Weight of a linear meter of a channel table
· 09.09.2019
Modern construction cannot do without innovative solutions, thanks to which it is possible to significantly strengthen structures and buildings. Hot rolled metal is just that. The U-shaped profile is widely used in various construction works, in the construction of metal structures of medium and high importance.
It is important for customers to know how much a meter of channel weighs. The parameter directly affects the total weight of the entire metal structure. Standard sizes with different numbers have their own weight, which is clearly regulated by GOST 8240-97 . This is the main document that guides manufacturing plants when creating metal profiles. Depending on the models - from No. 5 to No. 40, the products weigh from 4.84 to 48.3 kg - this is the weight of a linear meter of channel.
Ordering a channel: what characteristics you need to know
Metal products for the construction of structures of varying complexity are selected strictly according to the required parameters. The abundance of standard sizes and their modifications makes it easy to choose the most suitable type. Most often, two modifications of channel products are selected:
With parallel edges. Metal products are used in the construction industry, including for repair work and the creation of metal structures of varying complexity. The parallel edges have the optimal distance for laying bricks. Creating and strengthening openings with their help is easy.
With slanted edges inward. The second most popular version of channel models is used in the field of small and large construction.
There are additional types of metal products that are in demand. Profiles can be special, economical, and lightweight. They are marked with the letters “S”, “E”, “L”, respectively. Special and economical products are made to order. The first is based on the personal dimensions of customers, the second is with reduced shelf thickness. This allows you to reduce the total weight of 1 m of channel and the entire finished structure.
The lightweight standard size is suitable for less critical buildings where it is not necessary to create a large-scale stiffening frame. The marking “a” is placed on models of the “P” and “S” series. It denotes the weighted mass of the channel. Most often, metal depots always have categories “P” and “U” in stock - they are in demand among customers.
How much does a channel weigh, other sizes
For production, the standard steel used is St3ps-5 grade - the basis for the strength and indestructibility of metal structural parts. Hot-rolled models are produced from other suitable steel grades - carbon, high-alloy, atmospheric corrosion-resistant. 09G2S is often added to the St3 brand. The table below shows the weight characteristics of metal products.
Number Channel weight PM Channel weight U Channel weight EM Channel weight C Channel weight L| 5 | 4,84 | 4,84 | 4,79 | ||
| 6.5 | 5,9 | 5,9 | 5,82 | ||
| 8 | 7,05 | 7,05 | 6,92 | 11,8 | |
| 10 | 8,59 | 8,59 | 8,47 | ||
| 12 | 10,4 | 10,4 | 10,24 | 5,02 | |
| 14 | 12,3 | 12,3 | 12,15 | 18,51 | 5,94 |
| 16 | 14,2 | 14,2 | 14,01 | 21,95 | 7,1 |
| 18 | 16,3 | 16,3 | 16,01 | 25,7 | 8,49 |
| 20 | 18,4 | 18,4 | 18,07 | 28,83 | 10,12 |
| 22 | 21 | 21 | 20,69 | 11,86 | |
| 24 | 24 | 24 | 23,69 | 44,46 | 13,66 |
| 27 | 27,7 | 27,7 | 27,37 | 16,3 | |
| 30 | 31,8 | 31,8 | 31,35 | 43,88 | 19,07 |
Source: https://vi-pole.ru/ves-pogonnogo-metra-shvellera-tablica.html
Weight of channel 12 – Channel 12, channel 14 – weight 1 meter |
- Channel 12, channel 14 – weight 1 meter |
- Channel 12: weight per linear meter
- Channel(U)
- Channel (P)
- Channel (L)
- Channel(E)
- dimensions, steel and weight according to GOST 8240-97
- Channel weight 12
- Linear weight of channel 10, 12, 14, 16, 18, 20, 22, 24u: weight calculation, GOST 8240-97
- Weight of a steel channel, table for calculating the weight of a steel channel, channel
- Theoretical weight of the channel (GOST 8240-97)
Why do you need to know the weight of 1 meter of channel 12 or channel 14 (the most popular sizes)? To build a house quickly, you have to use a lot of different building materials, including rolled materials.
It is far from uncommon for the design of a task to contain elements from an I-beam or channel. In this particular case, it is desirable to know the weight of the structure as a whole or the weight of 1 linear meter of the product in order to calculate the load on the foundation or choose the right vehicle for transportation.
We’ll talk about the I-beam separately, but let’s consider the question posed now. It must be remembered that the cross-sectional geometry of any brand of product profile may be different.
It all depends mainly on what kind of shelf is obtained as a result of rolling. It can be with parallel edges or with sloped edges.
Accordingly, 1 linear meter of these products will weigh differently.
Weight of 1 meter of channel with internal slope of edges
These are GOST dimensions and weights. As you can see, there are no significant differences in the mass of 12, 14 or other sizes. However, in practice, some deviations from GOSTs may occur. Due to what?
Due to the fact that the heights of the walls during rental can be different. It is this difference that significantly affects the weight of the product.
Those. a higher serial number in size does not guarantee that the product will be heavier.
For example, channel 16 will be lighter than profile 18 only in that specific case if the thicknesses and dimensions of the walls of both numbers are the same. But a situation cannot be ruled out in which the mass of number 16 will exceed the weight of channel 18.
Why do you need to know exactly the weight of 1 meter of channel 12 or 14? After all, this rental is usually 12 meters long? It’s just more convenient to calculate the loads in the structure of the house.
A slight variation in weights can also be determined by the composition of the steel from which the rolled steel is produced. Thus, the mass of a product made of alloy steel may differ from the mass of a channel of the same size, but made of carbon material.
Plus, any production has its own tolerances for products. All businesses, of course, must adhere to certain norms, rules and sizes. But wear and tear of equipment and low qualifications of personnel sometimes dictate their conditions.
11/28/2017Egor11
Source: https://sk-amigo.ru/raznoe/massa-shveller-12-shveller-12-shveller-14-ves-1-metra.html
Navy
Steel channel weight calculator and tables of theoretical weight per linear meter of channel
Depending on the method of channel production, different formulas are used to calculate the weight of a linear meter. In order to calculate the specific gravity of a hot-rolled channel, it is necessary to know the radii of the internal curvature and curvature of the flanges. Also, in the production of hot-rolled channels, in contrast to bent ones according to GOST 8278–83 and 8281–80, the thickness of the flanges often differs from the thickness of the channel wall, which will also affect the weight calculation formula.
