Everything you need to know about channel bars 14

Channel 14 - one of the demanded metal profiles, which is actively used in construction and industrial fields. Unlike most other standard sizes, channel 14 is used for the manufacture of various structures, mechanisms, equipment. Rent can often be found in automobiles, ships and motorcycles. It is also used in the construction of wagons. It is worth taking a closer look at the features of rolled metal and determining its main characteristics.

Construction channel 14 - a product of metallurgical production, which is made on the basis of carbon steel or metal with a low alloying rate. The number "14" is the product's dimensions in centimeters. The cross-section of the product has the shape of the letter "P", which ensures high strength properties of rolled metal and at the same time allows to achieve good elasticity. In terms of its characteristics, the channel is second only to the I-beam, but at the same time it does not lose the ability to evenly distribute the load over the surface.

Manufacturers of rolled metal products produce several types of 14P channel bars. Popular variations will be as follows.

• 14P. Hot rolled profile for general use. Manufacturing is regulated by GOST 8240-97, where the basic requirements for the product are spelled out.
• 14U... Represents rolled products in demand in the automotive industry with improved strength characteristics and modernized shelves.
• Equal-flange bent channel. It is made of steel, the required shape is given by specialized machines.
• Unequal bent channel... For the manufacture of such rolled products, roll forming machines are used.

As already mentioned, the production of channels of any kind takes place taking into account the requirements of GOST 8240-97. There are 5 main types of rolled products, as well as 2 subspecies in one of the series. It is worth going through the main options again:

• Have - channel with shelves, the inner edge of which provides for a slight slope;
• NS - metal products with parallel shelves;
• NS - economical rolled metal products with parallel flange edges;
• L - lightweight profile with shelves, the edges of which are parallel to each other;
• WITH - a special type of channels with shelves, the edges of which are located at an angle.

The last series has two subspecies: standard and weighted. It is logical that there is a difference between the two elements in characteristics, sizes and other indicators. The weighted special channel is a profile with a thickened wall and extended shelves. The marking of such products looks like "Ca".

Thus, GOST 8240 regulates the production of at least 6 types of channel bars No. 14. In addition, an additional classification of elements is distinguished by manufacturing accuracy. In this category, the following types of channel bars:

• normal accuracy category;
• increased accuracy;
• high precision.

The production of channels is carried out using special equipment, through which it is possible to adjust the slope and dimensions of the shelves, walls. By the method of production, rolled metal is divided into hot rolled and bent... The shape of the flange faces, in turn, can be parallel or have a certain slope from the inside.

GOST 8240 provides information on the standard performance of the manufactured channel bars No. 14. You can determine the characteristics of rolled metal by the brand, which includes letters and numbers. If everything is already clear with the first ones, then the numbers in the marking of the steel elements are responsible for the dimensions of the product. In other words, 14 is the channel height of 140 mm. On average, the height of the channel is in the range from 50 to 400 mm, and the width of the shelves is from 32 to 115 mm. The maximum permissible error in dimensions should not exceed 3 mm.

In GOST, in addition to height, you can see other dimensions in accordance with the brand of the product. Basic parameters and corresponding letter designations:

• h - profile height, it is the basic value, which must be indicated in the brand;
• b is the width of the shelf of the channel element;
• S is an indicator of the thickness of the wall connecting the shelves;
• R is the radius of curvature of the inner surface of the shelves;
• t is the thickness of the shelf;
• r is the total radius of curvature of the shelves.

When looking for a channel, you should pay attention to the weight of the element Is one of the important indicators. To save on the purchase of metal products, you should carefully calculate the available data and determine the required amount. There are several methods for determining the weight of rolled products per 1 running meter, and each is determined by the way the product is manufactured. So, to calculate the specific gravity of the hot-rolled profile, the indicators of the radii are taken into account: internal and general.

The main characteristics of channel 14 can be found in GOST 8240. They are presented in the form of a table, where each parameter, depending on the brand, has its own meaning. If you need information on the properties of hot-rolled channel steel products that appear when interacting with profile 14, then you should refer to other regulatory documents. In this case, GOSTs of technical conditions will come in handy. GOST technical specifications is a special document that contains standard indicators that regulate technical requirements and production conditions for certain metal products and rolled products.

Here are the main standards for the technical specifications of channels produced in accordance with the requirements of GOST 8240 and small explanations to them.

• GOST 535-2005. The document regulates the characteristics of metal products for general and special purposes, which are actively used in industry. Basically, the standard is addressed when studying the properties of elements made of carbon steel of ordinary quality.
• GOST 27772-2015. Regulates the properties of rolled metal used for construction and repair purposes. Allows you to determine the main characteristics of channel products, which are required, for example, to strengthen metal structures.
• GOST 19281-2014. Standard for metal products with increased strength indicators. Regulates the technical conditions of high quality steels, unalloyed and low-alloyed materials. Such products are often used to assemble a variety of structures.
• GOST 6713 and R 55374-2012. The documents characterize the products that are sent to the construction of bridges and complex metal structures.
• GOST 5521-93 and R 52927-201 Technical specifications for steel profiles in demand in shipbuilding and the construction of offshore structures. It also adjusts the characteristics of elements for the assembly of solid structures.

Tables and graphs published in GOSTs allow you to determine the quality of the product and correlate the geometric dimensions, as well as the length and area with the parameters described in the regulatory documents. Ideally, the indicators should be the same, although manufacturers often make products to order, making minor changes to the product configuration.

Modern channel No. 14, regardless of the type of execution, can be used in a wide variety of areas. Today, such profiles are used for:

• fixing reinforced concrete products;
• additional reinforcement of building structures made of metal of different volume and geometry;
• carrying out construction, repair work, where reinforcement of structures is required;
• assembly of machinery and equipment;
• production of railway cars.

The final cost of the channel is formed based on the running meters of the product that the customer requires. The price is influenced by several factors, including the steel grade, the characteristics of the finished product and the purpose. For example, a special 14Ca channel will cost more than a classic product due to its improved characteristics.

Channel 14 - strong and durable profile of various types, the production of which is regulated by GOST 8240. The building element demonstrates excellent performance both when reinforcing structures and when carrying out repair work, copes well with almost any task in the industrial field.