1. Electro-galvanized substrate:

  The coating is thin and the corrosion resistance is not as good as the hot-dip galvanized substrate;

2. Hot-dip galvanized substrate:

  The thin steel plate is immersed in the molten zinc tank to adhere a layer of zinc on the surface. This kind of galvanized plate has good paint adhesion and weldability;

3. Hot-dip aluminum-zinc substrate:

  This product is plated with 55% AL-Zn and has excellent anti-corrosion performance. Its service life is more than four times that of ordinary galvanized steel sheets. It is a replacement product of galvanized sheet.

(1) It has good durability, and its corrosion resistance is longer than that of galvanized steel;

(2) It has good heat resistance and is less prone to discoloration at high temperatures than galvanized steel sheets;

(3) It has good heat reflectivity;

(4) It has processing performance and spraying performance similar to that of galvanized steel sheet;

(5) It has good welding performance.

(6) It has a good performance-to-price ratio, durable performance and a very competitive price. Therefore, whether it is architects, engineers or manufacturers, galvanized steel sheets have been widely used in industrial buildings, steel structures and civil facilities, such as garage doors, gutters and roofs.