Alu-Zinc Galvalume Steel Strip is covered by Al-Zn alloy, which is made of 55% aluminum, 43.4% zinc and 1.6% silicon cured at 600°C, the alloy coating makes the Galvalume Steel Strip have better properties, the galvalume corrosion resistance of steel is 2-6 times better than that of hot-dip galvanized steel. Corrosion resistance under most atmospheric conditions.