In the channel weight calculator, you can search by name and size based on information from reference books of various standards; if a channel of your size is not found, its weight will be calculated using an approximate formula.
The cross-sectional profile of a steel channel is U-shaped. There are several types of channel. They can be distinguished by the letter that is located next to the channel number.
For example: the letter “U” means that the internal edges of the channel flanges are sloped ( GOST 8240-97 ); the letter “E” denotes a series of economical channel bars (GOST 8240-97 ) ; the letter “P” denotes a series of shelf edges that are parallel to each other (GOST 8240-97 ) ; letter “C” special series ( GOST 19425-74 ); the letter “L” means that this channel is light ( GOST 8240-97 ). There are also two types of channels made on a profile bending machine, namely: bent equal-flange channel ( GOST 8278-83 ) and bent unequal-flange channel ( GOST 8281-80 ). Such channels have a rounded cross-sectional shape of the edges. The dimensions of all channel types are given in the tables below.
Steel channels are produced in sizes from 2 to 12 meters. The materials used for manufacturing are: hot-rolled and cold-rolled, carbon, low-alloy, as well as high-quality structural steel. There are channels of regular “B” and increased “B” accuracy.
Read also: Channel p16 weight 1 meter
The use of the channel is different; it has found its application in mechanical engineering and construction. Thanks to its edges, the ability to withstand heavy loads increases. A frame constructed from channel beams can withstand various weather conditions. Currently, it is the main material in the construction of metal structures. Due to its ease of manufacture and relatively low weight, the channel is a leader in civil and industrial construction.
Weight of steel channel. Table
Below are tables of the theoretical weight of steel channels by type.
Channel "U" series
Table 1
Theoretical weight of 1 linear meter of U series channel ( GOST 8240-97 ).
Channel "E" series
table 2
Theoretical weight of 1 linear meter of “E” series channel ( GOST 8240-97 ).
Channel "P" series
Table 3
Theoretical weight of 1 linear meter of “P” series channel ( GOST 8240-97 ) .
Channel "C" series
Table 4
Theoretical weight of 1 linear meter of “C” series channel ( GOST 19425-74 ).
Channel "L" series
Table 5
Theoretical weight of 1 linear meter of “L” series channel ( GOST 8240-97 ).
One linear meter of bent equal-flange channel made of carbon semi-quiet steel with a wall height of 160 (mm), flange width of 40 (mm), rolled thickness of 5 (mm) weighs 8.71 (kg).
Standard weight of channel 16:
Weight of 1 (m) bent equal-flange channel 160x40x5 (mm), dimensions are indicated in the format “wall height/flange width/rolled thickness”:
- From carbon boiling and semi-calm steel – 8.71 (kg).
- Made of carbon mild and low-alloy steel – 9.32 (kg).
Weight of 1 (m) bent unequal-flange channel 160x50x30x4 (mm), dimensions are indicated in the format “wall height / flange width 1 / flange width 2 / rolled thickness”:
- From carbon boiling and semi-calm steel – 7.07 (kg).
- Made of carbon mild and low-alloy steel – 6.96 (kg).
Weight of 1 (m) hot-rolled steel equal-flange channel 160x64x5 (mm), dimensions are indicated in the format “wall height/flange width/rolled thickness”:
- With a slope of the inner edges of the shelves - 14.2 (kg).
- With parallel edges of shelves – 14.2 (kg).
Read also: How to determine where the phase is and where the zero is
Important: when calculating the weight of 1 (m) channel, the steel density is taken to be 7850 (kg/m3), the characteristics of bent and hot-rolled steel channels are determined by the standards GOST 8278-83, GOST 8281-80, GOST 8240-89.
Source: https://morflot.su/shveller-ves-pogonnogo-metra-tablica/amp/
Channel weight 12
Posted by admin on 08/13/2012
So, you are interested in the weight of channel 12. Okay, let's understand its weight.
When asked the question - how much does channel 12 weigh, you need to clarify what exactly is meant. Usually, the question: how much does channel 12 weigh mean something a little different, namely: the weight of a meter of channel 12 (otherwise, the weight of a linear meter of channel, the linear weight of a channel, the specific gravity of a channel, the theoretical weight or calculated, sometimes called the tabular weight of a channel or the weight of a channel according to GOST - it’s all the same thing).
Indeed, as for any other types of rolled metal, for all channel numbers there are standard tabular values for the specific gravity of one linear meter of channel. As for the weight of channel 12, the mass of one meter (theoretical weight) depends not on its shape, but on its height.
That is, channel 12 with parallel edges of the shelves and channel 12 with a slope of the inner edges of the shelves weigh the same, with the same height of the channel.
So, the width of the channel is 120 mm. If the height of the shelf is 52 mm, then the specific theoretical weight of channel 12 is = 10.4 kg. Once again, I draw your attention to the fact that this means how much one linear meter of channel 12 weighs according to GOST. The shape of the edges of the channel flanges does not matter; the weight of the channel is the same for both modifications.
So, the width of the channel is 120 mm. If the height of the shelf is 52 mm, then the specific theoretical weight of channel 12 is = 10.4 kg. Once again, I draw your attention to the fact that this means how much one linear meter of channel 12 weighs according to GOST. The shape of the edges of the channel flanges does not matter; the weight of the channel is the same for both modifications.
What is channel 12?
Channel 12 is an ordinary channel, a standard rolled metal product, which has a characteristic U-shaped rolled shape for a channel, but the dimensions of the width of the channel are indicated - they are equal to 120 mm.
That is, a more correct name for a channel of this size can be considered: channel 120 mm wide or channel number 12 (channels are often indicated by numbers, and the channel number is equal to its width in centimeters). However, channel width 12 is not the only feature that describes this type of channel.
It turns out that channels numbered 12 are different. And not at all green, blue, red, but differing in the height of the shelf and the slope of the internal edges. How to understand this?
More information about the channel can be found and read in the book Sakhnovsky M.M. Handbook of the designer of steel welded structures. . In the reference book you can find out what a channel is, what types of channels there are, GOST standards, characteristics, assortment and nomenclature of the channel. You can read the book, and you can also download the book for free .
