‌‌ Galvanized steel plate is welded steel plate ‌ with hot dip plating or electric galvanizing layer on the surface. This kind of steel plate is widely used in ‌ construction, ‌ home appliances, ‌ vehicle and ship, ‌ container manufacturing, ‌ electromechanical industry and other fields. Galvanized steel plate by plating a layer of zinc on the surface of the steel plate to form a layer of anti-corrosion protective layer, thereby extending the service life of the steel plate. ‌