Product Overview High strength structural hot dip galvanized steel coils combine excellent mechanical strength with reliable zinc corrosion protection. The S250GD to S550GD grade series is specially designed for load-bearing structural applications, offering higher strength-to-weight ratio than conventional mild steel GI coils.
Full Specifications
| Parameter | Grade Options |
|---|---|
| Steel Grade | S250GD+Z, S280GD+Z, S320GD+Z, S350GD+Z, S550GD+Z |
| Minimum Yield Strength | 250 / 280 / 320 / 350 / 550 MPa |
| Minimum Tensile Strength | 330 / 360 / 390 / 420 / 560 MPa |
| Minimum Elongation | 19 / 18 / 17 / 16 / 12 % |
| Thickness Range | 1.0 – 4.0 mm |
| Width Range | 1000 – 1500 mm |
| Zinc Coating | Z100 – Z275 g/m² |
| Spangle | Regular / Minimized |
| Standards | EN 10346, ASTM A653M |
Core Advantages
- High strength-to-weight ratio reduces material usage and project cost
- Uniform zinc coating provides long-term corrosion protection for outdoor structures
- Consistent mechanical properties along full coil length for reliable structural performance
- Suitable for cold forming, roll forming and bending without coating peeling
Typical Applications Steel structure purlins, PV solar mounting brackets, highway guardrails, container frames, automotive structural parts, warehouse racking systems and industrial building frames.
Packing & Delivery Standard export packing suitable for heavy gauge coils. Mill test certificates (MTC) are provided with each shipment showing full mechanical and chemical property data.