Types of channel 12
There are two types of channel 12, they differ from each other in the slope of the inner faces of the channel. This can be seen more clearly in the drawing of channel 12.
drawing of channel 12 drawing of channel 12 The first type of channel 12 - the modification is called correctly: channel 12 with a slope of the internal edges of the shelves in accordance with GOST 8240-72. Channel 12 diagram in the photo. drawing of channel 12 drawing of channel 12
The second type of channel 12 modification is called correctly: channel 12 with parallel flange edges in accordance with GOST 8240-72. Channel 12 diagram in the photo. ..
Some modifications of the channel are available with different flange heights; in the drawing, the height of the channel flange is indicated by the letter v.
drawing of channel 12 Drawing of channel 12 shelf 52
So channel 12, having a width of 120 mm, is produced with a shelf height of 52 mm. The photo shows a drawing of channel 12, with a slope of the inner edges of the shelves.
The story is similar for another type of channel with a flange width of 120 mm, a modification with parallel edges, it is also available with a flange height
drawing of channel 12Drawing of channel 12 with parallel edges and flange height 52 mm.
The photo shows a drawing of channel 12 with parallel edges and a shelf height of 52 mm.
(Nobody rated)
Source: http://4ypakabra.ru/ves-shvellera-12/
Channel weights of 12 different brands: tables
Channel 12 with a width between the outer edges of the shelves of 120 mm is a relatively light and very durable element used in many sectors of the economy. It is actively used in machine tool building, mechanical engineering, as supporting structures in columns, as a load-bearing element in floors, etc.
With a relatively small weight of steel channel 12 (slightly more than 10 kg), the load it can withstand is several times greater than that which is permissible for a square pipe of the same weight . This explains the popularity of the widespread use of such beams, as well as the manufacturability, produced in the following types:
- hot rolled on section machines,
- curved on profile bending machines.
Channel 12 is produced in four series , depending on the shape and location of the profile elements relative to each other - with a Y-shaped slope of the internal edges of the shelves, with parallel edges of the shelves, an economical series, a light series.
The production of channels is regulated by the following standards:
- GOST 8240–97 (hot rolled),
- GOST 19425–74 (special),
- GOST 8278–83 (equal flange bent),
- GOST 8281–80 (unequal bent).
Channel(U)
For the manufacture of channels, mainly the following steel grades are used: St3ps, St3sp, as well as low-alloy steel 09G2S. These steels have proven themselves to be excellent, including their reasonable cost, which makes it possible to produce channels with a low selling price.
Thanks to its U-shape and small dimensions, the channel is actively used where it is impossible to use I-beams due to design features or small dimensions into which the I-beam does not fit. Moreover, the strength of the channel is almost as good as the more massive and, accordingly, expensive I-beams.
BrandWeight of 1 meter, kg| 12 (U) | 10,40 |
Channel (P)
In the carriage building and automotive industry, channel bars are actively used for their strength characteristics and low weight. For these industries, special series of channels are also produced, which are marked with the letter “C” after indicating the size of the channel.
In addition, GOST requires that manufacturing accuracy be indicated when marking. determine whether the manufacturer of the product adhered to high or normal accuracy by the designation A, B (high) or C (regular) on the right side of the stamp.
The channel with parallel flange edges differs from the previous series. In it, the planes of the inner edges of the shelves and walls are perpendicular to each other throughout.
The quality of such a channel is of particular importance , since in defective products from a manufacturer that does not comply with GOST requirements, the angle between the flange and the wall may be acute, which will negatively affect the resistance to torsion and lateral loads acting on the channel.
BrandWeight of 1 meter, kgIt is strongly recommended to purchase such rental from a reputable dealer or manufacturer. The table below shows the weight of a linear meter of channel 12 (P).
| 12 (P) | 10,40 |
Channel (L)
The channel, designated after the number by the letter “L”, is a lightweight version of the U-shaped beam . It is also used in a variety of areas:
- roofing frames,
- ceilings of underground structures,
- bridge trusses,
- housing construction, etc.
Due to lower metal consumption, the weight of the 12L channel is less and the price is lower . By using this channel in elements of metal structures with a lower load, but more stringent weight requirements, the customer of the design work saves significantly.
Sometimes, the use of a lightweight version is necessary, because the weight of a linear meter of such a channel is almost two times less and, according to GOST 8240–97, is only 5.02 kg.
BrandWeight of 1 meter, kg| 12 (L) | 5,02 |
Channel(E)
Channel shelves of the “E” series are thinner. Due to the saving of metal, the cost of such rental is also reduced. Where it is intended to use such a channel, the load may be less, then the use of an economical series is advisable.
The ability to withstand heavy loads with a small cross-section, low cost and mass availability has ensured the popularity of the channel in construction. Not a single low-rise or high-rise building project can be completed without the use of this type of rental. U-shaped beams are also used when constructing a foundation, to reinforce and strengthen a concrete structure.
BrandWeight of 1 meter, kg| 12 (E) | 10,24 |
Source: http://stroymetcon.ru/sortament/profilnaya/shvellery/ves/12.html
Channel 12: description, types, size, weight, marking, GOST
First of all, I would like to say in general terms what a channel is. Channels are special metal parts that are very widely used in construction in order to give the greatest strength to frames and structures.
The 12 mm channel is in demand in many types of production:
- In construction for the construction of bridges, columns, etc.
- For mechanical engineering.
- Car manufacturing.
Channel 12 allows not only to give the frame strength and stability, but also to increase the load-bearing load that the frame must withstand. This is how the channel strengthens internal and external walls, and also assembles individual parts of buildings and structures.
Channel 12 technical specifications
The established quality standards of GOST 8240-89 provide for the following product characteristics:
- channel area 12 - 43.1 sq.m / ton of profile;
- workpiece height - 120mm;
- shelf thickness - 7.8mm;
- the specific weight of a channel of 12 linear meters is 10.4 kg with a steel density of 7850 kg/m3;
- product wall thickness - 4.8 mm;
- shelf width - 52mm;
- cross-sectional area - 13.30 cm2;
- R internal rounding, no more than 7.5 mm;
- r shelf rounding - 3mm.
The maximum load on the 12 channel is indicated in the accompanying documentation, but if you wish, you can always request information from the engineering department of the manufacturer.
Channel markings
Rolled metal products have a special index in their name:
- “U” - the product has a slope of the internal edges of the shelves;
- "E" - economical model;
- “P” blank with parallel edges;
- “B” - channels are used in carriage building;
- "C" - special;
- "T" - channels for tractors.
