NEWS
S320GD Galvanized Steel is a high-strength structural galvanized steel grade manufactured in accordance with EN 10346, designed for applications where both mechanical performance and corrosion resistance are required. With a minimum yield strength of 320 MPa, S320GD Galvanized Steel offers a reliable balance between strength, formability, and long-term durability, making it a preferred choice for modern construction and industrial structural projects.
In recent years, structural projects such as steel-frame buildings, light steel structures, warehouses, agricultural facilities, and industrial plants have increasingly relied on S320GD Galvanized Steel to meet higher design loads while maintaining corrosion protection in outdoor or semi-exposed environments. The galvanized zinc coating effectively protects the steel substrate from rust, significantly extending service life and reducing long-term maintenance costs.
From a technical perspective, S320GD Galvanized Steel is produced through a continuous hot-dip galvanizing process, ensuring uniform zinc coating adhesion and thickness. This stable coating performance allows the material to perform well even in humid, coastal, or industrial atmospheres.
- Typical Mechanical Properties of S320GD Galvanized Steel
| Property | Requirement |
|---|---|
| Yield Strength | ≥ 320 MPa |
| Tensile Strength | 390–510 MPa |
| Elongation (A80) | ≥ 17% |
| Standard | EN 10346 |
In structural applications, S320GD Galvanized Steel is often selected over lower-strength grades such as S250GD due to its enhanced load-bearing capability. Compared with higher grades, it still maintains good forming performance, allowing bending, profiling, and roll forming without cracking when processed under proper conditions.
- Common Specifications for Structural Use
| Thickness (mm) | Width (mm) | Zinc Coating |
| 0.8 – 3.0 | 900 – 1500 | Z100 – Z275 |
The demand for S320GD Galvanized Steel continues to grow as engineers and contractors seek materials that comply with structural safety requirements while also providing corrosion resistance without additional surface treatments. Its versatility makes it suitable for purlins, beams, roofing structures, wall systems, and supporting frames.
At GNEE STEEL, S320GD Galvanized Steel is supplied with strict quality control throughout production, inspection, and packaging. Each batch is tested for mechanical properties, coating thickness, and surface quality to ensure consistent performance in real projects. With stable supply capability and rich export experience, GNEE STEEL continues to support global customers with reliable S320GD Galvanized Steel solutions designed for long-term structural performance.
- Available Steel Grade
| Steel grade | Coating | Yield(MPA) | Tensile(MPA) | Elongation(%) |
| DX51D | Z,ZF | -- | 270-500 | 20 |
| DX52D | Z,ZF | 140-300 | 270-420 | 22 |
| DX53D | Z,ZF | 140-260 | 270-380 | 26 |
| DX54D | Z,ZF | 140-220 | 270-350 | 30 |
| S220GD | Z,ZF | 220 | 300 | 18 |
| S250GD | Z,ZF | 250 | 330 | 17 |
| S280GD | Z,ZF | 280 | 360 | 16 |
| S320GD | Z,ZF | 320 | 390 | 15 |
| S350GD | Z,ZF | 350 | 420 | 14 |
| S400GD | Z,ZF | 400 | 470 | -- |
| S450GD | Z,ZF | 450 | 530 | -- |
| S500GD | Z,ZF | 500 | 560 | -- |
