GC Sheets (Regular / Zero Spangle) are galvanized corrugated steel sheets widely used for roofing and cladding applications. They are manufactured by coating steel sheets with zinc to provide corrosion resistance, with surface finishes available in regular spangle and zero spangle as per standard specifications. GC sheets are produced in various thicknesses, widths, and lengths, and are identified by their dimensions and coating type, with weight calculated based on size and material.