Flat steel refers to steel with a width of 12-300mm, a thickness of 4-60mm, a rectangular cross-section, and slightly blunt edges. Flat steel can be finished steel or used as raw material for welded pipes and thin slabs for laminated rolling. Main application: Flat steel can be used as a finished steel product, as well as a billet for welded pipes and a thin slab for laminating thin plates. Main use: Flat steel can be used as a finished material for making hoop iron, tools and mechanical parts, and in construction.