Angle steel can be composed of different stress components according to the different needs of the structure, and can also be used as the connection between components. 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.

Angle steel specifications are indicated by the dimensions of side length and side thickness. At present, the specifications of domestic Angle steel are 2-20, with the centimeters of side length as the number, and the same Angle steel often has 2-7 different edge thickness. The actual size and edge thickness of import Angle steel shall be marked on both sides and the relevant standards shall be indicated. Generally, large Angle steel with side length above 12.5cm, medium Angle steel with side length between 12.5cm and 5cm, and small Angle steel with side length below 5cm.