What Is Galvanizing?
Galvanizing is the process of coating steel with molten zinc to protect it from corrosion. Zinc reacts with the environment to form a dense zinc carbonate film that blocks oxygen and moisture, extending the steel's lifespan by 5–10 times compared with bare steel.
Z275 coating ensures sufficient zinc thickness to withstand long-term exposure to rain, salt, chemicals, and UV radiation.
Zinc Coating Thickness of Z275
| Coating Grade | Zinc Mass (g/m²) | Average Thickness (μm) |
|---|---|---|
| Z100 | 100 | ~7 |
| Z180 | 180 | ~13 |
| Z275 | 275 | ~20 |
| Z350 | 350 | ~25 |
Surface Quality Options
| Surface Type | Description | Use |
|---|---|---|
| Regular Spangle | Visible zinc crystals | Roofing, panels |
| Minimized Spangle | Smooth surface | Painting |
| Zero Spangle | No visible crystals | High-end appliances |
| Skin-passed | Improved flatness | Precision forming |
Comparison: DX51D Z275 vs Other Zinc Coatings
| Coating | Corrosion Resistance | Cost | Recommended Use |
|---|---|---|---|
| Z100 | Low | Low | Indoor |
| Z180 | Medium | Medium | Light outdoor |
| Z275 | High | Moderate | Outdoor & industrial |
| Z350 | Very High | Higher | Extreme environment |
Application Industries
Construction & infrastructure
Agriculture equipment
Electrical enclosures
Transportation
Industrial machinery
GNEE STEEL provides DX51D Z275 sheets and coils along with DX53D+Z, DX54D+Z, cold-rolled, PPGI, and heavy zinc-coated products, helping global customers optimize cost, durability, and production efficiency.
Packaging and shipping
