Prepainted Galvalume Steel Coil (PPGL) Home Products PPGI & PPGL Prepainted Galvalume expands on the corrosion resistance of standard Galvalume by adding a top coat of high-performance paint. Request a Quote Ask An Expert Previous Next Characteristics of prepainted color-coated coil substrate Hot-dipped aluminum zinc substrate:This product is plated with 55% AL-Zn and has excellent