What are the types of steel coil?
A. Hot rolled coil is a steel sheet heated by a billet. The thickness of wholesale hot rolled steel coil is between 2 mm and 13.5 mm. Generally, the price of hot rolled coil is cheaper than that of flat plate.
B. The raw materials of cold-rolled coils are the same as those of hot-rolled coils. The process of knowledge processing is different. The high quality cold rolled steel coil china is transformed into coil by repeated cold rolling, pickling and cold rolling. This kind of steel plate has a smaller scope of use and its price is cheaper than that of hot-rolled coils.
C. Galvanized Steel Coil made in China, as its name implies, is coated with zinc metal on the surface of the steel plate. The main purpose of this is to prevent the surface of the steel plate from being corroded and to increase its service life. Galvanized sheet coil can be divided into hot dip galvanized steel sheet, galvanized steel sheet, composite galvanized steel sheet and color galvanized steel sheet according to different processing methods.
D. The high quality prepainted color galvanized coil is made of galvanized sheet coil as the base material, repeatedly spraying paint on the galvanized sheet, and then through complex processing procedures. This kind of roll has many colors, such as yellow, blue, red and white teeth. Because of the moderate price, it is widely used as wall and roof.
