Classification and use of galvanized steel sheet
Release time:
2023-02-27
Hot-dip galvanized steel sheet. Dip the thin steel plate into the molten zinc tank to make the thin steel plate with a layer of zinc adhered to its surface. At present, the continuous galvanizing process is mainly used for production, that is, the coiled steel plate is continuously immersed in a galvanizing tank with molten zinc to make a galvanized steel plate;
According to the production and processing methods, it can be divided into the following categories:
a) Hot-dip galvanized steel sheet. Dip the thin steel plate into the molten zinc tank to make the thin steel plate with a layer of zinc adhered to its surface. At present, the continuous galvanizing process is mainly used for production, that is, the coiled steel plate is continuously immersed in a galvanizing tank with molten zinc to make a galvanized steel plate;
b) Alloyed galvanized steel sheet. This kind of steel panel is also made by hot dip method, but it is heated to about 500℃ immediately after coming out of the tank, so that it can form an alloy film of zinc and iron. This galvanized sheet has good paint adhesion and weldability.
c) Galvanized steel sheet. The galvanized steel panel manufactured by electroplating has good processability. However, the coating is thinner and its corrosion resistance is not as good as that of hot-dip galvanized panels;
d) Single-sided galvanized and double-sided differentially galvanized steel sheets. Single-sided galvanized steel sheet, that 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 sheet. In order to overcome the shortcomings of one side without galvanizing, there is another kind of galvanized sheet coated with a thin layer of zinc on the other side, that is, double-sided differential galvanized sheet;
e) Alloy, composite galvanized steel plate. It is an alloy made of zinc and other metals such as lead and zinc or even a composite plated steel plate. This kind of steel plate not only has excellent antirust performance, but also has good painting performance.
In addition to the above five types, there are also colored galvanized steel panels, printed galvanized steel panels, PVC laminated galvanized steel panels, etc. But the most commonly used is still hot-dip galvanized sheet.
According to the purpose, galvanized steel sheets can be divided into general use, roof use, building outer panel use, structural use, tile ridge board use, stretching use, and deep drawing use.
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