Channel assortment: the ratio of characteristics as a guarantee of reliability

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The construction of load-bearing structures involves the use of reliable materials. It is to this list that U-shaped steel channels belong. In the manufacture of profiles, various technologies are used and different types of steel are used. The material is classified according to several characteristics, and their relationship determines such a thing as the assortment of channels. This article is devoted to this topic.

Channels are most widely used in construction, manufacturing and automotive industries

What is the difference between channel U and P?

What is the difference between channel U and P? Today it is no longer possible to imagine the construction or production of metal products or structures without shaped metal products.
This rental includes one of the most reliable profiles - channel. It is very popular where you need to add reliability for various designs. It is used to increase the strength of concrete.

This hot-rolled steel is used mainly in the field of construction. The channel is used in the construction of frames, industrial and residential structures, wiring of communications and to increase the strength of main structures. It is found as a separate profile on various sites, the foundations of building structures. The product is also used in the installation of bridges, finishing structures, and erecting industrial and residential buildings. What is the difference between channel U and P? Now it is impossible to imagine the construction of load-bearing columns without it. This product, with the help of its shape, can give even more strength and durability to the structure. Shaped products are able to withstand enormous axial loads and withstand additional bending forces. The area of ​​use depends on its type, size and steel grade. Possessing the significant load-bearing capabilities of this product, it is used in almost all areas of industrial production.

“Important: in terms of resistance to downward loads, the channel is inferior only to an I-beam”

• Industry; • Automotive industry; • Car manufacturing; • Shipbuilding;

Due to its technical parameters, the channel is used in machine tool construction. Since it has excellent reliability, it can withstand vibration and high loads. What is the difference between channel U and P? They are used as part of the frame and attachments for units.

The economic benefit is that this product is lightweight and has excellent strength and resistance to axial pressure and bending. This factor makes it possible to build lightweight structures. The metal profile gives excellent fur. Processable and simply welded during assembly. What is the difference between channel U and P? The ease of installation makes for easy transportation.

The use of shaped steel increases the service life of the structure due to the resistance of the material to all loads. Ease of installation of structures at height, the low weight of the product allows you to lift large batches of profiles upward. Strictness in consistent dimensions allows use with virtually no alignment or straightening.

The product has a cross-sectional shape that allows it to withstand heavy loads over a long period of time. The profile withstands the influence of moisture, is unpretentious to mechanical stress and is not prone to deformation, because there are no weak points in the profile that are prone to breaking the section.

Markings and types

According to the manufacturing method, the channel is divided into several divisions:

— Hot rolled (I produce using the hot rolling technique); — Bent (produced using the cold rolling method);

These types of profiles are used in a variety of areas due to the difference in technical characteristics. In appearance they are distinguished by the difference in angles. In a bent channel they are rounded. In addition, all products are divided by size, the regulations of which are described in GOST. There are three more accuracy groups for product release:

"A" - high-precision; "B" - increased; "B" - normal;

The selection of a channel for certain buildings is determined by its length from the first flange to the second. According to technical regulations, this length can be from 32 to 115 millimeters. They are also divided by its length; as a rule, it ranges from 4 to 12 meters. The height of the shelf is usually 5 – 40 centimeters.

Shaped products and hot-rolled channels are divided into series:

1. “P” - the edges are parallel to each other; 2. “U” - edges with a slope; 3. “L” edges are parallel, but the product belongs to the light series; 4. “S” - the abbreviation means special channel;

Method and material for production

The product is produced in accordance with GOST 8240; the initial material for the production of rolled products is low-carbon steel, high-carbon steel and structural steel. They can also produce using steel with alloying components; the selection of steel is determined by the conditions for the technical parameters of the channel. When manufacturing a product, the workpiece is heated to a certain temperature and sent to a special rolling mill. In this installation, the process of rolling steel with rotating rollers takes place. The central part of the workpiece is the first to be processed, it becomes similar to the letter M. Then it is adjusted to size and fed to the unit for calibration. Then it is adjusted to the exact dimensions. Despite the simple production process, hot rolled products have high productivity and excellent quality. During the manufacture of the profile, heat treatment also occurs, a process in which recrystallization occurs in the crystal lattice of the steel. After annealing, this allows the internal stress to be reduced.

