The steel is coated with zinc to help prevent corrosion. The zinc reacts with oxygen when exposed to the atmosphere, forming a zinc oxide that further reacts with carbon dioxide to form zinc carbonate. It stops further corrosion in many circumstances, protecting steel from the elements.
We supply a variety of coated steel sheet and coil products, including hot-dipped, electro galvanized, aluminized, galvannealed and galvalume.