Classification Of Galvanized Coils

Galvanized coils can be divided into the following categories:

a) Hot-dip galvanized steel coil. The thin steel coil is dipped into the molten zinc bath to make the thin steel coil adhere to its surface with a layer of zinc. At present, the continuous galvanizing process is mainly used for production, that is, the coiled steel plates are continuously immersed in a galvanizing tank with molten zinc to make galvanized steel coils;

b) Alloyed galvanized steel coil. This kind of steel coil is also made by the hot dip method, but it is heated to about 500℃ immediately after coming out of the tank to form an alloy film of zinc and iron. This galvanized coil has good paint adhesion and weldability;

c) Electrogalvanized steel coil. The galvanized steel coil manufactured by electroplating has good processability. But the coating is thinner, and its corrosion resistance is not as good as that of hot-dip galvanized coils;

d) Single-sided and double-sided galvanized steel coils. Single-sided galvanized steel coil, that is, a product that is galvanized on only one side. In welding, painting, anti-rust treatment, processing, etc., it has better adaptability than double-sided galvanized coils. In order to overcome the disadvantages of uncoated zinc on one side, there is another kind of galvanized coil coated with a thin layer of zinc on the other side, that is, double-sided differential galvanized coil;

e) Alloy, composite galvanized steel coil. It is a steel coil made of zinc and other metals such as lead and zinc alloy or even composite plated. This kind of steel coil not only has excellent antirust performance but also good coating performance.