The aluminum-zinc alloy for 55% Al-Zn alloy-coated steel coils (GL) consists of 55% aluminum, 43.4% zinc and 1.6% silicon, solidified at 600ºC high temperature. The whole structure is a quaternary AI-Fe-Si-Zn compound which becomes a protection layer on the steel sheet to prevent penetration of corrosive factors effectively.

The zinc layer on the surface of the galvanized steel sheet isolates the steel sheet from atmosphere to prevent further corrosion of the base sheet and ensures a long service life of the base sheet, due to the excellent corrosion resistance of the galvanized steel sheets. Besides, our galvanized steel sheets (GL) are economic and functionally diverse, meeting the requirements of different environments and applications and provide high added value for various combination of products. Now, the galvanized steel sheets are in common use in many fields such as precision instruments, computers, electronic appliances, architectures, color coating, etc.