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Help CenterASTM A653 G90 Hot Dip Galvanized Coil 0.5mm Thickness 120g/m2 Zinc Coating
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Hemaokang Steel (Shandong) Co., Ltd. is proud to present our premium ASTM A653 G90 Hot Dip Galvanized Coil with a precise thickness of 0.5mm and a zinc coating weight of 120g/m2. As a rapidly growing steel supplier established in 2025, we have already achieved an annual export value of US$50–100 million and serve markets across North America, South America, Europe, Asia, Africa, and Oceania. Our ISO9001-certified quality management system ensures that every coil delivered meets the highest standards of corrosion resistance, formability, and dimensional accuracy. This product is specifically designed to meet the rigorous demands of construction, automotive, and general manufacturing industries, offering an optimal balance of strength and durability.
Our hot dip galvanized coil is manufactured using high-quality steel substrates and a state-of-the-art galvanizing process that guarantees a uniform, tightly adherent zinc coating. The G90 coating class (equivalent to 0.90 oz/ft²) corresponds to a total zinc coating weight of approximately 270g/m² on both sides, but our product specifically offers a 120g/m² per side (or per specification) to provide excellent corrosion protection while maintaining cost-effectiveness. The coil is ideal for applications requiring long-term durability in moderate to high humidity environments, such as roofing, wall panels, air ducts, and automotive components.
Key Product Features & Technical Specifications
- Standard Compliance: Fully meets ASTM A653/A653M specification for hot-dip galvanized steel sheet in coils.
- Zinc Coating Weight: 120g/m² (triple-spot test) – provides excellent corrosion resistance and long service life.
- G90 Classification: Equivalent to 0.90 oz/ft² total coating (both sides), ensuring a thick, durable zinc layer.
- Thickness Tolerance: ±0.02mm for precise fabrication and consistent quality.
- Width Options: Customizable from 600mm to 1500mm, with standard widths like 1000mm, 1200mm, and 1250mm available.
- Coil Weight: 3–8 tons per coil, depending on width and gauge, to suit different handling and processing needs.
- Surface Finish: Bright spangle or regular spangle, with optional passivation, oiling, or anti-fingerprint treatment.
- Mechanical Properties: Yield strength ≥ 280MPa, tensile strength ≥ 380MPa, elongation ≥ 20% (typical for commercial quality).
Product Specification Table
| Parameter | Value |
|---|---|
| Standard | ASTM A653 / A653M |
| Grade | G90 (0.90 oz/ft² total) |
| Thickness | 0.5 mm (0.0197 inches) |
| Zinc Coating (per side) | 120 g/m² |
| Width Range | 600–1500 mm (customizable) |
| Coil Inner Diameter | 508 mm or 610 mm |
| Surface Treatment | Passivation, oiling, or anti-fingerprint (optional) |
| Application | Roofing, wall panels, automotive parts, air ducts, general fabrication |
Advantages & Customer Benefits
- Corrosion Resistance: The 120g/m² zinc coating provides long-lasting protection against rust, even in humid or coastal environments, reducing maintenance costs.
- Formability: The steel substrate is specially selected for excellent bending, stamping, and roll-forming performance, making it suitable for complex shapes.
- Consistent Quality: Our ISO9001-certified production process ensures tight thickness control and uniform coating across the entire coil, minimizing waste in cutting and stamping.
- Global Compliance: Meets ASTM A653 standard, widely accepted in North America, Europe, and other regions, facilitating international trade.
- Cost-Effective: The G90 coating weight offers a balanced approach between cost and corrosion protection, ideal for many industrial applications.
- Reliable Supply: With an annual export value exceeding US$50 million and a team of 51–100 experienced professionals, we ensure timely delivery and stable inventory.
At Hemaokang Steel, we understand that quality and reliability are paramount. Our factory is located in Liaocheng, Shandong, China, a major steel production hub, allowing us to source raw materials efficiently and maintain competitive pricing. Since our establishment in 2025, we have grown rapidly to serve customers in over 15 major markets worldwide, including North America, South America, Europe, Africa, and Asia. Our ISO9001 certification reflects our commitment to continuous improvement and customer satisfaction.
We offer flexible order quantities, from trial volumes to full container loads, and provide customized packaging (waterproof paper, steel strapping, and edge protection) to ensure your coils arrive in perfect condition. Our dedicated sales team is available to discuss your specific requirements, including width, coating weight, surface finish, and packaging preferences. Contact us today to request a quotation or to place your order. Let Hemaokang Steel be your reliable partner for high-quality galvanized steel coils.
Frequently Asked Questions (FAQ)
-
What does G90 mean in ASTM A653?
G90 refers to the zinc coating weight class, equivalent to 0.90 oz/ft² total on both sides. For a 0.5mm coil, the typical coating weight per side is approximately 120g/m² (total ~240g/m²), providing good corrosion resistance. -
Can this coil be used for exposed roofing?
Yes, the 120g/m² coating is suitable for roofing applications in moderate environments. For highly corrosive coastal areas, we recommend a heavier coating (e.g., G115 or G140). -
What is the minimum order quantity (MOQ)?
Our MOQ is typically 1 container (around 20–25 tons), but we can accommodate smaller trial orders for first-time customers. Please contact us for details. -
Do you offer different surface finishes?
Yes, we offer bright spangle, regular spangle, and minimized spangle finishes. Anti-fingerprint and oiling treatments are available upon request. -
How is the zinc coating weight tested?
We perform triple-spot testing according to ASTM A653, using the gravimetric method. A test certificate is provided with each shipment. -
Can you provide slitting or cut-to-length services?
Yes, we offer slitting to custom widths (minimum 50mm) and cut-to-length sheets. Additional processing costs may apply. -
What is the typical lead time?
For standard sizes, lead time is 2–3 weeks from order confirmation. For customized widths or special finishes, it may be 3–4 weeks. -
Do you have stock in overseas warehouses?
Currently, we ship directly from our factory in China. We do not maintain overseas stock, but we can arrange fast delivery via sea or air freight.
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