During the past 10 to 20 years, there have been many advances in the development of prepainted steel sheet. In order to take advantage of these technological advancements, the user needs to take many issues into consideration. High quality PPGI prepainted galvanized steel coil is produced more easily. Today, these issues can be addressed very quickly because of the long list of successful applications that have been implemented. Questions that need to be answered include: the properties of the steel, the type of metallic coating if any, the metallic coating thickness, the paint attributes with respect to flexibility, hardness, chalk and fade resistance, etc. Obviously, these decisions depend on the application and the performance desired by the manufacturer.

Roll application of paint to steel sheet in a continuous coil-coating paint line. In this modern process, computer control ensures paint films of uniform high quality -- corrosion resistant and so tough, flexible, and adherent that they withstand forming of the sheet into many shapes.