Channel dimensions No. 12
As already written above, the entire range is manufactured in accordance with GOST 8240-97. Therefore, the dimensions are always provided in advance. All this is necessary in order to recreate only a solid structure. But it is always possible to make a custom-made channel, which will be designated with a special letter.
Channel weight 12
Regardless of the fact that the product is made of alloys and has the appropriate strength, the 12-meter channel has a low weight per linear meter. This is an important factor due to which the product is in great demand. The weight of 1 meter of channel is 12 – 10.4 kg.
Channel 12 has a huge range and has different lengths of the product and direction of the edges. Each profile is marked depending on the location of the shelves. For example, channel 12 P has shelves parallel to each other, while channel 12 U has shelves located at an angle.
Features of channel 12
Due to the fact that the channel is manufactured in accordance with GOST, the entire range has many advantages and features. A distinctive feature of channel 12 is the rounding of the flange, which is also prescribed in GOST and has certain standards.
GOST channel 12 is a generally accepted instruction for the presented range. This document must be followed by every company producing this channel. If the channel is made according to all the above documents, then the result is an ideal material that can be used for your purposes.
Each channel has its own quality certificate, which confirms that the product is manufactured in accordance with GOST. Channel 12 is no exception and also has such a document. The quality certificate for the 12-meter channel can be seen in the following photo.
How are channels produced?
In accordance with GOST 8240-97, channel 12 is manufactured at enterprises. The material for the channel is alloys with the addition of structural carbon and low-alloy steel. Such steels are marked st3ps and 09G2S, respectively. The chemical composition of the first is very diverse and includes many different metals. In addition, ferrous metal or aluminum can be used.
The entire range of 12mm channel bars manufactured in accordance with GOST 8240-97 has special designations that indicate the manufacturing method. So, for example:
- C - special channel. GOST does not specify the dimensions of this channel. Often, such an assortment is manufactured according to a special order with certain parameters required by the customer.
- The P-channel is manufactured with shelves parallel to the base.
- U-shelves are located at an angle to the base.
- E-economical option. Manufacturing takes place in accordance with GOST, but less metal is used in the production process.
- L - light profile. Light metals such as aluminum are used for production.
- B - special marking, which indicates that such a channel is intended for automobile and carriage building.
- T-profiles for tractors.
In order to better understand the various channel markings, you can see the following photo.
The entire range of channel manufacturing differs in production methods:
- Hot rolled method.
- Bent or cold rolled.
- Special.
Channel 12 is produced according to option 1, namely hot rolling. All this is specified in GOST 8240-97.
Common parameters:
Channels 12 and 12P have identical parameters with the exception of the flange radius r.
- shelf base height (h): 120 (mm);
- shelf width (b): 52 (mm);
- wall thickness (s): 4.8 (mm);
- shelf thickness (t): 7.8 (mm);
- internal radius (R): 7.5 (mm);
- radius of curvature of the shelf with the slope of the internal edges of the shelves (r): 3 (mm);
- radius of curvature of the shelf with parallel edges of the shelves (r): 4.5 (mm).
Important: the data is valid for hot-rolled steel channels in accordance with GOST 8240-89.
Hot rolled channel 12: range, characteristics
In the production of this type of shaped steel, the following are used:
- carbon steel of ordinary quality (st3 sp/ps) - for structures operated under moderate loads and normal weather conditions;
- low-alloy steel (09G2S) – for metal structures intended for operation at low temperatures and increased loads.
The dimensions of hot-rolled channel are regulated by GOST 8240-97, in accordance with which a profile is produced with the internal edges of the shelves located at a slope of 4-10%, and with parallel internal edges of the shelves of the “P”, “E”, “L” series. The range of slope angles of the internal edges can be tightened at the customer's request.
Table of dimensions and weight of channel 12
| Channel type 12 | Wall height, cm | Shelf width, mm | Wall thickness, mm | Shelf thickness, mm | Weight of 1 m channel 12, kg |
| With a slope of the inner edges of the shelves (U) | 12 | 52 | 4,8 | 7,8 | 10,4 |
| With parallel inner edges of shelves (P) | 12 | 52 | 4,8 | 7,8 | 10,4 |
| Economical, with parallel shelf edges (E) | 12 | 52 | 4,5 | 7,8 | 10,24 |
| Lightweight, with parallel edges of shelves (E) | 12 | 30 | 3,0 | 4,8 | 5,02 |
The profile products of the economy series have a thinner wall, the light series have a smaller width and thickness of the shelf, and wall thickness, compared to the products of the “P” series. The standard length of the rods supplied to the consumer is 2-12 linear meters; by agreement with the customer, it can be increased. When calculating how much a channel weighs, an average steel density of 7.85 kg/dm3 is used.
A hot-rolled channel with a wall height of 120 mm is capable of withstanding fairly high bending and deflection loads. This profile is used in load-bearing structures as the main load-bearing or additional reinforcing element.
Areas of its application: frame construction, production of frames for finishing materials (installation of ventilated facades), strengthening of foundations, installation of fences and stairs, production of non-standard production equipment, mechanical engineering.
Bent channel 12: production features and characteristics
A bent channel has rounded external corners, the same thickness of the wall and flanges, and can be equal or unequal. The production of equal flange profiles is determined by GOST 8278-83, unequal flange profiles - by state standard 8281-80. Unequal-flanged steel has rather limited, highly specialized areas of application. Manufacturing accuracy – normal, increased, high.
Assortment table for equal flange bent channel 12
| Wall height, cm | Shelf width, mm | Wall thickness, mm | Cross-sectional surface area, cm2 | Weight 1 m, kg |
| 12 | 25 | 4 | 6,2 | 4,87 |
| 12 | 50 | 3 | 6,2 | 4,91 |
| 12 | 50 | 4 | 8,2 | 6,44 |
| 12 | 50 | 6 | 11,86 | 9,3 |
| 12 | 60 | 4 | 9,0 | 7,07 |
| 12 | 60 | 5 | 11,09 | 8,71 |
| 12 | 60 | 6 | 13,06 | 10,25 |
| 12 | 70 | 5 | 12,09 | 9,49 |
| 12 | 80 | 4 | 10, | 8,32 |
| 12 | 80 | 5 | 13,09 | 10,28 |
Bent metal profiles are produced on profile bending mills from hot and cold rolled strip blanks. During the bending process, some surface defects are corrected.
In the production of bent channels, in addition to ordinary quality, high-quality structural and low-alloy carbon steels, galvanized blanks and strips of corrosion-resistant steel are used.
