... specification and models and national standards of galvanized steel coilb. Using high-quality material and advanced ... the one type most common in this types.Perforated steel coil materials: stainless steel, aluminum, carbon steel, galvanized, brass, paper, ... Aluminum/pure Al/alloy Al Mild/Iron steel Galv.steel/Gal.30/40/60/90 Copper PVC ... No finishing Perforated Hot Dip Galvanized steel in coils