Advantages and disadvantages

One of the main advantages is the product parameters, thanks to which it is used wherever excellent rigidity characteristics are required. High probability of withstanding severe loads on the profile. Resistant to distortion and mechanical damage. Also highly resistant to corrosion. Among the disadvantages, poor susceptibility to welding should be noted.

What is the difference between channel U and P? The main difference is its shape, size and slope of the edges. P has maintained edges at an angle of 90 degrees, U has internally inclined edges.

Main features and differences between channels “U” and “P”

Channel

- This is a type of shaped metal product made from steel using special equipment. A distinctive feature of this profile is its U-shaped cross-section. The product is in demand in many areas of industry and construction.

Products are produced in two ways:

hot rolled (hot rolled channel);

cold rolled (rolled channel).

These types of profiles can be visually distinguished by the difference in the angles of the edges: rounded for the bent version and straight for the hot-rolled version.

In addition, bent steel channels are divided into equal-flange and different-flange options. And hot-rolled products are divided into several series depending on the type of edges:

“P” – the edges are parallel to each other;

“U” – the internal edges have a slope;

“L” – light series with parallel edges;

“C” – special channel;

"E" - economical series.

The range of channels includes products of various configurations; all features are indicated on the labeling.

There are three classes of products with varying degrees of strength:

B – increased accuracy;

Technical characteristics developed by Gosstandart:

The height of the shelf (a key marking parameter) ranges from 5 to 40 cm.

The distance between the edges (profile width) varies between 32 and 115 mm.

The wall thickness is from 4.4 to 8 mm, and the shelf thickness is from 7 to 13.5 mm.

The product itself can have a length from 4 to 12 m (more only by agreement between the manufacturer and the buyer).

The theoretical weight of one linear meter of a product is calculated in kilograms: from 4.84 to 48.3.

Note! The marking on the finished product has a digital and letter designation. The number indicates the size, which corresponds to the distance between the edges of the channel. And the letter indicates the type of profile (the angle of inclination at which the shelves are located).

Conventions in channel markings - how to understand them?

And since the main purpose of the channel is to withstand loads, from its markings it is first necessary to find out the parameters that will allow this load to be calculated, namely, the composition of the steel, its strength, rolling quality, and so on.

What can you learn from the labeling?

For example, before us is a package of hot-rolled channels, on which it is written: 30P-V GOST 8240-97/St3sp4-1 GOST 535-88

This means that we have a 30P channel - that is, with parallel edges and a section height of 30 cm. The letter B indicates the usual rolling accuracy B, made of steel St3, fourth category, first group.

The same channel, but only made of steel 09G2S with increased rolling precision will receive the designation 30P-B GOST 8240-97/345 GOST 19281-89

, in which 345 will mean the strength of steel corresponding to grade 09G2S.

But in the marking A 300x80x6 B GOST 8278-83/2-St3sp GOST 11474-76

the letter A will indicate high accuracy of profiling of a steel blank (strips) from the second category of steel St3sp, from which a bent equal-flange channel with dimensions of 300x80x6 is made (where 300 mm is the height of the section of the product, 80 mm is the width of the shelves, and 6 mm is the thickness of the shelves and walls)

Differences between “U” and “P” type channels

The key difference between the “U” and “P” types, as already described above, lies in the structural features of the edges of the shelves.

Products from the “U” series:

have a smooth slope (4-10%) in the inner corners;

The thickness of the flanges along the section is non-uniform.

Products from the “P” series:

the edges are kept at an angle of 90 degrees;

The thickness of the shelves is the same throughout the entire section.

But at the same time, the weight per linear meter, cross-sectional area and other characteristics are the same in both cases.

The choice of the appropriate size and type of channel depends on the purpose of the potential structure, as well as on the expected level of loads that it will experience during operation

“U” type channel was considered standard

, its production began much earlier than
"P"
. This product is used as a supporting element in structures, and the peculiarity of its structure in the form of a slope allows it to evenly distribute the load.

Channel "P"

Ideal for mounting structures with fastenings. It is also convenient for mechanisms with moving elements and bolted connections, since the smooth edges of the shelves provide reliable grip.

In addition, the bending rigidity under high loads of this type of channel is an order of magnitude higher than that of the variety marked “U”

. But both types withstand pressure on the walls equally well.

