Coated steel sheet, also known as coated steel sheet, is a metal sheet made of low-carbon steel coated with materials such as tin, zinc, aluminum, chromium, lead tin alloy, organic coatings, etc. It is mainly used in packaging manufacturing and construction engineering fields [1] [4] [6]. According to the substrate, it can be divided into cold-rolled sheet, galvanized sheet, aluminum plated sheet, etc., and according to the coating process, it can be divided into hot-dip coating, electroplating, and roll coating.