured multiple of length.
- With measured multiple length.
Modern equipment allows us to produce channels of non-standard sizes, taking into account customer requirements. In this case, the slope of the internal faces should not exceed 10%. An object made of hot rolling steel does not lose its demand among light and heavy industries.
Types of hot rolled channel
Options for the production of this product today provide for the possibility of its use in the automotive and carriage building fields. Using bending machines, modern industry produces bent channels:
- Made from low alloy steel.
- Carbon steel.
This production method uses cold and hot rolling methods. In turn, such production involves the production of equal and unequal products. This method is considered special and is used only for making products that can withstand high bending loads.
The production of low-alloy steel products is necessary for construction areas where the use of materials with high resistance to dynamic loads and resistance to high temperature fluctuations is required.
There are five classifications of this product , which are marked with the corresponding letter:
- Special series.
- Products with a certain slope of the internal edges of the shelves (U).
- Economical products with parallel shelf edges (E).
- Lightweight products with parallel shelf edges (L).
- Products with parallel shelf edges (P).
In the construction field, these products have found wide application. With their help, not only multi-storey residential buildings are built, but also industrial enterprises and small country houses. These products are also in demand in the construction of bridges and fences, fences, trusses and other metal structures.
The area of use of bent channel is reduced to the construction of frames during the repair or construction of houses. Among the advantages of this product are:
- ease of use;
- durability;
- efficiency;
- versatility.
The construction area involves the use of this product in conjunction with concrete structures. This metal profile allows you to assemble a structure without using a welded joint. For this purpose, the industry produces perforated products. Such products eliminate the use of welding equipment, especially when this is not possible.
The perforated channel finds its application in fixing electrical communications. It is particularly popular due to its ease of use and transportation. For its production, steel is used using a polymer coating or zinc coating produced by the powder method.
To give the pipeline high wear resistance, you can use the channel as a frame for less durable pipes. Aluminum products are used in lightweight structures, such as office partitions, shelving, and display cases.
Production of channels
Source: https://tokar.guru/metallicheskie-izdeliya/profili-ugolki-shvellery/shveller-vidy-proizvodstvo-i-oblast-primeneniya.html
What is a channel in construction and metal rolling?
The length of such a beam is 2-12 meters (according to GOST), but, in agreement with the manufacturer, it is possible to produce and supply longer versions.
Hot-rolled steel channels are of general and special purpose and are manufactured with a height of 50-400 mm and a flange width of 32-115 mm. According to their shape and size, channels are classified into channels with slanted internal flange edges (U), channels with parallel flange edges (P), as well as special channels (C) used in the automotive industry.
Types of channel
Channels can be equal-flange and unequal-flange, bent and hot-rolled, of increased and normal precision, with sloped internal flange faces and with parallel edges, basic or economical series, made not only from various grades of steel, but also from aluminum, non-ferrous metals and even asbestos-cement ( used in architecture and construction).
1. Hot-rolled steel channels GOST 8240-89
Hot-rolled steel channel for general and special purposes with a height of 50 to 400 mm. and shelf widths from 32 to 115 mm. are divided into:
- with a slope of the internal edges of the shelves: ? 5; 6.5; 8; 10; 12; 14; 16; 16a; 18; 18a; 20; 22; 24; 27; thirty; 33; 36; 40.
- with parallel edges of shelves (P): ? 5P; 6.5P; 8P; 10P; 12P; 14P; 16aP; 18P; 18aP; 20P; 22P; 24P; 27P; PDO; ZZP; 36P; 40P.
2. Special steel channel GOST 19425-74
This standard applies to hot-rolled channels for the automotive industry.
Rolling accuracy of special steel channel GOST 19425-74: high accuracy-A, normal accuracy-B.
Special steel channels are manufactured in lengths from 4 to 13 m
3. Equal-flange bent steel channels GOST 8278-83.
This standard applies to steel bent equal-flange channels manufactured on roll forming mills from cold-rolled and hot-rolled coiled steel of ordinary quality, high-quality carbon structural and low-alloy steel.
Bent channels are manufactured on roll forming machines and differ from hot-rolled ones (manufactured on section rolling mills) visually and, with the same distance between the flanges, have different technical characteristics and load-bearing capacities.
4. Bent steel channel unequal flange GOST 8281-80.
This standard applies to bent steel unequal-flange channels manufactured on roll forming mills from hot-rolled carbon coils of ordinary quality, high-quality carbon structural and low-alloy steel.