Galvanized profiles are used in conditions of high humidity, while stainless steel profiles are used in enterprises that have high requirements for corrosion resistance, hygienic and aesthetic characteristics.
In addition to steel of various grades, aluminum and copper, as well as alloys based on them, are used to produce U-shaped rolled sections. Products made from aluminum alloys are used in structures for which a combination of low specific gravity, corrosion resistance and good strength is important.
Technical requirements for manufacturing - steel grades, strength and quality parameters
In addition to the above characteristics regulated by GOST 8240, for the design and subsequent construction of any channel structures, it is necessary to know its other parameters: the grade of steel from which it is made, strength (physical and mechanical) and other properties, including various indicators of workmanship. All this information should be sought in other GOSTs - technical specification standards.
In total, GOST 8240 hot-rolled products are subject to not one, but seven technical specification standards - one for each specific area of practical application and method of using these channels.
And, of course, in each of these standards, all of the above-mentioned characteristics (strength, steel grade, etc.) are strictly defined and radically different from those regulated by the other six GOST technical conditions.
Moreover, this becomes obvious even after simply reading the list of all technical specification standards for GOST 8240 channels (including profile No. 12). Here is the list of GOSTs:
- 535-2005 - this standard applies to steel products for general and specialized use, made from carbon steel of ordinary quality;
- 19281-2014 – applies to high-strength steel products, which are made from high-quality unalloyed and low-alloy steels and are used for assembly or construction of various structures;
- 27772-2015 – for rental, which is used for the construction or assembly of steel building and other structures, as well as used for many other purposes;
- R 52927-2015 and 5521-93 – for steel metal products used for the construction of ships, as well as a variety of marine and river structures and structures for various purposes and climatic conditions;
- R 55374-2012 and 6713-91 – for steel products intended for the construction of bridges and the assembly of their various structures.
Source: https://building-ooo.ru/uncategorized/shveller-12-opisanievidyrazmervesmarkirovkagost/.html
Channel 12 - characteristics
Channel 12 is a popular type of rolled product, having a U-shaped cross section and a wall height of 120 mm. According to the manufacturing method, a distinction is made between hot-rolled and bent profiles.
The first is characterized by clear outer corners, increased strength due to slight thickening in the inner corners, possible surface defects and low dimensional accuracy.
The second type of rolled products has rounded outer corners, the same width of the wall and flange, and acceptable surface quality, thanks to the correction of defects during bending on mills.
Channel weight
The current construction infrastructure uses a variety of building materials. But structures made of metal of massive dimensions are more widely used. The reason for this is the practical impossibility of erecting tall structures and buildings in general.
The characteristic shape of metal materials, “borrowed” from the letter “P,” ensures rigid and durable installation under the general pressure of loads and contributes to the perception of serious loads.
The channel has a unique profile that excellently resists various deformations and makes it possible to reliably absorb bending forces. Metal products have proven themselves to be successfully used in structures consisting of reinforced concrete foundations and perform the function of a reinforcing element.
Below are tables indicating the specific gravity of 1 linear meter in kilograms.
Marking
Depending on the type of metal product, there are different markings. Such markings are recognized by corresponding letters and numbers. For example, by means of marking numbers, the distances of the edges are determined. At the same time, the most common sizes are 10, 12, 20, 40.
Note: methods for making channels can be revealed by appearance. In the case where the shelf and base are located at an acute angle, the production is hot-rolled. In the case of a rounded bend, cold origin production.
Letter markings:
- “P” – with the presence of parallel edges of the shelves;
- “U” – with the presence of certain slopes in the inner edges of the shelves;
- “S” – special;
- “L” – light, with parallel edges of the shelves;
- “E” - economical, with parallel edges of shelves.
Also, there are letter designations that indicate the dimensions of metal products; they can be found in the tables above.
These include:
- t – flange thickness;
- s – wall thickness;
- h – height, distance of the outer edges of the shelves;
- b is the width of the shelves;
- R – radius of curvature from the inside;
- r – radius of shelf curves.
Characteristic
To identify the characteristics and their inherent features, attention is paid to existing markings. Channels are mainly characterized by markings V-SH-T .
To form a figurative representation and example of identifying the characteristics of a channel, the features of a bent channel, which find their application in the current construction industry, will be considered.
- Markings characterizing the features of the channel:
- "B" is the height . Through this, the gap between the channel flanges is also determined. In the case of a bent channel, the height is a minimum of 25 mm to 310 mm;
- "W" is the width . Through this, the dimensions of the channel flanges are determined. For a bent channel, the minimum width is 26 mm up to a maximum of 100 mm;
- "T" is the thickness. The definition of steel thickness is given. The thickness of the bent channel steel material varies from 2 to 6 mm.
In addition, the characteristic, standard and installed length of the channel can reach from 2 - 3 to 11.8 - 12 meters.
Special attention is paid to the characteristics that determine the presence of weight, levels of load tolerance, and flexibility for installation.
The priorities of a bent channel consist of the following:
- lightest weight;
- tolerance of significant axial loads;
- tolerance of loads acting on bending;
- applicability in metal structures without the use of welding during installation.
GOST standards
The established standards for the production of channels, the functions they perform, based on the nature of the loads and purpose, are provided for by GOST:
- Steel channels , hot-rolled, manufactured according to GOST 8240-97 (outdated-8240-89): – GOST 8240-97, series-U, – GOST 8240-97, series-P, – GOST 8240-97, series-E, – GOST 8240-97, series-E, – GOST 8240-97, series-C.
- Bent channels, equal-flange according to GOST 8278-83: – bent channels formed using carbon boiling and semi-mild steel, – bent channels from carbon mild and low-alloy steel, – bent channels from carbon mild and low-alloy steel.
- Uneven-flanged bent channels GOST 8281-80: – bent channels from carbon boiling and semi-calm steel, – bent channels from carbon calm and low-alloy steel.
Where is it used?
At first glance, everything is simple! The scope of application is clear, but, nevertheless, there are non-standard solutions.
If you use a perforated metal product, then installation can be carried out without the use of welding, which is reflected in the accelerated process of installation productivity.
Channels are used to form racks for warehouses and have a guiding function for devices for lifting loads.
It is used in the construction of ramps for roller trolleys, laying utility networks, and carrying out repair work on carriages and various types of mechanical engineering.
How is it produced?
