Reliability of load-bearing structures will be provided by the I-beam

I -beam metal beams are used almost at every modern construction site, both industrial and civil. Possessing a relatively low specific gravity, they have a high load capacity for deflection, which makes it possible to efficiently distribute the load to the bearing structures. These metal products are manufactured by rolling (shaped, hot-rolled I-beam) or by welding. In section are an H-shaped structure made of a wall and two shelves perpendicular to it. Shelves can have an inner slope for additional reinforcement. Such products are suitable for reinforcement with reinforcement of shaft shafts (C-series with a slope of 16%) and for installation of suspension ways (M-series with a slope of 12%).

The rolled I-beam is also called the I-beam. The main areas of application of these metal products are construction floors, bridge structures, suspension ways, pillars and columns. Depending on the purpose of the structures being erected, the I-beam steel beam can be selected for different workloads. Structurally I-bars differ in the thickness of the walls and shelves, the arrangement of the faces of the shelves (their internal faces can be parallel or have a slope). The selection method also has a manufacturing method, purpose and technical parameters.

The steel I-beam can be made in compliance with the requirements of state standards (GOST 8239 - 89, GOST 19425 - 74, GOST 26020 - 83 and others), and in accordance with the specifications of the manufacturer. The material in the case of rolling is carbon steel of structural quality. Such a metal structure as an I-beam welded beam is made of structural low-alloy steel for welded structures.

There are several types of I-beams that have parallel faces of the shelves: normal (B), column (K), broadband (W), normal (DB), additional series (D and D). The I-beam manufactured according to the standards, depending on the purpose, has a length of 4 to 12 m (as agreed with customers - up to 24 m). Can be high (A) or normal (B) rolling accuracy.

Welded steel I-beams are made of sheet metal in several stages. First, preforms of the necessary dimensions are formed, cutting them from metal, then the edges are milled. The harvested strips are transported to the conveyor by a crane, crimped and scalded by an automatic installation. Further, the product is rolled on a special mill to remove possible defects and is processed on a shot blasting machine to clean the contaminants. The quality of the welded I-beam must meet the requirements of GOST 23118-99 and GOST 26020-83 (or its parameters are agreed with the customer in advance).

I-beams allow 30% to facilitate the load-bearing structures in comparison with hot-rolled supports. The preliminary determination of the dimensions of the beams significantly reduces the amount of waste. The disadvantages of I-beams include vulnerability to corrosion, if there is no protective coating, and also the need for specialized equipment, without which they can not be mounted.