The angle steel can be composed of various stress-bearing members according to the different needs of the structure, and can also be used as the connection between the members. Widely used in various building structures and engineering structures, such as building beams, bridges, power transmission towers, lifting and transporting machinery, ships, industrial furnaces, reaction towers, container racks, cable trench supports, power piping, busbar support installation, and warehouses Shelves and so on.