Flat steel refers to steel with a width of 12-300mm, a thickness of 3-60mm, a rectangular section and a slightly blunt edge. The flat steel can be finished steel, or can be used as a blank for welded pipes and thin slabs for laminating and rolling thin plates. Main uses: as a finished product, flat steel can be used to make hoop iron, tools and mechanical parts, and used as building frame structural parts and escalators in buildings.