What common

In addition to the fact that both profiles belong to the same type of product, there are many common features between them. For example, both types of channels are made from the same steels under similar production conditions. Related to both types of construction is the scope of their application: construction.

Both brands of products are used to increase the strength of erected structures. The presence of the main “jumper” in this case can also be considered their common feature.

Scope of application

In the construction industry, channels have gained significant popularity due to the safety, strength and reliability of the structure. the main task

This type of rolled metal consists of forming a strong support or frame that provides support for all components of the object being built.

The special shape of the profile section not only gives additional strength to the structure, but also has reliable axial bending, allowing it to withstand long-term high loads in any direction. The channel is also highly resistant to moisture, corrosion, vibration and mechanical damage, because there are no weak points in the body of the product that could cause a section failure.

Among other things, the low level of manganese and carbon content in the steel allows the finished product to be frost-resistant, which increases the service life of the structure. These and other positive characteristics make this type of rental almost irreplaceable.

In addition to construction, this type of shaped metal is used in many other areas:

in the architectural and decorative fields.

Channels are necessary for creating all kinds of structures: large-sized bridge structures, load-bearing columns, frames, foundations, roof purlins, ramps, as well as industrial buildings and residential buildings.

The size of the channel is selected by a specialist strictly for the potential object. Calculations are carried out, the characteristics of the product are compared with the data of the standard version. If the differences are less than 5%, then the number is considered suitable. If the resulting value exceeds the threshold of 5%, then the next number is selected.

The low weight of the product allows the construction of lightweight structures, which is economically beneficial. This type of profile lends itself well to machining and welding. In addition, the straight surfaces of the edges fit perfectly together, which simplifies the installation process and allows you to build objects of any shape. Therefore, the channel type is from the “P”

is more versatile.
But for the manufacture of structures intended to operate under constant heavy loads (for example, as a supporting element of a structure), it is better to use products with inclined internal edges. In addition, the “U”
has an advantage in inertial characteristics.

Only a specialist can correctly calculate the volume of materials and correctly select the required type of channel and its number, depending on the purpose of the future object. Incorrect specifications can negatively affect the quality and reliability of the final design.

The use of this type of shaped steel significantly increases the service life of the structure due to the material’s immunity to loads and external influences. Low weight and ease of installation of structures at high altitudes make it possible to transport large quantities of channel upwards. In addition, the products require virtually no leveling or straightening due to their clear shape and precise dimensions.

Areas of use of bent channel

The strength characteristics of U-shaped products obtained by bending are inferior to similar parameters of hot-rolled products. Therefore, a bent channel is not used in the construction of load-bearing elements planned for operation under conditions of severe loads.

In what situations is a bent channel used:

• In steel frames as additional reinforcing parts.
• In activities for the reconstruction of residential and industrial facilities. Such products reduce the load on the foundation.
• In finishing works. For example, to create partitions in residential buildings, offices, industrial premises.
• In the production of frame structures in automobile and carriage building. Most often - for the manufacture of load-bearing frames of trucks, construction and road equipment.

The channel type and its number are determined only based on the results of calculations made by a specialist. An incorrect choice of dimensional and strength characteristics can cause a decrease in the reliability of the structure.

What is the difference between channels “U” and “P”

1. Characteristics, classification and differences between channels
2. Channel according to GOST
3. Popular types of products (channel and what are the differences)
4. Scope of application of the channel (what are the differences between channel and channel)

What is a channel? A channel is a small metal object, the cross section of which forms the letter “P”. The cross section of the wall is a jumper, and the legs are the letter “P”. The main purpose is to support the support mechanism in the building, in the production of metal structures in the field of construction and industrial production. Channel and what are the differences, how to distinguish them and what they are used for, let's take a closer look.

Channel p and u what are the differences

The design of the product allows for high strength to withstand vertical loads.

An approximate method for calculating the load on a channel

To make the calculation you need to do the following:

-First, determine the total load that will act on the beam - and multiply it by the standard safety factor for loads.

-Multiply the result obtained by the pitch of the beams (in this case this applies to channels).

Next, you need to calculate the maximum bending moment.

All data for the channel is taken according to GOST.

