
PPGL Galvalume Steel Coil Color Coated Prepainted Metal Roofing Steel Sheet Coil. 25-Year Service Life: Normal service life of galvalume steel sheet is up to 25 years with excellent corrosion resistance. Superior Corrosion Resistance: Aluminum forms a dense alumina layer to prevent further corrosion when zinc is abraded. High Thermal Reflex: Heat reflectivity is very high, twice that of standard galvanized steel sheets. Customizable Production: We can produce Pre-painted galvalume steel coils according to customer needs. Excellent Processing Performance: Good adhesion between coating and paint film; can be punched, sheared, and welded easily. Economical Efficiency: Larger coverage area per weight compared to zinc due to lower density of aluminum-zinc alloy. Wide Thickness Range: Available thickness from 0.25mm to 1.2mm to suit various structural and decorative applications.