The galvanized iron (GI) sheets are produced as plain coils / sheets (GP) and corrugated sheets (GC). Corrugated sheets are also known as corrugated galvanized iron (CGI) sheets. These are value added steel products which are tough, sturdy, light weight, bright, corrosion resistant and easy to transport. These are usually produced in the thickness range of 0.15 mm to 2.0 mm and width range of 800 mm to 1560 mm. The weight of zinc coating varies from 100 grams square meter (gsm) to 750 grams square meter. The weight of zinc coating varies with the thickness of the steel sheet and the application of the GI sheet.