Angle steel is a carbon structural steel for construction. It is a simple section of section steel, mainly used for metal components and the frame of the workshop. It is required to have good weldability, plastic deformation and mechanical strength in use. The raw billet for Angle steel production is low carbon square steel, and the finished Angle steel is delivered in hot rolled forming, normalizing or hot rolled state. Angle steel commonly known as Angle iron, is perpendicular to each other into angular steel strip.