Brown rust-resistant Al-Zn coated sheet

With the classic 55% Al, 43.4% Zn and Si coating ratio, its corrosion resistance is 2-3 times higher than ordinary galvanized sheets, extending outdoor service life by 5-8 years. It can operate stably for a long time even in coastal high-salt-spray areas. It comes with a uniform brown matte finish, no secondary painting is required. It directly fits retro and industrial-style building facade designs, eliminating color difference and paint peeling risks caused by post-coloring. It retains the high-reflection property of Al-Zn substrate, with thermal reflectivity twice that of ordinary galvanized sheets. As roofing material, it effectively reflects solar radiation and cuts building energy consumption. The all-metal substrate meets Class A non-combustible standard. It can withstand temperatures over 300℃ without deformation, releases no toxic smoke in fires, and complies with fire codes for all types of buildings.