H-shaped steel has an economical and reasonable cross-section shape and good mechanical properties. During rolling, the extension of each point on the cross-section is relatively uniform, and the internal stress is minor.
Compared with ordinary I-beam steel, it has the advantages of large section modulus, lightweight, and metal saving, which can make buildings. The structure is reduced by 30-40%.
Because the inner and outer sides of the legs are parallel and the leg ends are at right angles, they can be assembled into components, saving 25% of the welding and riveting workload.
It is often used in large buildings (such as factories, high-rise buildings, etc.) that require large interception capacity and good cross-sectional stability, bridges, ships, lifting and transportation machinery, equipment foundations, brackets, foundation piles, etc.
H-shaped steel is an economical cross-section steel optimized and developed from I-shaped steel with better cross-section mechanical properties. In particular, the cross-section is the same as the English letter “H,” so it is named after it. Its characteristics are as follows:
The flange is wide, and the lateral stiffness is high—strong bending resistance, about 5%-10% better than the I-beam.
The two surfaces of the flange are parallel, making connection, processing, and installation easy.
Compared with welded I-beams, it has low cost, high precision, minor residual stress, no need for expensive welding materials and weld inspection, and saves about 30% of steel structure production costs.
Under the same cross-sectional load. The hot-rolled H steel structure is 15%-20% lighter than the traditional one.
Compared with concrete structures, hot-rolled H steel structures can increase the usable area by 6%, while the structure’s dead weight is reduced by 20% to 30%, reducing the internal stress of the structural design.