The greatest preference of specialists is given to bent channels, which are universal products made of high-grade steel with the highest strength. It should be noted that high resistance to temperature changes and withstanding various types of heavy loads are inherent in this type of metal material.
Note: despite the highest level of strength and reliability, the bent series type of metal material has the lowest prices and is lighter.
Low-alloy, hot-rolled and also cold-rolled steels can be used as the basis for the manufacture of channels. For example, production using the hot-rolled methodology is recommended in the manufacture of channels and other metal materials with simple shapes.
Advantages of hot-rolled production:
- high level of reliability;
- strength;
- longer period of use;
- flexibility for processing and welding work;
- resistance to various climatic influences.
The cold-rolled method is used as the basis for the production of bent steel channels, resulting in increased stability in shape changes. And, regarding low-alloy steel, they are more expensive, but the level of reliability shows a high bar. The reason for this is the presence of impurities in the metal composition, which increase the levels of their safe use.
Necessary actions:
Before production of the material begins, the steel is subject to inspection to identify various types of damage and contamination. At the same time, you need to pay attention to the absence of nicks, delamination and tightened edges on the end parts of the material.
Note: based on GOST, the presence of such defects in raw materials as rolled-in bubbles, imprints and risks, which, in fact, do not affect the quality of the product, is acceptable.
The corresponding product profiles are produced using special equipment, and the entire process from material receipt to product preparation takes a series of cycles. The general technological process of work planned for implementation will depend on the implementation of profiling.
Considering the production of profiles using machines, in case of incorrect operation of the shaft calibration, productivity and product quality will decrease.
In this case, the following types of defects are distinguished:
- the presence of sickling;
- waviness;
- helicality;
- molding distortions.
What is the channel made of?
Channels, as usual, are classified depending on the types of metal used. Steels are used to a greater extent, divided into structural and carbon types.
Thus, in the formation of metal products with equal flanges, structural steels with the lowest carbon concentration are consumed. In the manufacture of unequal metal products, carbon steel is consumed.
In the production process of hot-rolled metal materials, calm and semi-quiet grades are used. Distinctive characteristics of the two brands are different contents of carbon and manganese. In the case of the highest carbon content, the level of strength increases, but ductility decreases.
- “ KP” – boiling steel, treated once to remove oxygen;
- “PS” – semi-quiet steel, double-treated;
- “C” – calm steel, triple processed.
Depending on the number of treatments, the properties of steel are subject to greater changes. The stability and moderation of metal grains depends on the number of treatments to remove oxygen from the metal.
Note: if you need more ductile steel, it is recommended to choose a material from boiling steel. If there is a need to achieve greater structural strength, it is recommended to choose a material from mild steel.
Along with steel, non-ferrous metals are also successfully used in the production process of channels, and channels are also made from aluminum.
The production of aluminum channels is reproduced by complying with the requirements for the presence of a solid profile with a U-shaped section. In such channels there is a complete absence of hollow spaces and layers of polymer powder or anodic oxide sputtering.
Varieties in sizes and shapes
The channel industry is implemented taking into account compliance with the established dimensions, which come in dozens of items. In determining the distances that exist between the outer edges of the channels, it is necessary to rely on the number designations of the metal material. For example , channels of the 10-P series have gaps of opposite flanges of 100 millimeters.
The most common are the following:
- Channels taking into account standards U, C;
- Channels taking into account the standards P, E, L.
Formation of metal products, observing dimensions in length from 2 to 12 m:
- measured length;
- measured length with unmeasured length in an amount not exceeding 5% of the lot weight;
- multiple measured length;
- multiple measured length with unmeasured number, not exceeding 5% of the mass of the batch;
- unmeasured length;
- limited length within unmeasured.
Assortments
The choice or use of a certain type of metal material is determined by the nature of its use. There is a simple rule by which it is recommended to select the appropriate type of channel.
This is as follows: in the event of a discrepancy and difference between the composite data of the channel, which is considered according to the assortment, and the requirements for the channel you are considering, less than 5%, the choice according to the assortment is made correctly. If there is a difference of more than 5%, you must select the next number marking of the assortment.
In essence, an assortment is a set of passports for metal products, on the basis of which it will be possible to identify the necessary priorities.
- Assortment of channels with the presence of certain slopes in the inner edges of the shelves (U): the maximum presence of slope should not exceed 10%.
- Channel assortment with the presence of parallel flange edges (P).
- An assortment of metal products of an economical series, with the presence of parallel edges of the shelves (E).
- Assortment of light channels (L).
- Assortment of special channels (C).
The price of a channel largely depends on its size.
Source: https://krovlya777.ru/stroika/ves-shvellera.html
Channel 12: Weight per linear meter and dimensions of typical products
Technical parameters of channels. Information about sizes and GOST standards.
Modern industry is in dire need of high-quality rolled metal, without which it is simply impossible to imagine carrying out a wide range of work in a wide variety of sectors of human activity.
There are many different variations of rolled metal on the market, a special place among which is occupied by 12p channel - a universal material with excellent technical data.
It is about the features of channels, their characteristics, advantages and use cases that we will talk in this material.
Description and properties
A metal channel is a type of rolled metal. The material has a U-shaped cross-section and is made of high quality steel. The manufacturing process in the vast majority of cases is carried out using hot rolling technology on specialized rolling equipment. However, it is possible to manufacture products using the cold rolling method or on special roll forming mills.
Depending on the accuracy of rolling the material, channel 12u can be produced with normal or increased accuracy (marked “B” and “A”, respectively). Thanks to its unique shape, the product significantly improves the strength of the structure being built, being second only to I-beams in this indicator.
All parameters related to the production of the material, its range and operating rules are regulated by the following GOSTs: 8281-80, 8240-97, 19425-74, 8278-83, 8240-97, 5267.1-90, in which, among other things, you can find out what load a particular type of material can withstand.
Channel 12u is available in lengths from 2 to 12 meters, although it is also possible to manufacture a product of greater length by prior agreement with the customer. Moreover, its weight per 1 linear meter is 10.4 kg.
It is worth noting that this type of channel is distinguished by excellent load-bearing capacity, which allows for significant savings not only in individual production areas, but also on the entire structure as a whole.
In addition, the very small mass of the product allows you to safely use it even in areas with problematic soils.
Material characteristics
Today, products have a fairly wide and varied range; manufacturers offer many standard sizes, which makes it possible to easily select the required option for any production needs and conditions. All standard sizes are designated by numbers indicating the height of the profile, which can vary in the range of 50-400 mm. So, for example, a 12p channel has a profile height of 120 mm, 35 - 350 mm, etc.
