Pre-painted steel sheet is made by going through a hot-dipped galvalume steel sheet and galvanized steel sheet or aluminium sheet on a surface chemical treatment and then it’s finished by baking and curing.
- Pre-painted galvanized steel coil thickness is composed of base steel, the coating, primer, the top paint, protective layer thickness. Thickness of the top paint is 10-25μm, and the thickness of the back paint is 5-10μm. If the base steel thickness is thin, then the price of of PPGI steel coil is high since the cost of processing is higher.
- Paint coating material is usually polyester and the back paint is usually white grey. This can be customized as per customer request or as per RAL colour card. Special design patterns are also available such as flower print, wood grain, brick, camouflage.
PPGI is also called Prepainted Galvanized Steel coil with a hot dip zinc coated steel sheet substrate and colour coated steel coil.
PPGL is also called Pre-painted Galvalume Steel Coil with galvalume steel sheet as substrate
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