SHANDONG JULONG PREPAINTED STEEL CO.,LTD

Product Introduction: The substrate is an alloy coating of 55% aluminum, 43% zinc, and 1.6% silicon (density 3.75 g/cm³), combining the physical protection of aluminum with the electrochemical protection of zinc, offering 2-6 times the corrosion resistance of galvanized steel. Advantages: o Corrosion Resistance: No red rust after 5500 hours of salt spray testing (galvanized steel only 300 hours). o Heat Resistance: Can withstand long-term high temperatures of 315℃ (galvanized steel only 230℃). o Economy: 3% larger unfolded area than galvanized steel for the same weight. o High Heat Reflectivity: Up to twice that of galvanized steel, suitable for energy-efficient buildings.