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| Property | Parameter | Description |
|---|---|---|
| Product Name | Structural Steel Channels for Building | Hot-rolled C/U-shaped steel channels used in structural building applications |
| Material Grade | A36 / S235JR / Q235B / SS400 | International equivalents: ASTM A36 ≈ EN S235JR ≈ GB Q235B ≈ JIS SS400 |
| Standard Compliance | ASTM A36, EN 10025-2, GB/T 706, JIS G3192 | Meets major international structural steel channel standards |
| Chemical Composition (C) | ≤ 0.26% | Carbon content controlling weldability and hardness |
| Chemical Composition (Mn) | ≤ 1.50% | Manganese enhances strength and toughness |
| Chemical Composition (P/S) | P ≤ 0.040%, S ≤ 0.050% | Phosphorus and sulfur limits per ASTM A36 / EN 10025-2 |
| Chemical Composition (Si) | ≤ 0.40% | Silicon for deoxidation and strength improvement |
| Tensile Strength | 400–550 MPa | Per ASTM A36 (≥ 400 MPa) and EN 10025-2 S235JR (360–510 MPa) |
| Yield Strength | ≥ 235–250 MPa | Minimum yield strength per EN S235JR / ASTM A36 at ambient temperature |
| Elongation | ≥ 20–26% | Minimum elongation at fracture (gauge length 50 mm / 200 mm) |
| Dimension Range | Web Height: 50–400 mm; Flange Width: 32–115 mm; Length: 6–12 m | Standard channel sizes; custom lengths and sections available on request |
| Surface Finish | Hot-rolled, mill scale; optional shot-blasted or primed | Standard mill finish; anti-rust primer coating available for building use |
| Application | Building frames, floor joists, roof purlins, column supports, curtain wall framing | Widely used in commercial, industrial, and residential structural construction |
| Certification | ISO 9001, CE Marking (EN 1090), Mill Test Certificate (EN 10204 3.1/3.2) | Third-party inspection and material traceability documentation available |
| Packaging | Bundle with steel strapping; 2–5 MT per bundle | Seaworthy export packing; waterproof wrapping available for overseas shipment |
| MOQ | 25 MT per order | Mixed sizes accepted; spot stock and custom rolling both available |
Initial surface finish issue — resolved promptly by supplier
We ordered 35 tonnes of C-channel C100×8 with hot-dip galvanized finish to ASTM A123 for a curtain wall bracing system in Chicago. On receipt, roughly 15% of pieces showed uneven zinc coating below the 85 µm minimum in localized spots. We raised this with the account manager immediately. The supplier arranged a replacement shipment for the affected pieces within 9 business days at no additional cost and provided a corrective action report. The replacement batch passed our thickness gauge checks across the board. Issue was handled professionally; we're willing to try a second order based on how it was resolved.
We ordered 35 tonnes of C-channel C100×8 with hot-dip galvanized finish to ASTM A123 for a curtain wall bracing system in Chicago. On receipt, roughly 15% of pieces showed uneven zinc coating below the 85 µm minimum in localized spots. We raised this with the account manager immediately. The supplier arranged a replacement shipment for the affected pieces within 9 business days at no additional cost and provided a corrective action report. The replacement batch passed our thickness gauge checks across the board. Issue was handled professionally; we're willing to try a second order based on how it was resolved.