The formula is as follows: the bending moment Mmax will be equal to the design load multiplied by the length of the channel squared. The unit of measurement is kiloNewtons per meter. (1 kNm = 102 kgcm)

Then proceed to calculate the required moment of resistance of the beam.

The formula is as follows: the moment of resistance Wtr will be equal to Mmax, which is multiplied by the operating conditions coefficients and divided by 1.12 (this is a coefficient for taking into account plastic deformations).

Characteristics, classification and differences between channels

The channel is made by rolling metal blanks; special professional machines are used for this. Only high-quality steel is used to manufacture products. They are divided into special types:

• for carriage building;
• for the automotive industrial complex;
• ordinary.

According to their strength class they are divided into:

• high class A;
• increased accuracy class B;
• regular class B.

According to the manufacturing method, the product is divided into:

• hot rolled steel;
• bent steel equal flanges;
• unequal bent steel;
• steel special.

Depending on the precise rolling, the product is distinguished:

• U - with a slope along the inner edge of the shelf;
• P – parallel edge of the shelves;
• L – parallel shelf, light series;
• S – special.

Numbers, letters and GOSTs

According to the production method, the channel can be bent or hot-rolled. It is easy to distinguish them even for a non-specialist - a hot-rolled channel has a clearly defined edge, while a bent channel it will be somewhat rounded. Other features of various types of channel are determined by their markings.

In particular, the letters A, B and C in relation to batches of hot-rolled channels will indicate that the rolling was carried out with high (A), increased (B) or normal accuracy (C).

Channel according to GOST

The difference between the “U” and “P” channels is the slope of the internal corners of the product. Product “U” has an internal angle, a smoothed slope equal to 90 degrees (most often it cannot withstand this value). Product “P” has an internal corner with a maintained angle of 90 degrees.

A hot rolled product is made using hot rolled metal. The product is manufactured in accordance with GOST 19425-74, it is carried out in the context of industries. Most often it is used in the field of carriage building, for example, for trolleys. The type and weight of products are different, the average weight of a P-product varies from 4.8 to 20 kg, weight is measured per 1 meter of product. The width of the product ranges from 5 to 10 centimeters, and the length - from 2 to 12 meters. In accordance with GOST, there may be weight deviations of no more than 5% of physical weight.

The size and type of the product is printed on the product, marked, and consists of a digital and alphabetic value. The number indicates the distance between the edges and the edge of the product, and the letter indicates the angle at which the shelves of the product are located. It is worth noting that the product itself contains a low content of carbon and manganese, which makes the product more stable and durable at low temperatures. These qualities give the product the opportunity not only to serve for a long time, but to save money and increase reliability in the operation of structures. When choosing the required product, experts advise studying the classification table. You can buy a new channel, or you can find used options in quite acceptable condition, for example, in online construction stores with delivery or on ad sites.

How much can a channel weigh?

Popular types of products (channel and what are the differences)

Product type 10: widely used in construction and engineering fields; It has high mechanical qualities and is used for large rod structures, support and load-bearing mechanisms in the construction of various industrial facilities.

Product type 14: considered the most popular product in construction; widely used in the construction of various structures with heavy reinforcement of load-bearing parts; It is used in the construction and mechanical engineering sphere, it can be of normal and increased accuracy.

Product type 20: due to its high strength and reliability, it is used in complex structures with high dynamic, static and cyclic loads. Its main function is a load-bearing mechanism for strengthening bridges, complex reinforcement of floors in multi-storey buildings and in roofing mechanisms.

Scope of application of the channel (what are the differences between channel and channel)

Recently, this product has gained great popularity in use. And this is not surprising. In the construction industry, this product is simply irreplaceable; it provides not only the strength and reliability of the structure as a whole, but also safety. When commissioning any construction project, a school, an office building or your own home, a special metal corner or channel is always used. Directly in the design itself, its task is to provide powerful support for all complex parts. Experts advise using it in laying the foundation, which gives greater strength to the future object.

This product is also widely used for covering frames and for equipping ramps. Therefore, to ensure the rigidity and stability of the structure, one cannot do without it. In addition to the construction industry, it is used in the automotive and carriage manufacturing industries, in the architectural and machine tool industries. Due to the fact that the product has a strong axial bend, it has found its application in almost all sectors of the economy.

You can purchase such a product at any rolling mill or metal warehouse. Here is a more detailed description about channels.