In the production of channels, blanks from 4 to 12 meters in length are made, dividing them into blanks of measured length, multiple of measured length and unmeasured length. Rolling of hot-rolled channels can be carried out with high, increased or normal precision.
- With parallel shelf edges
- With a slope of the internal edges of the shelves
Application area of the channel
The channel is used mainly in industry and construction in powerful rod structures (bridges, long-span trusses, etc.), as well as in columns, ties and roof purlins.
The channel is designed to impart rigidity and stability to the structure in which it is used. The use of a channel allows you to increase the load-bearing loads of the entire structure as a whole; it works well in bending and absorbs axial loads.
Currently, the industry has several dozen standard sizes of channels. The number in the standard size designation of a channel is equal to the distance between its outer edges in centimeters (for example, a 20 P channel is an equal-flange channel with a distance between flanges of 200 mm in cross-section).
The scope of application of channels of various sizes and brands is very diverse. The high load-bearing capacity of channels determines their wide range of applications in almost all industries.
The channel is used:
- in architectural construction - for the installation of interfloor ceilings, in strengthening roof purlins, for assembling integral frames of small buildings and small architectural forms, for reinforcing external and internal walls, for installing partitions, for constructing attics, for installing individual elements of reconstructed or newly constructed objects, for strengthening columns, in the construction of bridges, etc.;
- in heavy engineering - as individual elements of metal structures that absorb significant bending loads or axial forces (crane beams, building structures, etc.);
- in machine tool industry;
- in the automotive industry;
- in carriage building.
Cross section of a channel
- GOST 8240-97: Hot-rolled steel channels.
- GOST 19425-74: I-beams and special steel channels. Assortment.
- GOST 5267.1-90: Channels. Assortment.
- GOST 8278-83: Equal-flange bent steel channels. Assortment.
- GOST 8281-80: Unequal bent steel channels. Assortment.
Source: https://the-master.ru/shvellery/chto-takoe-shveller
What is a channel? Description, properties, application and price of channel
It is impossible to imagine construction without metal beams or floors. Using rolled metal, steel profiles of a bent sample are created; they are called channels. The main feature of the profile is that in cross-section it resembles the letter “P”.
Description and characteristics
A channel is a rolled metal product that is widely used in construction. A variety of metal alloys are used for manufacturing.
Channels differ from each other by the method of rolling: as a result of hot production, steel (rolled) is obtained; under the action of a press they create products from light metals (bent). Hot-rolled channels are most often used. They can be divided into the following types:
* Standard channel (ordinary) is produced in various series:
- a product in which the internal shelves have a slope (batch “U”); — a product in which the internal shelves are arranged in parallel (batch “P”); — an economical product, the internal shelves are located in parallel (batch “E”); — a lightweight product with parallel shelves (batch “L”);
— a special sample product (batch “C”).
* Channel GOST values . To produce rolled metal products, two types of steel are used: carbon and low-alloy. For standards of each type, indicate the height, thickness and width of the channel shelves (assortment). According to GOST standards, hot-rolled channel 8240-89 must meet all cross-section parameters.
* A special sample channel is manufactured according to an individual technological process cycle. During production, all standard dimensions are observed, the range of channels is adjusted to GOST 8240-97.
Markings are placed on the channel, depending on the distance (from one shelf to another in centimeters). Under the heading “B” there will be a high-precision channel. Under the heading “B” a channel is created with usual precision.
Most often they are used in automobile and carriage building. With identical shelves, the product is referred to GOST 8278-89, and with unequal shelves - to GOST 8281-80. All profiles are created on profile bending machines.
Channels have a standard release length from 2 to 12 meters. Products over 12 meters are considered special purpose channels. The mass of the channel can be determined by its length, the width of the flanges and the release series (can be viewed in table No. 1).
