The classification and basic knowledge of galvanized steel sheets can be divided: according to the galvanizing method:

①Hot-dip galvanized steel plate. A thin steel plate is immersed in a molten zinc bath so that a layer of zinc adheres to its surface. At present, continuous galvanizing technology is mainly used for production, that is, rolled steel plates are continuously immersed in a plating bath containing molten zinc to make galvanized steel plates;

②Alloyed galvanized steel sheet. This kind of steel panel is also made by the hot dip method, but it is heated to about 500°C immediately after coming out of the tank to form an alloy film of zinc and iron. This kind of galvanized sheet has excellent paint adhesion and weldability;

③Electro-galvanized steel plate. This galvanized steel sheet produced by electroplating has excellent processability. However, the coating is thin and its corrosion resistance is not as good as that of hot-dip galvanized sheets;

④ Single-sided galvanized steel plate and double-sided galvanized steel plate. Single-sided galvanized steel sheet is a product that is galvanized on only one side. It has much better adaptability in welding, painting, anti-rust treatment, processing, etc. than double-sided galvanized sheets. To overcome the defect of not being coated with zinc on one side, there is another type of galvanized sheet that is coated with a thin layer of zinc on the other side, that is, double-sided galvanized sheet;

⑤Alloy, composite galvanized steel plate. It is made of zinc and other metals such as lead, zinc alloy, or even composite-plated steel plates. This kind of steel plate has both an anti-rust function and an excellent coating function.