Angle steel is commonly known as Angle, it is the long shape steel that both sides each other into vertical angle.Divided into equal Angle and unequal Angle.    According to the stress of the structure of the different needs, angles can make into various components, also can make members between the joints. It is widely used in all kinds of building structures and engineering structures, such as beams, Bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, cable trench supports, power piping, bus support installation, and warehouse shelves, etc.