Angle steel can form various stress components according to different structural needs, and can also be used as connectors between components. Widely used It is applicable to various building structures and engineering structures, such as house beams, bridges, transmission towers, hoisting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, cable trench supports, power piping, bus support installation, warehouse shelves, etc. Angle steel is a carbon structural steel for construction. It is a section steel with simple section. It is mainly used for metal components and plant frame. In use, it is required to have good weldability, plastic deformation performance and certain mechanical strength. The raw steel billet for angle steel production is low-carbon square steel billet, and the finished angle steel is delivered in hot rolling forming, normalizing or hot rolling state