1. Hot dip galvanized steel plate. Immerse the thin steel plate in the molten zinc bath to make a thin layer of zinc adhere to the surface. At present, it is mainly produced by continuous galvanizing process, that is, the coiled steel plate is continuously immersed in the zinc-melted plating tank to make galvanized steel plate;
2. Alloyed galvanized steel plate. This kind of steel plate is also made by hot dip method, but it is heated to about 500 ° C immediately after leaving the trough to form an alloy film of zinc and iron. This galvanized sheet has good paint adhesion and weldability;
3. Electro-galvanized steel sheet. The galvanized steel sheet manufactured by the electroplating method has good workability. However, the coating is thin, and the corrosion resistance is not as good as the hot-dip galvanized sheet;
4. Single-sided and double-sided galvanized steel sheets. Single-sided galvanized steel sheet, that is, products that are galvanized on only one side. In welding, painting, anti-rust treatment, processing, etc., it has better adaptability than double-sided galvanized sheet. In order to overcome the shortcomings of uncoated zinc on one side, there is another galvanized sheet coated with a thin layer of zinc on the other side, that is, a double-sided galvanized sheet;
5. Alloy, composite galvanized steel plate. It is a steel plate made of zinc and other metals such as lead, zinc alloy and even composite plating. This steel plate not only has excellent anti-rust performance, but also has good coating performance;
In addition to the above five types, there are color galvanized steel sheets, printed coating galvanized steel sheets, polyvinyl chloride laminated galvanized steel sheets, etc. But currently the most commonly used hot dip galvanized sheet.
