A hot-dip galvanized coil (GI) is produced by passing the pickled and rolled full-hard plate through a zinc pot and coating the surface with a zinc film. Due to the properties of zinc, it has excellent corrosion resistance, paintability, and workability. Generally, the process and specifications of hot-dip galvanized steel sheets and galvanized steel coils are basically the same.

Hot-dip galvanizing is the process of applying a protective zinc coating to steel or iron to prevent rust.
Due to the self-sacrificing properties of zinc, it has excellent corrosion resistance, paintability, and processability.
The desired amount of gold plating can be selected and produced, especially thick zinc layers (maximum 120g/m2) can be produced.
Depending on whether the sheet has been flattened, it is classified as Zero Sequin or Super Smooth.