Molten steel is poured, after cooling pressed plate-shaped steel. Plate is a flat plate-like, rectangular, rolled or cut directly from the wide strips. Divided by the thickness of steel plate, sheet <4 mm (the thinnest 0.2 mm) thick steel plate 4 to 60 mm thick steel plate from 60 to 115 mm. Steel plate by rolling points, sub-hot and cold. Sheet width of 500 to 1500 mm; thickness of 600 to 3,000 mm in width. Divided by steel sheet, ordinary steel, high quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel and pure iron sheets and the like; by professional zoning, there are drums with the board, enamel plates, bulletproof panels; press surface for coating points, galvanized sheet, tin plate, lead-plated sheets, plastic composite plate