FRAMGANG
Q235B U-channel hot-dip galvanized for structural frames, purlins, supports and heavy racking.
Hot-dip galvanized channel steel is Q235B U-section channel immersed in a molten zinc bath. The thick zinc coating protects the flanges, web and inner corner against corrosion, giving excellent durability in humid, coastal and industrial atmospheres. It is widely used where a strong, corrosion-resistant structural section is required.
Key Advantages
Chemical Composition (Q235B Base)
| Element | C | Mn | Si | P | S | Fe |
|---|---|---|---|---|---|---|
| Content % | 0.12 – 0.20 | 0.30 – 0.70 | ≤ 0.30 | ≤ 0.045 | ≤ 0.045 | Balance |
Mechanical Properties
- Yield strength: ≥ 235 MPa
- Tensile strength: 370 – 500 MPa
- Elongation (δ): ≥ 26 %
- Zinc coating: 45 – 85 μm (≥ 275 g/m²)
- Density: 7.85 g/cm³
Standard Sizes
| Parameter | Range |
|---|---|
| Channel size (h×b) | 50×37 – 300×90 mm |
| Web / flange thickness | 4.5 – 12.5 mm |
| Length | 6 m / 12 m, cut to order |
| Zinc layer | 45 – 85 μm (Z275 or higher) |
| Standard | GB/T 706 / I 10279 / ASTM A36 / ISO 1461 |
Applications
Galvanized channel steel is used for roof purlins and girts, structural framing, heavy-duty racking and shelving, trailer and truck frames, cable tray supports, machine bases, billboard structures, agricultural buildings and general steel construction. For L-section profiles see our hot-dip galvanized angle steel.
Processing & Packaging
Cutting, drilling, punching and bending available. Channels are bundled with steel straps on wooden dunnage, wrapped for sea transport.
Send channel size, thickness, length, zinc layer and quantity — we confirm price within 24 hours.
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