For galvanized steel coils, thin steel sheets are immersed in a molten zinc bath to become thin steel sheets with a layer of zinc on the surface. It is mainly produced by continuous galvanizing process, that is, the coiled steel plate is continuously immersed in a galvanizing bath with molten zinc. This kind of steel plate is also manufactured by hot-dip method, but after being discharged from the bath, it is immediately heated to about 500 ℃ to produce Alloy coating of zinc and iron. This galvanized coil has good paint adhesion and weldability.Hot-dip galvanized steel combines utility with beauty. It consists of tin, chrome, zinc or paint, which are the extra finish applied to the natural steel surface. The application of coating is to protect the surface of steel from oxidation and it is also used to enhance requirements for visual appearance.

Hot dip galvanized steels is specified for optimum corrosion protection and enhanced aesthetic appeal. Typical residential uses for galvanized steel include doors, window hoods, gutters, downspouts, etc.