A. The hot rolled coil is a steel sheet heated by a billet. The thickness of the
wholesale hot rolled steel coil is between 2 mm and 13.5 mm. Generally, the price of the hot-rolled coil is cheaper than that of a 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 a 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, 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 steel coil can be divided into hot dip galvanized steel coil, high quality cold rolled steel coil china, composite galvanized steel coil and color galvanized steel coil according to different processing methods.
D. The
high quality prepainted color galvanized coil is made of galvanized steel coil as the base material, repeatedly spraying paint on the galvanized coil, 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.
