What Does Galvanized Mean?
Galvanizing is the process of applying a protective coating to steel or iron. The coating is made from zinc and is used to halt the formation of rust. Galvanization is important because it provides long-lasting protection for steel and iron products.
| Commodity | Hot Dipped Galvanized Steel Sheet,Galvanized Steel Sheet |
| Grade: | Q195, Q235 |
| SGCC, SGCH,SGC340 SGC400 SGC440 SGC490 SGC570 | |
| SGHC SGH340 SGH400 SGH440 SGH490 SGH540 | |
| DX51D DX52D DX53D DX54D | |
| S220GD S250GD S280GD S320GD S350GD S400GD S500GD S550GD | |
| Standard: | ISO,JIS,ASTM,AS EN |
| Zinc coated: | 40-300g/m2 |
| Surface treatment: | Chromated and oiled, and ant-ifinger |
| Hardness: | Softy , half hard and hard quality |
| Thickness: | 0.12-5.0mm |
| Width: | 90-1500mm |
| Supply Ability: | 40000MT/month |
| Coil weight: | 3-8MT/Coil or as your request |
| MOQ: | 1MT |
| Packaging: | Export standard, seaworthy |
| ID: | 508mm or 610mm |
| Delivery time: | 10-20days after confirmed order |
How Does Galvanization Protect the Base Metal Underneath?
1. The zinc coating prevents corrosive substances like acid (acid rain for example) from reaching the metal underneath.
2. Galvanization protects from rusting. When the coating is scratched, zinc will still “sacrifice its anode” easier than the base metal does – which protects it from rusting.
Learn more about how and why metals rust in our blog: Which Metals Rust?
3. The zinc protects the metal by corroding faster than the base metal. Sometimes a special ingredient called a “chromate” is added to the galvanized metal, this makes it corrode even faster. It may sound like that is not what you want to happen, but remember the zinc corroding before the metal is what protects the metal underneath from rusting.
