This heavy zinc coated hot dip galvanized steel coil is designed for harsh corrosion environments. With zinc coating mass up to Z275 g/m² and above, it delivers 2-3 times longer service life than standard Z80-Z120 GI coils, making it the ideal choice for outdoor long-term projects and coastal/industrial applications.
Full Specifications
| Parameter | Specification Range |
|---|---|
| Steel Grade | DX51D+Z, DX53D+Z, S350GD+Z |
| Thickness | 0.3 – 3.0 mm |
| Width | 1000 – 1500 mm |
| Zinc Coating (double-sided) | Z200, Z220, Z250, Z275 g/m² (up to Z900 on request) |
| Spangle Type | Regular spangle (standard); Minimized / Zero spangle optional |
| Surface Treatment | Chromated, oiled, anti-fingerprint available |
| Coil ID | 508 / 610 mm |
| Coil Weight | 5 – 10 MT |
| Standards | ASTM A653M, EN 10346, GB/T 2518 |
Core Advantages
- 2-3x corrosion resistance compared with standard zinc coating grades
- Dense and uniform zinc layer with excellent cut-edge protection
- Suitable for long-term outdoor exposure without frequent maintenance
- Available in both forming grades and structural grades for different project needs
Typical Applications Coastal building roofing, industrial factory cladding, outdoor communication towers, highway guardrails, agricultural facilities, sewage treatment equipment and outdoor steel structures in corrosion-prone areas.
Packing & Delivery Reinforced seaworthy packing with extra desiccants for long sea voyage. Custom packaging requirements can be accommodated. Production lead time: 20-25 days for custom heavy zinc coating orders.