Table No. 1
| Channel no. | Size, mm | Weight, 1m kg | Meters in 1 ton | |||
| h | b | s | t | |||
| 5U | 50 | 32 | 4,4 | 7 | 4,84 | 206,61 |
| 6.5U | 65 | 36 | 4,4 | 7,2 | 5,90 | 169,49 |
| 8U | 80 | 40 | 4,5 | 7,4 | 7,05 | 141,84 |
| 10U | 100 | 46 | 4,5 | 7,6 | 8,59 | 116,41 |
| 12U | 120 | 52 | 4,8 | 7,8 | 10,4 | 96,15 |
| 14U | 140 | 58 | 4,9 | 8,1 | 12,3 | 81,3 |
| 16U | 160 | 64 | 5,0 | 8,4 | 14,2 | 70,42 |
| 16аУ | 160 | 68 | 5,0 | 9,0 | 15,3 | 65,36 |
| 18U | 180 | 70 | 5,1 | 8,7 | 16,3 | 61,35 |
| 18аУ | 180 | 74 | 5,1 | 9,3 | 17,40 | 57,47 |
| 20U | 200 | 76 | 5,2 | 9,0 | 18,4 | 54,35 |
| 22U | 220 | 82 | 5,4 | 9,5 | 21,0 | 47,62 |
| 24U | 240 | 90 | 5,6 | 10,0 | 24,0 | 41,67 |
| 27U | 270 | 95 | 6,0 | 10,5 | 27,7 | 36,1 |
| 30U | 300 | 100 | 6,5 | 11,0 | 31,8 | 31,45 |
| 33U | 330 | 105 | 7,0 | 11,7 | 36,5 | 27,4 |
| 36U | 360 | 110 | 7,5 | 12,6 | 41,9 | 23,87 |
| 40U | 400 | 115 | 8,0 | 13,5 | 48,3 | 20,70 |
Application in construction
The channel is considered a fairly durable metal structure, and therefore has the widest application in many industrial sectors. In the manufacture of cars and railway cars, special-purpose channels are used. In construction they are most often used as frames, frames, and various load-bearing structures.
Due to its low mass, the channel acts as a full-fledged component of the reinforcement of reinforced concrete structures. As an independent element, it can be seen in the frames of buildings, ceilings, stands and ramps.
This product is an integral part of the load-bearing floors of spans and large structures. To improve the functional qualities of concrete, lightweight channels are used. They are used during the installation of roofing, to strengthen load-bearing walls. The product can withstand a variety of loads perfectly.
The bent channel has the following advantages:
- has low weight; — easy to work during welding work; — able to withstand extreme loads, both axial and bending;
— easy to install, you can do without welding.
Areas of application of steel channel :
* Car manufacturing industry * Automotive industry * Shipbuilding industry * Machine tool industry * Construction industry
*Household industry
Increasingly, rolled metal is being used for the reconstruction of buildings. For private use, it is used for the construction of cellars, greenhouses and hangars. Structures made from channels allow you to save on metal consumption.
The small mass of the product will help create lightweight frames, but this does not in any way affect its strength. The unique invention has a first-class combination with other materials. It can be given a variety of building forms during construction.
The lightest aluminum products are also widely used. They are produced using a stamping press, the scope of application: connections of various joints, as parts of frames for cladding; as interior components.
For example, for the base for drywall, siding or alupane, the sheathing is made from rolled aluminum metal. It is clear that these products will be very lightweight, but during the installation process they can be used to create any designs. In order to correctly navigate during the purchase, you first need to look at the technical specifications.
Small digital values of the product from 5 to 10 indicate that they can be used as full-fledged corners. They are used where it is necessary to connect beams with a square cross-section.
Profiles with indicators 10 and 12 are used as reinforcing components in more massive structures: during the construction of bridges, spans, huge buildings, and so on.
Rolled metal profiles with values from 20 to 40 are actively used where significant loads, both axial and transverse, will be carried out.
I would especially like to note the purpose of profiles with the 40 mark; they are able to withstand extreme loads. Therefore, they are actively used for the construction of huge complex buildings.
For example, they are also often used for the construction of railway bridges. Manufacturers are actively expanding the base of rolled metal profiles. To do this, they often carry out orders for the production of special-purpose channels. Orders for profiles marked “C” from the automotive industry are especially in demand.
When equipping communications, profiles are used as reliable paths. In the process of laying high voltage cables, you can create reliable shafts that allow you to maintain communications for a long time.
The operational life of such a structure is more than 20 years. When laying a water supply system, they also resort to using a channel. It is unique in that any frame can be built from it. If you look closely at the ramp or carts, they are also made of a similar profile.
We can say that channel and concrete simply “adore” each other. Almost every concrete element is weighted with rolled metal reinforcement. For example, there are tall billboards in all cities.
During their construction, steel profiles were actively used. To choose the right profile, it is important to make accurate calculations. This can only be done by a qualified specialist. If the calculations are made incorrectly, the reliability of the future structure will decrease significantly.
