It can be divided into the following categories according to production and processing methods:
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, the continuous galvanizing process is mainly used for production, that is, the rolled steel plate is continuously immersed in a plating bath containing molten zinc to make galvanized steel plate
②Alloyed galvanized steel plate. This kind of steel plate is also made by the hot dip method, but it is heated to about ℃ immediately after coming out of the tank, so that it can form an alloy film of zinc and iron. This kind of galvanized sheet has good paint adhesion and weldability
③Electro-galvanized steel sheet. This kind of galvanized steel sheet manufactured by electroplating method has good processability. However, the coating is thin and its corrosion resistance is not as good as that of hot-dip galvanized panels
④ Single-sided galvanized steel panels and double-sided galvanized steel panels. Single-sided galvanized steel sheet is a product that is galvanized on only one side. In terms of welding, painting, anti-rust treatment, processing, etc., it has better adaptability than double-sided galvanized sheets. In order to overcome the shortcomings of one side not being coated with zinc, 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
⑤ Alloy and composite galvanized steel sheet. It is made of zinc and other metals such as lead, zinc alloy or even composite plated steel plate. This kind of steel plate has both excellent anti-rust properties and good coating properties
In addition to the above five types, there are also colored galvanized steel plates, printed and coated galvanized steel plates, and polyvinyl chloride laminated galvanized steel plates. wait. But currently the most commonly used is still hot-dip galvanized sheet.
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