Discover heavy-duty Z275 / G90 Hot Dipped Galvanized Steel Coils engineered with a thick 275 g/m² zinc layer for maximum corrosion resistance and extended structural longevity. Manufactured in compliance with international standards, our high-zinc GI coils serve critical outdoor and industrial applications in construction, framing, and manufacturing.
| Specification Parameter | Standard Range / Options |
| Zinc Coating Mass | Z275 g/m² (Equivalent to ASTM G90 designation) |
| Material Standards | ASTM A653 / EN 10346 / JIS G3302 |
| Substrate Grades | CS Type B, SS Grade 33/50, DX51D+Z |
| Thickness Range | 0.3mm – 3.0mm |
| Width & Surface | Width: 600mm – 1250mm; Spangle options: Regular, Minimized, or Zero spangle |
Welcome to Authentic Steel Ltd, your premier global partner for high-performance metallic-coated flat steel solutions. As an established Custom width G90 steel sheet coil factory, we specialize in providing superior China Z275 G90 galvanized coil inventory engineered to meet the stringent demands of structural engineers, heavy construction contractors, and industrial fabricators worldwide. Our heavy-zinc-coated coils combine exceptional sacrificial corrosion defense with reliable mechanical strength.
Our Z275/G90 coils are produced utilizing continuous hot-dip galvanizing lines that apply a heavy, uniform layer of molten zinc to a structural steel substrate. This creates a robust metallurgical bond designed to withstand aggressive atmospheric exposures.
Heavy Z275 / G90 Protection: Features a total minimum coating mass of 275 g/m² (double-sided), offering superior resistance against rust, oxidation, and severe environmental degradation.
Excellent Formability & Adhesion: Controlled alloy layer growth ensures the zinc coating stays intact during intensive roll-forming, bending, and punching operations without flaking.
International Compliance: Manufactured strictly in accordance with ASTM A653 and EN 10346 specifications, guaranteeing reliable mechanical performance across every batch.
The high coating weight and durability of our heavy-zinc coils make them essential across multiple demanding sectors:
Structural Construction: Extensively utilized for framing studs, load-bearing purlins, metal decking, and highway safety guardrails.
HVAC & Ductwork: Ideal for commercial ventilation systems, air conditioning casing components, and heavy-duty drainage pipes.
Agricultural & Outdoor Infrastructure: Perfect for grain storage bins, greenhouse framing, and outdoor industrial enclosures exposed to moisture and rain.
Procuring heavy-coated steel requires a dependable mill partner who guarantees coating weight compliance and dimensional precision. When you source through our established channels, you gain direct access to premier China hot dipped galvanized steel roll Z275 stock backed by major operational advantages:
Rigorous Quality Control: Every production lot undergoes strict triple-spot coating weight testing, thickness checks, and T-bend flexibility evaluations prior to dispatch.
Competitive Commercial Terms: We cater to global distributors seeking Wholesale ASTM A653 GI steel coil shipments supported by a favorable Bulk heavy zinc coating GI coil China pricing framework.
Export-Grade Logistics: Our logistics team ensures secure interleaf paper protection, robust strapping, and export-grade seaworthy packaging for safe, damage-free global transit.
Enhance your structural integrity and secure reliable heavy-coated inventory today. Contact our expert sales team to request a customized quotation, obtain mill test certificates, or discuss tailored specifications for your next volume order.