Area of ​​use

We have already mentioned the use of channels in different types of construction. Their main task is to strengthen concrete structures, increase the strength and service life of the building. In addition, channels are used to reinforce power lines, bridges, industrial buildings, and structures.

The catalog contains perforated products. They are equipped with special holes necessary for the rapid installation of structures without electric welding. Also, between the channel shelves there may be pipes for supplying utilities and cable lines.

Aluminum channels are relevant for light parts of a building, such as internal partitions, showcases, and shelving.

Channel p and u what are the differences

• Source2
• Source3
• .. | Channel 24. Channel 24 assortment. Difference, dimensions, channel weight 1 meter and channel 24 characteristics.

The difference between a cold-formed channel and a hot-rolled one

A list of a number of distinctive points regarding the difference between a hot-rolled channel and a cold-rolled (bent) U-shaped profile.

The difference between a bent channel and a hot-rolled one:

1. Hot rolled has a more reinforced profile, because There are thickenings in the bend areas and flanges, which in turn are caused by the peculiarities of manufacturing the hot-rolled channel. Therefore, it is stiffer than a bent channel.

2. The bent one has clear internal radii, and therefore less rigidity.

3. The bent one has a lower specific gravity, thus, with the same product sizes, it weighs significantly less than the hot-rolled one, thereby reducing the cost of the metal structure.

4. A bent channel has a much wider range of products than a hot-rolled channel. You can calculate the required loads, set the required size of the bent channel, and the design will be cheaper, not inferior in reliability to a hot-rolled product.

5. The range of hot-rolled channels is limited and strictly regulated by the industry standard (GOST).

6. Equipment for the production of hot-rolled channels is bulky, and only metallurgical plants own them.

7. When profiling on rolling equipment, a bent product is freed from all workpiece defects. This eliminates the need for subsequent work on the product, such as chamfering.

8. The low specific weight of the bent channel allows not only to save on the purchase of the product, delivery and use of special equipment, but also during installation, namely, the installation speed increases, the design is lighter, and accordingly less funds will be required for the foundation.

will produce a bent U-shaped channel according to your dimensions or dimensions in accordance with GOST. More detailed information about the product:

Bent channel (U-profile)

How to calculate a beam for bending - wood + steel. Video from construction site #3. About the floor beam.

Source2

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• The pendulum BACKED about sixty degrees.
• Our main DIFFERENCE from each other is not in appearance, but in the perception of the world as such.
• A new PRODUCTION plan has been approved for the coming month.

Selection of channel and I-beam. Sopromat

What is the difference between U and P channels?

The construction of a garage, change house or high-rise building cannot be done without load-bearing elements. The most famous of them is the channel. The form factor is determined by GOST; types P and type U are distinguished. What is the difference between these profiles?

What is a channel

The structural beam is believed to have been invented in Germany. In any case, in Russia it is customary to call a U-shaped profile with the German word channel. The elements are available in various sizes, determined by the distance between the legs of the letter P (shelves).

Where is the channel used?

Wherever a rigid support or a durable frame is needed. A ramp for strollers, the frame of a construction house, a garage, prefabricated hangars - everything is made of channels. In industry, the U-profile is placed under the foundations of machine tools, and crane beams are mounted on them.

Engineers are attracted by the excellent combination of strength in all load directions (torsion, bending) with low weight. In addition, straight surfaces fit together like a children's construction set; you can assemble houses of any shape.

Channel assortment

Standardization is the basis of progress. There are GOST standards for channels that specify profile features and the distance between flanges. When designing a skyscraper or bridge, an engineer can select the required strength grade.

According to the standard, the channel is designated by a number and a letter. The number shows the distance between the shelves in centimeters. Despite the fact that the channel profile is always U-shaped, it may have features specified by the letter:

• P – channel with parallel flanges and right angles;
• U – channel with inclined internal walls;
• E – economical;
• L – lightweight.

Figure 1 shows the cross-sectional profiles of channels of various series.

To build a garage, 5P will be enough, 10P is suitable for floors, the most common size for building frames is 14P.

What is the difference between U and P channels?

For the production of channels of both series, hot rolling technology is used. The rolling mill of a metallurgical plant repeatedly pulls hot metal through rolls to form a profile. The surface of hot-rolled channels is not very smooth; during installation, you have to grind the planes, adjusting the elements to each other.

