Electro-galvanized substrate: The coating is thinner, and its corrosion resistance is not as good as that of hot-dip galvanized substrate.
Hot-dip galvanized substrate: A thin steel sheet is immersed in a molten zinc bath, causing a layer of zinc to adhere to its surface. This type of galvanized sheet has good paint adhesion and weldability.
Hot-dip aluminized zinc substrate: This product is coated with 55% Al-Zn, exhibiting excellent corrosion resistance. Its service life is more than four times that of ordinary galvanized steel sheet. It is a replacement product for galvanized sheet.
Product features:
(1) Good durability and longer service life compared to galvanized steel sheet;
(2) Good heat resistance, less prone to discoloration at high temperatures compared to galvanized steel sheet;
(3) Good heat reflectivity;
(4) Processing and coating performance similar to galvanized steel sheet;
(5) Good weldability;
(6) Good performance-price ratio, durable performance, and highly competitive price. Therefore, architects, engineers, and manufacturers have been using aluminum-zinc coated steel sheets extensively in industrial buildings, steel structures, and civil facilities, such as garage doors, eaves, and roofs.
