Galvanized Sheet Main Application Industries: A large number of galvanized sheets are used in automotive manufacturing, refrigerators, construction, ventilation and heating facilities, and furniture manufacturing. Galvanizing has become an important method of steel corrosion protection, not only because zinc can form a dense protective layer on the surface of steel, but also because zinc has a cathodic protection effect, when the galvanized layer is damaged, it can still prevent the corrosion of the iron base material through cathodic protection.