Zincalume Water Storage Tanks are manufactured from steel sheet which has been continuously coated with zinc and aluminium to produce the excellent corrosion resistance that is commonly experienced by tanks that are exposed to the harshest of atmospheric conditions.Zincalume steel, a premium material complies with requirements of Indian Standard – IS 15961, International Standard – ISO 9364, Australian Standard – AS 2304 and American Standard – ASTM A 792M.Zincalume steel is manufactured by a continuous hot dipped metallic coating process. The alloy coating of Zincalume steel provides excellent corrosion resistance and has been found to possess greater resistance to cracking and peeling. Zincalume® steel has an alloy coating of 55% Aluminium, 43.5% Zinc and 1.5% Silicon. The 150g/m2 (with option of 200g/m2) coating weight is distributed equally on both surfaces of the coated strip. Metallic surface is coated with separate layers of special passivation solution and resin.