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Help CenterStructural Galvanized Coil S350GD+Z 350MPa Yield Strength 22% Elongation
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Hemaokang Steel (Shandong) Co., Ltd. is proud to offer our premium Structural Galvanized Coil S350GD+Z – a high-strength, durable steel product designed for demanding structural applications. With a minimum yield strength of 350 MPa and an elongation of 22%, this steel coil combines superior load-bearing capacity with excellent formability, making it a reliable choice for construction, automotive, and industrial projects. Our factory, established in 2025, has quickly become a trusted supplier with annual export value exceeding US$50 million, serving markets across North America, South America, Europe, Asia, Africa, and Oceania. Every coil is produced under strict ISO9001 quality management, ensuring consistent performance and long-term corrosion resistance through hot-dip galvanization.
Key Features & Technical Specifications
- High Strength-to-Weight Ratio: Minimum yield strength of 350 MPa allows for lighter structures without compromising safety.
- Excellent Ductility: 22% elongation ensures easy bending, forming, and stamping during fabrication.
- Superior Corrosion Protection: Hot-dip galvanized zinc coating (Z100, Z140, Z180, Z275, or custom) provides long-lasting resistance against rust and environmental damage.
- Consistent Quality: Produced under ISO9001 certified processes with strict dimensional control.
- Customizable Dimensions: Thickness from 0.3 mm to 3.0 mm, width from 600 mm to 1500 mm, coil weight up to 15 tons.
- Wide Range of Applications: Ideal for structural steel beams, roof panels, wall cladding, automotive chassis parts, and general fabrication.
| Parameter | Value | Notes |
|---|---|---|
| Steel Grade | S350GD+Z | Structural grade per EN 10346 |
| Yield Strength | ≥ 350 MPa | Longitudinal direction |
| Tensile Strength | 420 – 520 MPa | Typical range |
| Elongation | ≥ 22% | A80 gauge length |
| Zinc Coating | Z100 – Z275 (g/m²) | Customizable per request |
| Surface Finish | Regular spangle, mini spangle, or zero spangle | Optional |
Advantages for Your Business
- Reduced Material Costs: Higher strength allows thinner gauges, lowering transportation and handling expenses.
- Faster Fabrication: Excellent ductility reduces cracking and tool wear, enabling faster production cycles.
- Longer Service Life: Galvanized coating protects against rust, even in harsh environments, reducing maintenance costs.
- Global Compliance: Meets international standards (EN 10346, JIS G3302, ASTM A653 equivalent) – suitable for projects worldwide.
- Reliable Supply: As a young but rapidly growing company with US$50M+ annual export and 51–100 employees, we ensure timely delivery and flexible order quantities.
Our S350GD+Z structural galvanized coil is the preferred choice for engineers and contractors who demand strength, formability, and corrosion resistance in one package. Whether you are manufacturing roof trusses, wall panels, structural tubing, or automotive components, this product delivers consistent performance batch after batch.
Trust Hemaokang Steel for Your Supply Chain
Since our founding in 2025, Hemaokang Steel (Shandong) Co., Ltd. has been dedicated to providing high-quality steel solutions to customers across 15+ major markets including North America, Europe, Southeast Asia, Africa, and Oceania. Our ISO9001 certification guarantees that every coil undergoes rigorous testing – from mechanical properties to coating thickness and surface appearance. With an annual export value between US$50 million and US$100 million, we have the capacity and expertise to handle large-scale orders while maintaining personalized service. Our team of 51–100 experienced professionals is ready to support your project with technical data, sample requests, and customized packaging.
Contact us today to request a quote, ask for a mill test certificate, or discuss your specific requirements. Let Hemaokang Steel be your reliable partner for structural galvanized steel coils.
Frequently Asked Questions (FAQ)
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Q: What is the difference between S350GD+Z and regular galvanized steel?
A: S350GD+Z is a structural grade with a guaranteed minimum yield strength of 350 MPa, which is significantly higher than commercial grades (e.g., DX51D). This makes it suitable for load-bearing applications. -
Q: Can I get a specific zinc coating weight?
A: Yes, we offer Z100, Z140, Z180, Z275, and other coating weights upon request. Please specify your requirement. -
Q: What is the typical lead time for an order?
A: For standard sizes and quantities, lead time is usually 15–30 days. Customized orders may require 30–45 days. Contact our sales team for exact timelines. -
Q: Is this coil suitable for outdoor structural use?
A: Yes, the hot-dip galvanized coating provides excellent corrosion resistance for outdoor environments. However, for extremely aggressive conditions (e.g., coastal or chemical), we recommend a heavier coating or additional painting. -
Q: Do you provide a mill test certificate?
A: Absolutely. Every shipment comes with a mill test certificate (EN 10204 type 3.1) upon request, confirming mechanical properties and chemical composition. -
Q: What is the minimum order quantity (MOQ)?
A: The MOQ is typically 25 tons per size. For smaller quantities, please contact us to discuss availability. -
Q: Can I get samples before placing a bulk order?
A: Yes, samples are available. We can provide small cut pieces (approx. 200mm x 200mm) for testing. Freight charges may apply for samples. -
Q: How do you pack the coils for export?
A: Standard export packing includes inner waterproof paper, steel strapping, and outer steel or wooden packaging to protect against damage during transit. Custom packing is available upon request.
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