Description
The Workhorse Material You Can Actually Rely On
We’ve seen countless projects where G90 galvanized steel coils make the difference between a structure that lasts decades and one that fails prematurely. What makes our G90 stand out? It starts with the 0.90 oz/ft² (275 g/m²) zinc coating – that’s roughly equivalent to a human hair’s thickness in zinc, but it provides exceptional corrosion protection. In our 15 years of manufacturing, we’ve found this coating density offers the sweet spot between cost and durability for most applications.
The HSLA steel substrate (typically grades like DX51D or S350GD) gives you 300-550MPa tensile strength while maintaining good formability. One automotive client recently told us our coils performed better in their stamping process than material they sourced from Europe – with 20% fewer die wear incidents.
Where Performance Meets Practical Reality
You’ll find our G90 coils in:
* Roofing panels in coastal areas, where the 1,000+ hour salt spray test performance translates to real-world longevity
* HVAC ductwork where the consistent zinc coating prevents microbial growth
* Automotive underbody parts, where our ASTM A924-compliant coating adhesion prevents flaking during forming
* Structural framing in high-rainfall regions – we’ve had customers report 12+ years without red rust
We pay special attention to the details that matter:
– Spangle control from regular to zero (perfect for pre-paint applications)
– Tight 0.02mm thickness tolerance for automated processing lines
– Coil weights from 3-15MT to match your decoiling equipment
Unlike some suppliers, we don’t just meet ASTM A653 – we exceed it. Our in-house testing includes cross-hatch adhesion tests and microscopic coating thickness checks on every production batch.
Why Our Chinese Factory Makes a Difference
Being vertically integrated means we control quality from the steel substrate up. When a customer needed S350GD grade with PVDF topcoat for a Middle Eastern project, we delivered within 4 weeks – including custom slit widths and 5MT coil weights to match their packaging requirements.
We’ve invested heavily in:
– Automated coating thickness monitoring
– Real-time tension control during rolling
– Post-galvanizing passivation options
Whether you need 20MT or 2000MT, we can customize:
– Special chemistries (beyond standard SGCC/DX51D)
– Pre-painted variants with polyester/PVDF
– Embossed or cut-to-length processing
Talk to us about your specific requirements – we’re happy to share technical data sheets, sample pieces, or arrange third-party inspections before shipment. Our team has solved enough edge cases that we can probably anticipate your next question before you ask it.
