Galvanized sheet coils are generally divided into hot-base galvanizing and cold-base galvanizing according to different substrates. Hot-base galvanizing (hot-dip galvanizing): Process: Hot-base galvanizing refers to immersing steel in molten zinc liquid so that zinc adheres to the surface of the steel to form a coating. In this process, the steel must be pre-cleaned and treated. Features: Zinc reacts with steel at high temperature to form a zinc-iron alloy layer, which makes the coating tightly combined and has good corrosion resistance and wear resistance. Uses: Widely used in large outdoor components and load-bearing structures such as bridges, road guardrails, iron towers, etc. Cold-base galvanizing (electrogalvanizing): Process: Cold-base galvanizing is to deposit zinc on the surface of steel in the form of a coating through an electrolytic reaction. It is usually carried out at room temperature. Features: The coating is relatively thin, the surface is smooth and beautiful, it is relatively economical and applicable, but the corrosion resistance is relatively low. Uses: Commonly used for smaller, precision parts or products with high requirements for appearance, such as auto parts, home appliances, small hardware, etc.
The galvanized sheet coils we usually refer to are hot-dip galvanized sheets. Hot-dip galvanizing can be divided into galvanized sheets with patterns and galvanized sheets without patterns according to the appearance of the galvanized layer.
