is hot dip Zinc coated steel sheet. Coating layer is almost pure Zinc. Two types
of surface finish are available; Regular spangle and Minimized spangle.
1. Corrosion resistance
Zinc coating prevents corrosion
by sealing off the steel surface from corrosive environment. If the coating is
accidentally scratched the surrounding zinc then acts as a sacrificial anode and
"heals the wound". This is called "sacrificial protection".
steel has a minimum Iron-Zinc alloy layer. This insures that the coating will
not peel under normal forming methods.
Metal fittings for construction,
Guardrail, Soundproof wall