. PPGI Coil Prepainted Galvanized&Galvalume Steel Coil The prepainted steel sheet in coil is a product obtained by subjecting a hot-dipped galvanized steel sheet, an galvalume steel sheet, or an aluminum sheet to a surface chemical treatment (coating) , followed by baking and curing. The total thickness of the pre-panted galvanized steel coil is composed of the base steel coating -primer top paint protective layer thickness. PPGI Coil Prepainted Galvanized&Galvalume Steel Coil The prepainted steel sheet in coil is a product obtained by subjecting a hot-dipped galvanized steel sheet, an galvalume steel sheet, or an aluminum sheet to a surface chemical treatment (coating) , followed by baking and curing. The total thickness of the pre-panted galvanized steel coil is composed of the base steel coating -primer top paint protective layer thickness. PPGI Coil Prepainted Galvanized&Galvalume Steel Coil The prepainted steel sheet in coil is a product obtained by subjecting a hot-dipped galvanized steel sheet, an galvalume steel sheet, or an aluminum sheet to a surface chemical treatment (coating) , followed by baking and curing. The total thickness of the pre-panted galvanized steel coil is composed of the base steel coating -primer top paint protective layer thickness. PPGI Coil