It is also impossible not to note another equally important parameter - the width of the shelf. Based on the provisions of GOST, its dimensions can be 32-115 mm.
Depending on the configuration of the shelves, the product can be equal-shelf or unequal-shelf.
As for the slope of the edges, the following range is available on the market today:
- L – lightweight version with parallel edges;
- P – a product with parallel edges;
- C – a separate category of special channels;
- U – channel, the slope of the edges of which does not exceed 4-10%;
- E is an economical option with parallel edges.
Based on its length, the 12p channel can be represented by the following variations:
- Measured;
- Unmeasured;
- Multiple of measured;
- Limited, but not more than the specified length;
- Multiple of measured (up to 5% of the total mass of the entire batch).
Conclusion
In conclusion, it is worth saying that modern channels, and channel 12u is no exception - this is an unusually strong, reliable, durable and versatile material that shows excellent results regardless of its scope of use and operating conditions. At the same time, its price is at a very acceptable level, which undoubtedly has a positive effect on both the popularity of the product and its demand in the realities of the domestic building materials market.
Source: https://the-master.ru/shvellery/razmery-i-harakteristiki-shvellera-12
Channel 12U - all characteristics and prices
Channel 12U is a hot-rolled channel with a wall height of 10 cm, the letter “U” in the name tells us about the profile of the channel, which has a slope on the inside, as shown in the figure. In other words, the internal angle of the P channel is equal to 90 degrees, while the U channel has more than 90, but within the limits of GOST. This is the main difference between 12U and 12P.
This difference leads to a change in characteristics; the bending rigidity of the U profile is lower than that of the P. The P and U channel have the same mass with this difference. U - channel, an earlier design, less common. Perhaps it is produced for specific conditions and due to the presence of old equipment that has not exhausted its service life.
Whereas P is a channel, it is much more convenient for installation reasons. Thanks to the parallelism of the shelves, bolted connections are much easier to make.
The U&P channel is the most popular in strengthening concrete structures. Serves as a structural element for many industrial structures.
Structures are assembled from channel bars, mounted together with bolts and welding.
Dimensions and characteristics of channel 12U
- Weight of 1 meter - 10.4 kg
- Channel height - 120 mm
- Shelf width - 52 mm
- Shelf thickness - 7.8 mm
- Wall thickness - 4.8 mm
- Corner thickness - 7.5 mm (curvature radius)
- Cross-sectional area - 13.3 cm2
- Linear meters per ton - 96
The mass of a linear meter is calculated using the cross-sectional area and density of steel 7.85 g/cm3 or 7850 kg per cubic meter.
Accuracy is divided into high, increased and normal.
- Identified by letters
- A (high)
- B (increased)
- B (regular)
For example: 10aP, 24bU, 12aU
Strength gradation into normal and increased.
Permissible dimensional deviations (according to GOST 8240-97)
- Height +- 2 mm
- Shelf width +- 2 mm
- Shelf thickness -0.5 mm
- Wall thickness +- 0.5 mm
- The deflection of the channel wall is no more than 1 mm. The wall is “h” in the diagram above. It should be straight, not stick out to the left or right within the specified limit.
- Curvature is no more than 0.2% of the channel length.
- Skewing the shelves - tipping them inward or outward, for different accuracies (a, b, c):
Deviations in the “U” channel in terms of wall thickness and radius of curvature are not controlled. And positive deviations in flange thickness are controlled by the maximum weight of the channel.
Weight deviations should not exceed +-4% for a batch and +-6% for a unit.
The slope of the internal edges of the shelves should be within 4-10%. But by agreement with the manufacturer, it is possible to limit the slope to 5% for a channel with a wall height “h” of up to 300 mm. And up to 8% for channels greater than this “h” value. This is acceptable according to GOST 8240-97.
Deviations in length dimensions
- The length of the channel is 12U within 2 - 12 meters. But in agreement with the manufacturer, we can also produce ones longer than 12 m. Deviations in length for a channel from 2 to 8 meters are +- 40 mm.
- For lengths over 8 meters no more than 100 mm.
The channel must be cut so that the cut bevel does not protrude beyond the required length limit.
Material of manufacture
- Manufacturers often have the following made from steel:
- 09G2S
- 09G2S-15
- 09G2S-14
- St3
- S255
- S355-1
- S345
- 3sp
- 3sp/ps5
- 3ps5/sp5
Channel area
For various aspects, such as paint consumption, it is necessary to know what the area of the product is.
The task is not trivial, since the shape is not easy to accurately calculate. For the purposes of the answer, work has been done.
In 1 linear meter of channel 12U - 0.451 square meters (m2)
- For convenience, the number of m2 per unit of product of different lengths is calculated
- At 2 meters - 0.902
- At 3 meters - 1.353
- At 6 meters - 2.706
- At 9 meters - 4.059
- At 12 meters - 5.412
How many m2 in a ton
- In 1 ton of channel 12U - 43.3 square meters
- Explanation:
- First we find out how many meters are in a ton. To do this, divide a ton by 10.4 (the weight of 1 meter is 12U) and we get the number 96. Exactly so many meters of 12U channel in one ton.
- Knowing that 1 meter has an area of 0.451 m2, we multiply by the number of meters and get 43.3 m2 per ton.
Paint consumption
- It varies greatly depending on the color, application tool and type of paint.
- Approximate difference in paint consumption per 1m2:
- Water – 155 g
- Enamel – 135 g
- Black color – 70 g
- White color - up to 125 g
General standards for painting metal usually range from 100-150 g per m2. More economical with a spray gun. The hiding power of black paint is higher, because in order to achieve a white coating of iron, you need to use more paint, otherwise it will not be painted a good white color.
Approximate average prices
A ton costs - from 36 to 62 thousand
The cost of 1 meter of channel - 380 - 645 rubles
- The cost per linear meter is in theory, obtained by calculating the footage per ton.
- It is calculated like this:
- There are 96 meters in a ton of 12U channel, we divide the cost of a ton by 96, we get the above amounts for 1 linear meter. However, at what price it will be sold at retail, only the retailer himself can say.
The study revealed that prices are the same regardless of the footage or metal. The peak prices were observed in May 2018, then the average was 53 thousand. The lowest in the recent past was at the beginning of 2016, then the average price was 29 thousand per ton. There is no seasonality in the cost. Sometimes the price varies significantly depending on the length.
