H-shaped steel is a new type of cost effective construction steel.H-shaped steel has reasonable and cost effective sections and good mechanical properties. During the hot rolling, every point on the section extended uniformly, which result in low internal stress. Compared with commercial I beam, hot rolled H-shaped steel has such advantages as large section modulus, light weight, and material sparing. Using H beam can decrease the weight of construction structure by 30-40%; the inner edge of the leg is parallel to the outer edge, and the leg end is right angled, as a result, it is easy to be assembled into elements, therefore, the welding and riveting work can be reduced by up to 25%. It is often used for large scale construction work (such as factories, high buildings, etc.), bridge, ship, crane, transportation vehicle, foundation of equipments, frame, and foundation pile, etc., which require good bearing capacity and stable sections.