​A part of the galvanized steel production is corrugated to produce galvanized corrugated steel sheets (GC sheets).

Coloured steel plate with brilliant colours is a very good decorative material, with strong corrosion resistance, high mechanical properties, coloured surface layer does not fade over time, colour with different light angles will produce hue changes and other characteristics.

​Galvanised steel’s defining attribute is its layer of zinc coating, which forms a protective layer against the combination of moisture and oxygen that can otherwise cause rust to form on the underlying metal.

Galvalume is a coating consisting of zinc, aluminum and silicon that is used to protect a metal (primarily steel) from oxidation.

GI Roofing steel has good corrosion and oxidation resistance, so it is often used for waterproof roof building applications, but a good material cannot be made without the correct processing, and its common processing method is hot dip galvanising.