Channels of the P and U series differ in cross-sectional shape. For example, consider products 40P and 40U (position 1 and position 2 in Figure 1).

• For a 40P channel, the internal line of the flange is parallel to the outer one, that is, the thickness of the flange is the same over the entire section.

• In channel 40U, the inner part of the shelves is made with a slope, that is, the thickness of the shelf varies along the section. The thickness of the shelf is less at the edge and gradually increases towards the base. Typical deviation is 5-10%.

At the same time, the cross-sectional area of ​​the U and P series channels is the same, the weight of 1 linear meter is also the same, the theoretical reference values ​​characterizing the U and P channel are also close values.

The decision to use a particular series must be made by the designer, who has complete information about the purpose of the designed structure and the loads that it will experience.

Most often, hot-rolled channels are used in large projects - bridges, crossings, reinforcing structures. Where surface quality is not critical, where joining of internal planes is not required, but the margin of bending strength is important.

To summarize, what is the difference between channel U and P:

• The inner walls of the profile are inclined;
• The bending strength of the U assortment is higher than that of the same type P;
• Features of the form limit the application.

In many cases, hot-rolled channels of all series can be replaced by bent channels of similar dimensions. The issue of possible replacement is also decided by the designer.

Channel 10: characteristics, size, weight, weight, types, photos, videos.

Absolutely all enterprises that manufacture construction parts must adhere to generally accepted standards. The production of channels is no exception. Its range is very wide and each profile is intended for a specific use.

Before talking about a specific channel, it is necessary to understand what a channel is. A channel is a special metal product, which is used in large quantities in construction to give greater strength to frames and structures. In the next photo you can see the channel in more detail.

Channel 10 is popular among many areas of production:

1. In construction, such as strengthening and erecting concrete structures. Also, a 10 mm channel increases the rigidity of structures and makes them more stable.
2. Mechanical engineering.
3. Machine tool industry.
4. Heavy industry.

A 10 mm channel allows you to strengthen metal structures, making them safe. It can also be used as the main type of supporting frame to create supports. The product can be used as a separate part or assembled into one structure by welding.

Channel dimensions 10

Product number 10 is often designated as channel size 100; size 100 characterizes the marking according to the width of the shelf in (mm).

Common parameters:

Channels 10 and 10P have identical parameters with the exception of the flange radius r.

• shelf base height (h): 100 (mm);
• shelf width (b): 46 (mm);
• wall thickness (s): 4.5 (mm);
• shelf thickness (t): 7.6 (mm);
• radius of internal curvature (R): 7 (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 (mm).

Important: the data is valid for hot-rolled steel channels in accordance with GOST 8240-89.

Features and types of hot-rolled products with profile No. 10

As stated above, channel 10 is produced in accordance with GOST 8240. All rolled products of this standard (that is, all standard sizes) differ from any other channel section products. All differences, including the manufacturing method, are described in relative detail in the first chapter of the article on channel No. 16. The same material also provides a description of the external and other features of the rolled channel No. 10 under consideration.

Standard 8240, being a GOST assortment, regulates the types and list of standard sizes of products produced according to it with the corresponding dimensions and cross-sectional area (in diameter), weight of 1 meter, length, permissible maximum deviations from these values ​​and other characteristics depending on these parameters.

And according to GOST 8240, the channel 10 in question is all products of this standard, manufactured with a profile (wall) height of 100 mm. In total, 3 types (series) of rolled channel No. 10 are produced, the division into which is made according to the geometric dimensions and cross-sectional shape of the profile:

• U – products, the internal edges of the shelves of which have a slope;
• P – products whose shelf edges are parallel;
• E - so-called economical channels, the edges of the flanges of which are parallel.

Accordingly, these series of products are designated: channel 10U, 10P and 10E.

Explanation of designation 10 – height (in dm). P is a type of profile that resembles the corresponding letter of the Russian alphabet (its shelves are strictly parallel and located at right angles to the wall). Section parameters All linear dimensions are in “mm”. Height (h) – 100. Width (b) – 46. Thickness: walls (s) – 4.5; shelves (t) – 7.6. Radii: curvature ® – 7; rounding ® – 3.0. Sometimes you need to know the cross-sectional area. For a 10P channel it is 10.9 cm². The channel length ranges from 4 to 12 m. It can be longer if the production of such a blank is agreed upon with the customer. The profile parameters are controlled at any section of the channel, but not closer than 0.5 m from its ends. All other data, for example, errors depending on the accuracy of the rental, are understandable only to specialists, so it makes no sense to present them.

