The specifications of stainless steel angle steel are expressed in millimeters of side width x side width x side thickness. For example, "∠30×20×5" means an stainless steel unequal angle steel with side widths of 30 mm and 20mm, aside from a side thickness of 5 mm. It can also be expressed by model number, which is the number of centimeters of side width, such as ∠3#. Stainless steel unequal angle steel can be used as various stress-bearing components according to different structural needs, and can also be used as a connector between components. It is widely used in various building structures and engineering structures, such as roof beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks and warehouse shelves, etc.