U Channel Steel is used in construction and machinery with carbon structural steel, is a complex section of the steel section, the section shape for the groove shape. U Channel steel is mainly used for building structures, curtain wall engineering, machinery and equipment and vehicle manufacturing. In the use of the requirements of its welding, riveting performance and comprehensive mechanical properties. The raw material billets of the U channel steel are carbon steel or low alloy steel billets with carbon content not exceeding 0.25%.