Determination of the mass of channel 10

It is easiest to determine the mass of a linear meter of bent channel - equal or unequal flange, since the wall thickness in this case is equal to the wall thickness and is constant along the entire perimeter of the cross section.

How much a bent equal-flange and unequal-flange channel weighs can be calculated using the formula:

M – mass of 1 linear meter, kg;

l is the length of the cross-sectional perimeter, l = h+b1+b2, where h is the height of the wall (for channel 10 it is equal to 0.1 m), b1 and b2 are the width of the first and second shelves, for equal-flange products b1=b2;

ρ – average specific gravity equal to 7850 kg/m3.

The wall thickness and width of the shelves in bent products can be standard, or can be taken in accordance with the technical documentation developed for a specific project.

For hot-rolled products, in which the thickness of the flange and wall are different, the formula looks slightly different:

M – mass of 1 linear meter, kg;

h – wall height;

b – flange width (in hot-rolled products both flanges have equal width);

s – wall thickness;

t – flange thickness;

ρ – average steel density equal to 7850 kg/m3.

For standard hot-rolled channels 10 with sloped flange edges and parallel edges in accordance with GOST 8240-97

these dimensions are equal:

As a result of calculations, we obtain the value of the mass of a linear meter - approximately 9 kg. This value is slightly different from the table, since the formula does not take into account the radii of internal roundings.

Technical characteristics of 10mm channel

The channel has a curved internal section shape like the letter “P”. Due to its high rigidity, the product can withstand enormous loads.

The 10 meter channel has the following dimensions:

1. Shelf height 100 mm.
2. Width 46 mm.
3. Wall width 4.5 mm.
4. The thickness of the shelves is 7.6 mm.
5. The length of the edges is 10 cm.

Weight of channel No. 10

Despite the fact that the channel contains an alloy, it is very durable. A 10-meter channel has a small mass per linear meter. This is the main advantage why the product is very popular. The weight of 1 meter of channel 10 is 8.6 kg.

Channel: marking profiles with U-shaped shelf edges

This common participant in a great variety of prefabricated structures undoubtedly needs no further introduction or annotation for true master builders. And yet: sometimes “communication” with channels presents some difficulties regarding determining the markings and choosing the product necessary for the most clear implementation of the tasks assigned to the building material. For example, what is better to use in a particular situation: a profile with parallel edges of the shelves or one with slopes? What is the correct way to select a hot-rolled steel U-shaped profile and its dimensions? Let's find out!

Main settings

Roughly speaking, a channel is an all-metal profile with a U-shaped section of shelves (in appearance it resembles the letter of the same name - hence the name). It can be made of different types of steel and stainless steel. This rental product differs in dimensions and dimensions (all information is in the special tables below), and in its technological characteristics and parameters: height, width, thickness, shelf inclination, as well as resistance and inertia, and some other data. The height of the product is greater than its width, as a rule, one and a half times or more (up to 3.5). And the cross-sectional shape of the channel provides a high level of structural rigidity. This type of rolled metal is also used in the construction of buildings, structures of various sizes, as well as in mechanical engineering, as a rule, for the manufacture of metal structures. The product is used as a load-bearing element of floors and frames of various structures. In addition, some brands are used in automobile and carriage construction, as well as for decorative purposes. To understand all this in detail, let’s carefully read the materials below.

Production technologies

There are cold-rolled (bent) and hot-rolled technologies for the production of these products. In the first case, the channel is obtained by cold profiling from appropriate blanks. In the second - using hot rolled profiles.

Also, U-shaped channels are different in their design. For example, there are products with parallel edges of shelves (brand P) and with inclined edges (brand U). Regardless of the options used, the range of profiles determines their low weight and excellent rigidity. It is these properties that make it possible to use channels of different sizes for the manufacture of structures with increased loads for construction and other purposes. Among the advantages of profiles is the ability to withstand bending, as well as various types of loads: for example, rupture or compression.