Angle steel can be assembled into various different load-bearing components according to different structural requirements and also serves as a connecting element between components. It is widely used in various architectural and engineering structures, such as beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, and warehouse shelves.

Angle steel is a carbon structural steel used for construction, which is a simple-sectioned shape steel. It is primarily used for metal components and the frameworks of buildings. It requires good weldability, plastic deformation properties, and a certain level of mechanical strength for use. The raw material for the production of angle steel is low-carbon square billets, and the finished angle steel is delivered in a hot-rolled, normalized, or hot-rolled condition.

Primarily divided into equal-leg angle steel and unequal-leg angle steel, with the latter further categorized into equal-thickness unequal-leg and unequal-thickness unequal-leg types. The specifications of angle steel are indicated by the dimensions of the leg length and thickness. Currently, the specifications of domestically produced angle steel are:2—20Numbered by the centimeters of the side length, the same number angle steel is commonly2—7A variety of different edge thicknesses. Imported angle steel is marked with the actual dimensions of both sides and the edge thickness, along with relevant standards. Generally, the edge length12.5cmAbove are large angle steel beams.12.5cm—5cmBetween them is medium-sizedAngle iron, edge length5cmThe following is for small-scaleAngle iron.