Experienced builders note the main feature of the profile - there is no need to use welding during the installation process. To put it simply, products are most often folded like a construction set.
Different lengths allow you to create a wide variety of frames. As noted above, steel profiles are used for the construction of impressive structures. Aluminum is used for interior repair/construction work.
If you use a channel at home, you can easily make a staircase between floors, to the attic, loggia or balcony. The frame will be light and airy.
Then it can be decorated with different materials: wood, plastic, glass or wrought iron. A sliding staircase is often used from rolled material. It will not be heavy, strong and will last a long time.
Price
The price of a channel directly depends on its type and manufacturer. The domestic market offers a wide range of these products at an affordable price from Azovstal, Evraz, NTMK.
The cost of steel channels per linear meter will be as follows:
* With sizes from 5U to 10U it costs from 250 to 390 rubles; * With sizes from 12U to 20U it costs from 500 to 1,180 rubles;
* With sizes from 22U to 40U it costs from 1350 to 6 thousand rubles.
Source: https://zastpoyka.ru/chto-takoe-shveller-opisanie-svojstva-primenenie-i-cena-shvellera/
Channel: application, advantages, production, material, marking and types
A channel is a U-shaped metal product. Its name is translated from German as “skirt”. The channel is widely used. It is used where it is necessary to give the structure additional stability and resistance to high loads. The channel is used as reinforcement for walls or roofs, and as concrete reinforcement. Without it, it is impossible to build a single industrial building or residential building.
Advantages
The economic benefit of operation is that the channel, which is light in weight, has high axial pressure and bending strength. This makes it possible to produce lightweight metal structures. The material lends itself well to machining and is easy to weld during installation. The product is easy to install and transport.
The use of a profile increases the service life of the structure due to the wear resistance of the material. Convenient when carrying out installation work at heights, since due to its low mass, large quantities of the product can be fed upward. Due to the accuracy of the dimensions, the channel can be used immediately without straightening or preliminary adjustment.
During production, the channel is exposed to thermal effects. During this, recrystallization occurs in the crystal lattice of the metal, then annealing, which reduces internal stress, normalization, etc. Annealing increases ductility and toughness and reduces hardness and strength, and this improves the product’s ductility to machining.
Due to its cross-sectional shape, the profile has good strength and rigidity and therefore can withstand heavy loads for a long time while maintaining its properties. It resists moisture, is resistant to mechanical damage and is not subject to deformation since there are no weak points in the material that are susceptible to destruction.
Method and material for production
The profile is made in accordance with the requirements, GOST 8240-97. Structural, high-carbon and low-carbon steel are used as the starting material for production. Steels with alloying elements are also used. The choice depends on the requirements for the technical characteristics of the channel.
During profile production, a rectangular workpiece is heated to the required temperature and fed to a special rolling mill. On this unit, the process of sequential compression of the material by rotating rollers occurs. Since during the manufacture of a channel the dimensions become smaller, the workpiece is taken with a reserve for production.
First, the central part of the product is processed and made into the shape of the Letter M. Then it is leveled and the resulting hot-rolled channel is sent to a machine for calibration. On it the profile is brought to precise dimensions. Despite the labor intensity, hot rolled products have high productivity and good quality.
Markings and types
According to the production method, channels can be divided into two large groups:
- Hot rolled (produced using hot rolling technology, manufactured according to GOST 19425-74).
- Bent (produced using cold rolling technology).
These two types of channels have different performance characteristics and scope of use. You can visually distinguish one species from another by differences in their angles. In a bent channel they are rounded.
In addition, all channels are divided into sizes regulated by regulatory documents. There are three categories of precision in their manufacture:
- "A" - highly accurate.
- "B" - increased.
- "B" is normal.
Channels can have different sizes. The choice of this product for a particular design is determined by its distance from one shelf to another. According to GOST, it can be 32–115 mm. This distance is indicated in nomenclature documents by a number. Which stands immediately after the element designation. And these products are also divided by length. It usually varies in the range of 4–12 meters. The height of the channel shelves can be from 5 to 40 cm.
Depending on the rolling, hot-rolled channels are divided into series:
- “P” - shelves are located parallel to each other.
- “U” - shelves with a slope.
- “L” - the shelves are arranged in parallel, but the product belongs to the light series.
- “C” is a special version of this product.
The most popular types of products of this type are:
- Type 10. A product with a wide range of applications, which is distinguished by high mechanical qualities and characteristics. Used in the construction of large industrial facilities.
