GL Steel Coil Hot dip aluminum zinc steel plate is a pre coated steel plate obtained by hot-dip coating a layer of Al Zn coating on both sides of cold-rolled steel plates of various strength and thickness specifications. The coating composition consists of 55% Al, 43.5% Zn, and 1.5% Si, which combines the physical protection and high durability of Al with the electrochemical protection characteristics of Zn. In addition, it has a highly decorative bright silver gray color and regular patterns on the surface, and has a floating convex feeling.