Galvanized steel coil, immersing the thin steel plate in the molten zinc bath, and adhering a layer of zinc thin steel plate on the surface. It is mainly produced by the continuous galvanizing process, that is, the coiled steel plate is continuously immersed in the zinc-melted plating tank to make galvanized steel plate; alloyed galvanized steel plate. This kind of steel plate is also made by the hot-dip method, but it is heated to about 500 °C immediately after exiting the tank to form an alloy film of zinc and iron. This galvanized steel coil has good paint adhesion and weldability.
GI coils
gi steel coil
gi sheet coil
galvanized coil
galvanised coil
galvanized steel coil
hot dipped galvanized steel coil
| Metal Base | Cold rolled steel coil |
| Thickness | 0.12mm~1.2mm |
| Width | ≤1250mm |
| Zinc Coating | 40~275gram/㎡ |
| Surface Treatment | Passivation/oiling |
| Spangle Types | Zero/ small/ regular/ big spangle |
The galvanized coils is defined as a carbon steel sheet coated with zinc on both sides. A zinc coating is one of the most effective and economical methods of protecting bare steel from a corroding environment. The zinc not only serves as a barrier between the steel and the environment, but it will also sacrifice itself to protect the underlying steel sheet.
Spangle：
Galvanization or galvanizing is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The size of crystallites (grains) in galvanized coatings is a visible and aesthetic feature, known as “spangle”.
Zinc Coated：
With the cold-rolled steel of different strengths and thickness as substrate. it is produced by applying the zine coat on both faces by hot-dip process.