- Type 14. The most popular type of channel used in construction. It is used where heavy reinforcement of load-bearing elements of buildings and structures is required. It has high performance characteristics and increased accuracy.
- Type 16. Used in the construction of industrial facilities. It has high strength and can cope with heavy loads.
- Type 20. Used in complex structures. Where high strength and reliability of the product are required. Strengthens bridge supports and is used to strengthen floors in multi-story buildings.
Advantages of hot rolled channel
The main advantage of this product is its shape. Thanks to this, it is used where high rigidity values are needed. Advantages of this type of rolled metal:
- Ability to withstand heavy loads.
- Resistance to deformation.
- Resistance to mechanical damage.
But this metal product has another advantage - the channel is resistant to corrosion.
But there are also disadvantages. Hot-rolled channel is difficult to weld. Therefore, in prefabricated structures, where elements are connected by welding, a product produced by cold rolling is used.
Advantages of bent channel
The production of this type of rolled metal takes place on a special profile bending machine. Paired pressing rollers act on the sheet metal workpiece on both sides, giving it a U-shape. With the help of modern equipment, this process occurs automatically and has a number of advantages: speed, the ability to create a profile of any shape, etc.
Unlike hot-rolled channel, its bent version has low weight. This makes it possible to use this type of channel in lightweight metal structures. The low weight of this product reduces the time for its installation and reduces the complexity of this process.
Bent profile is used:
- In the construction of buildings.
- During the reconstruction of buildings.
- During major repairs.
Lightweight versions of bent profiles can be used to assemble greenhouse frames and erect temporary structures. The scope of use of this product is not only construction, but also carriage building, machine tool building, shipbuilding, automotive industry, etc. It can be used to produce products that have high load resistance, but are light in weight.
Storage and transportation
Channel-section metal products are stored on special platforms, tied with steel tape or wire. It is shipped by weight or linear meters. Products ready for shipment may have rust according to the standards specified in GOST. Transportation of channels is carried out in an open body, van or gondola car.
I-beam or channel?
The choice in favor of one or another rolled metal product is based on the scope of its application. In terms of strength, the I-beam is significantly superior to the channel. Shelves protruding from both sides better distribute weight and are able to withstand significant loads. When heavy loads are placed on the channel, forces arise that tend to twist it. Which cannot happen when using an I-beam.
When comparing these types of rolled metal of the same standard size, wall thickness and shelf dimensions, with a load acting perpendicular to their axis, the U-shaped profile will be stronger. This is due to its shape. The shelves located in one direction make it so that the center of gravity extends beyond its cross section and is shifted towards the ends. While in an I-beam it is located exactly in the middle.
It follows that the channel has better resistance to lateral loads, and the I-beam has better axial resistance.
Which profile should I choose?
It all depends on the design in which the product will be used. I-beams are often used as load-bearing structures. While channels are more versatile. Which makes their scope of use wider. They, unlike I-beams, can be used as elements of cars or sea vessels.
Channels, thanks to shelves protruding only from one side, can be used in various building structures. In fact, in some designs they can even be used as an alternative to I-beams. Whereas reverse replacement is not always advisable. Especially in lightweight structures.
Aluminum channel
Separately, it is necessary to say about the aluminum channel. This is a product that has a “traditional” profile, but is made of aluminum. This metal makes it possible to further reduce the weight of the channel and gives this product a field of application where structures must be lightweight.
U-shaped aluminum profile can be:
- Manufactured using hot pressing technology without hardening.
- Manufactured using hot pressing technology and hardening.
- Aged after hardening.
- Annealed.
The aluminum channel copes well with loads, is resistant to bending and resists torsional deformation. It can be used where there are no high loads. Unlike steel, aluminum has no contact with air or water. This means that it is not afraid of corrosion. Unlike an aluminum pipe, a channel made of this material can withstand the same loads, but significantly reduces the weight of the structure.
An aluminum analogue of a steel channel is used not only in construction, but also in finishing the facade of buildings. Therefore, in addition to its high characteristics, it must have an attractive appearance. And in order for the aluminum alloy not to lose its aesthetic qualities, it is coated with an anodic oxide film.
Conclusion
A channel is a metal product that has a huge range of uses. To select the required type of this product for your needs, you need to calculate the possible loads under which this structural element will be located. Calculation of complex structures should be performed only by professionals. Even one mistake can lead to serious consequences.
Source: https://SoproMats.ru/metalloprokat/shveller/