It can be added that a decrease in prices in 2019-2021 may occur due to the risk of recession in the economy. Which entails a decrease in demand, a contraction of the economy and, accordingly, a fall in prices.
On average, the price for a channel made of steel 09G2S-12 is higher. Not always, but often by 10% than for a channel made of other steels. The price is usually lower for popular channels made of St3, 3sp/ps5 steels.
GOST standard
You can find those manufactured according to GOST 82783, 27772-83. Although for the most part they are almost always made from 8240 different years (8240-89, 8240-97)
GOST 19281-89. Rolled products made of high strength steel.
Characteristics of foreign analogues
Analogues are often no different. The object is a clear product that has been manufactured for many years and is quite well studied and standardized. The matter remains with compliance with technology and process control. Which depends more on the integrity of the manufacturer.
Source: https://gauge.tk/shveller-12u-vse-harakteristiki-i-tseny/
Linear weight of channel - calculation and dependence
Modern science distinguishes between concepts such as weight and mass. This happens primarily because weight is a strength characteristic, i.e. a measure of impact on a support or suspension. Mass, on the contrary, is a measure of the inertia of a body. We are writing all this so that while reading this article you will not have any questions about what is the difference between the weight of a channel and its mass. For simplicity, we consider here only those situations where these two parameters are equivalent.
In the case of profiles, the mass depends on the following parameters:
- Forms;
- Metal;
- Sizes.
Shape and dimensions
Speaking about the shape, it is necessary to clarify that there are several types of profiles, for example, classic and perforated.
Metal structures can be made not only from steel, therefore, when talking about other alloys, this will be indicated separately. We are clarifying this point, since the weight of channel 12 made of aluminum will be several times lower than when steel is used.
Weight of channel models
In the usual case, the mass of a profile is calculated quite simply, but only if its shape is simple. Those. We are considering an equal-flanged product, the internal edges of the walls of which are located parallel to each other.
There are also unequal profiles, for which the calculation of mass is somewhat more complicated, but the most difficult option is the inclined edges of the internal walls.
This product turns out to be very massive, but this is compensated by increased strength due to the large volume of metal.
The weight of channel 10 can vary from 3 to 12.7 kg depending on its dimensions. In this case, such a large spread is ensured by different wall heights. It starts at 40 mm and can reach 160 mm, resulting in a very deep profile. The thickness also does not remain constant and varies from 2 to 6 mm.
Remember: even at the stage of designing a house, choose the channel size, shape and material in advance, since they are important for the project as a whole.
If we consider all the numbers of the bent profile, then we can say that the channel with the h:b:s ratio of 25:26:2 mm has the minimum mass. The weight of this profile barely exceeds 1 kg. On the other side of the size line there is number 41, which can be presented in the form of a similar ratio of 410:65:6 mm and the weight of just one meter will already be 24.38 kg.
A higher channel number does not mean that the product will be heavier. The weight of channel 20 will be less than that of number 21 only if the dimensions of the walls and the thickness of the product are the same, otherwise even number 20 will be able to bypass the 21 profile.
The mass of hot-rolled profiles starts from 4.84 kg for the 5U product, the dimensions of which can be represented as 50:32:4.4 mm, and the length is 1 m. With a wall height of 40 mm and the presence of a slope of the internal edges, the weight is 48.3 kg per 1 m This is due to the fact that the metal consumption for such a channel is very large, and its dimensions are 400:115:8 mm.
Metal
Usually, when they talk about the tabular value of the mass or weight of profiles, examples of which we gave in the previous paragraph, they mean some abstract steel having a density of 7.85 units and a product length of 1 m. In reality, the situation is somewhat different, since the most different alloys.
One of the interesting options for various unloaded structures is aluminum. This is a fairly common silvery-white metal today, the density of which is 2.7 units. Obviously, the weight of channel 14 made of such material will be much lighter than steel; another thing is that creating such large structures from aluminum is not always advisable.
As a structural material, aluminum is very attractive not only because of its low weight, but also because it can be easily stamped and does not require any additional protection. Of course, during the technological process, the production of profiles from this metal is accompanied by various procedures that make it possible to slightly increase the strength of the product.
Steel channels
On the other hand, steel is used even more often than aluminum, and the most common options are carbon and low-alloy varieties. The quality of carbon steels is determined by the presence of impurities in them. The most dangerous are sulfur and phosphorus. Sulfur causes the metal to become red brittle, and phosphorus causes brittleness. For ordinary steel, these components cannot exceed 0.05%.
Within such a group, the mass of 1 m3 changes insignificantly, so the influence of impurities on the weight of the channel can be neglected. In this case, the metal marking “St” is used. A higher quality variety already has the designation “Steel”, and the S and P content is less than 0.035%. There are two more varieties of such alloys, high quality and special quality, in which the proportion of harmful impurities is less than 0.025% and 0.015%, respectively.
For high quality steel, the marking “A” is used at the end of the mark, and for higher quality, “W”.
The type of steel affects the weight of a meter of profile. For example, the weight of a channel 16 made of carbon steel will be different from the result obtained when using an alloy alloy.
Alloy steel is an alloy that, in addition to basic impurities, contains a number of elements that are introduced in certain quantities. These are alloying additives, the role of which is chosen from chromium, copper, bound nitrogen, nickel or vanadium. All alloy steels are divided into 3 categories:
- low alloy;
- medium alloyed;
- highly alloyed.
In the first case, we are talking about only 2.5% impurities, in the second they can be up to 10%, and highly alloyed compounds often have 50% impurities.
To summarize, we note that we have considered most of the factors that influence the weight of the channel. It should also be noted that when weighing a batch, it will be necessary to take into account small deviations caused by various errors, which is clearly stated in the relevant state standard.
Source: http://RoofMontag.ru/pogonnyj-ves-shvellera-raschet-i-zavisimost.html
Channel weight 12u per meter
Channel 12 is a popular type of rolled product, having a U-shaped cross section and a wall height of 120 mm. According to the manufacturing method, a distinction is made between hot-rolled and bent profiles.
The first is characterized by clear outer corners, increased strength due to slight thickening in the inner corners, possible surface defects and low dimensional accuracy.
The second type of rolled products has rounded outer corners, the same width of the wall and flange, and acceptable surface quality, thanks to the correction of defects during bending on mills.
