H – beam steel is a new economic construction steel. The section shape of H beam is economical and reasonable, and the mechanical properties are good. When rolling, each point on the section extends more evenly and the internal stress is small. Compared with ordinary I-beam, H beam has the advantages of large section modulus, light weight and metal saving, which can reduce the building structure by 30-40%. And because its legs are parallel inside and outside, the leg end is a right Angle, assembly and combination into components, can save welding, riveting work up to 25%. It is often used in large buildings requiring large bearing capacity and good cross-section stability (such as factory buildings, high-rise buildings, etc.), as well as Bridges, ships, lifting machinery, equipment foundation, bracket, foundation pile, etc.