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Galvanized corrugated board

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Galvanized corrugated board refers to a steel plate with galvanized surface. Galvanizing is a frequently used cost-effective corrosion protection method. This process uses approximately half of global zinc production

  1. Function
    Galvanized corrugated sheets are used to prevent surface corrosion of steel sheets and extend their service life. The surface of the steel plate is coated with a layer of metallic zinc.
  2. Classification
    According to production and processing methods, it can be divided into the following categories:
    ① Galvanized corrugated board. The thin steel sheet with a zinc layer is adhered to the surface by immersing it in a bath of molten zinc. At present, it mainly adopts the continuous galvanizing process, that is, the coiled steel plate is continuously immersed in a galvanizing tank and combined with molten zinc to form a galvanized steel plate.
    ②Alloy galvanized corrugated board. This kind of steel panel is also made by the hot dip method, but immediately after it is discharged from the tank, it is heated to about 500°C to form an alloy film of zinc and iron. The galvanized sheet has good paint adhesion and weldability;
    ③Electro-galvanized corrugated board. Galvanized steel sheets produced by electroplating methods have good workability. However, the coating is thin and its corrosion resistance is not as good as hot-dip galvanized sheet.
    ④ Single-sided and double-sided galvanized corrugated boards. Single-sided galvanized steel panels are products that are 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 not being galvanized on one side, another type of galvanized sheet is coated with a thin layer of zinc on the other side, that is, double-sided differential galvanized sheet.
    ⑤Alloy and composite galvanized corrugated boards. It is a steel plate made of zinc and other metals (such as lead and zinc alloys) or even composite coating. This kind of steel plate not only has excellent anti-rust properties, but also has good coating properties.
    In addition to the above five types, there are also colored galvanized corrugated sheets, printed coated galvanized steel sheets, polyvinyl chloride laminated galvanized steel sheets, etc. But the most commonly used one is still hot-dip galvanized steel sheet.

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