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| Property | Parameter | Description |
|---|---|---|
| Product Name | Channel Steel for Construction | Hot rolled structural channel steel (U-channel / C-channel) for building and construction applications |
| Material Grade | Q235B / Q345B / SS400 / A36 / S235JR / S275JR | Equivalent grades: ASTM A36, EN S235JR, JIS SS400, GB Q235B |
| Standard Compliance | GB/T 706, ASTM A36, EN 10025-2, JIS G3101 | Manufactured in accordance with international and Chinese national standards |
| Carbon Content (C) | ≤ 0.20% | Ensures good weldability and moderate strength for structural use |
| Manganese Content (Mn) | 0.30% – 1.60% | Enhances tensile strength and hardness |
| Silicon Content (Si) | ≤ 0.35% | Acts as deoxidizer, improves strength |
| Phosphorus (P) / Sulfur (S) | P ≤ 0.035% / S ≤ 0.035% | Controlled to ensure toughness and reduce brittleness |
| Tensile Strength | 370 – 530 MPa | Per ASTM A36: 400–550 MPa; per GB Q235B: 370–500 MPa |
| Yield Strength | 235 – 345 MPa | Q235B ≥ 235 MPa; Q345B ≥ 345 MPa; A36 ≥ 250 MPa |
| Elongation | ≥ 20% | Measured on standard gauge length per respective material standards |
| Size Range | Height: 50 – 400 mm; Web width: 32 – 104 mm; Web thickness: 4.4 – 14.5 mm | Standard length 6 m / 9 m / 12 m; custom lengths available |
| Surface Finish | Hot rolled black / Galvanized / Painted | Optional hot-dip galvanizing (≥ 60 μm) or primer coating for corrosion resistance |
| Tolerance | Per GB/T 706 or ASTM A6/A6M | Strict dimensional tolerance control on height, width, thickness, and straightness |
| Application | Building frames, bridges, industrial plants, support structures, infrastructure | Widely used in steel structure construction, mezzanine floors, and load-bearing frameworks |
| Certification | ISO 9001, SGS, BV, CE, Mill Test Certificate (EN 10204 3.1) | Third-party inspection and testing available upon request |
| Packaging | Bundled with steel strips, waterproof paper or plastic caps on ends | Seaworthy packaging suitable for container or bulk vessel shipment |
| MOQ | 25 Metric Tons | Smaller trial orders negotiable; mixed sizes accepted per container |
Minor Labeling Issue But Resolved Professionally
Ordered 25 tonnes of S235JR channels in mixed sizes for a warehouse extension in Birmingham. When the shipment arrived, about 15% of the bundles had incorrect size labels — the actual dimensions were correct when measured, but the mislabeling caused confusion during unloading and sorting. We raised this with their team and they responded within 24 hours, issued a formal corrective action report, and credited us for the extra labor time. The steel quality itself was fine and met EN 10279. Fair resolution overall.
Ordered 25 tonnes of S235JR channels in mixed sizes for a warehouse extension in Birmingham. When the shipment arrived, about 15% of the bundles had incorrect size labels — the actual dimensions were correct when measured, but the mislabeling caused confusion during unloading and sorting. We raised this with their team and they responded within 24 hours, issued a formal corrective action report, and credited us for the extra labor time. The steel quality itself was fine and met EN 10279. Fair resolution overall.
