Aluminum coil pre painted with pvdf coating find its applications in roofing, ceiling, flooring, wall cladding and various other decorative purposes. Its alloys cover 1xxx, 3xxx and 5xxx series. 1xxx here mainly refers to 1100 and 1050. They have the lowest strength and weakest corrosion resistance as a mill finish material. 3xxx includes 3003, 3004, 3005 and 3105, featured by …