Angle steel, commonly known as angle iron, is a long strip of steel with two sides perpendicular to each other and forming an angle shape. Angle steel can also be divided into equilateral angle steel and unequal angle steel. Angle steel can be used to form various load-bearing components according to different structural needs, and can also be used as connectors between components. Widely used in various building and engineering structures, such as beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, and warehouse shelves, etc