Flat steel refers to steel with a width of 12-300mm, a thickness of 3-60mm, 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 use: Flat steel can be used as a finished material for making hoop iron, tools, and mechanical parts. It is also used as a structural component for building frames and escalators.