Surface hot-dip galvanized welded steel plated or galvanized steel layer is called. HDG products are widely used in construction, home appliances, travel, container manufacturing, mechanical and electrical industries, involving almost all areas of basic necessities. In recent years, galvanized steel increased world demand, output growth soon, in the United States, Japan and other steel producing countries, galvanized steel sheet steel in the proportion as high as 13% -15%.


Recently, the automotive industry more and more attention to the life of the material, with painted cold rolled steel has been unable to meet the corrosion requirements. In this case, excellent corrosion resistance and low cost of hot dip galvanized sheet generally begin by the car manufacturers of all ages.


The biggest advantage for coating steel sheet is excellent corrosion resistance, painting, decorative and good formability. In recent years, the amount of coating coated steel in automobiles has been rising, and become a vehicle body with a sheet. Around the world are studying how to expand the coated laminates varieties, specifications, improved coating process and to improve the coating quality, namely corrosion resistance, chalking peeling, coating, welding. Coating plate formability always is an important aspect of its application, depending on the substrate performance, technology and performance coatings and molding process conditions, by combining advanced technology cooperate in order to achieve a good effect.