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| Property | Parameter | Description |
|---|---|---|
| Product Name | High-Strength C-Shaped Steel | Cold-formed high-strength C-channel structural steel section |
| Material Grade | Q345B / S355JR / ASTM A572 Gr.50 | High-strength low-alloy structural steel with international equivalent grades |
| Standard Compliance | GB/T 6725, EN 10162, ASTM A1011 | Compliant with Chinese, European, and American cold-formed steel standards |
| Carbon (C) | ≤ 0.20% | Controlled carbon content for optimal weldability and strength |
| Manganese (Mn) | ≤ 1.60% | Enhances tensile strength and hardenability |
| Silicon (Si) | ≤ 0.55% | Improves strength and deoxidation during steelmaking |
| Phosphorus (P) | ≤ 0.025% | Strictly controlled to prevent cold brittleness |
| Sulfur (S) | ≤ 0.025% | Minimized to ensure ductility and toughness |
| Tensile Strength | 470 - 630 MPa | Per GB/T 1591 / EN 10025-2 standard requirements |
| Yield Strength | ≥ 345 MPa | Minimum yield point ensuring structural load-bearing capacity |
| Elongation | ≥ 20% | Measured on standard gauge length A5, indicating good ductility |
| Dimensions | Height: 80 - 300 mm; Width: 40 - 100 mm; Thickness: 1.5 - 6.0 mm; Length: 6 - 12 m | Customizable C-channel profiles per project specifications |
| Surface Finish | Hot-dip galvanized / Painted / Black (mill finish) | Galvanized coating thickness 60 - 275 g/m² available for corrosion resistance |
| Application | Steel structure framing, purlins, wall girts, solar mounting systems, industrial buildings | Widely used in prefabricated construction and light steel structures |
| Certification | ISO 9001, CE, SGS, BV | Third-party quality certification ensuring international trade compliance |
| Packaging | Bundled with steel strips, waterproof paper wrapped, tagged | Seaworthy packaging suitable for container or bulk vessel shipment |
| MOQ | 5 Metric Tons | Smaller trial orders negotiable for new customers |
Initial Coating Issue Resolved After Communication
Ordered 500 pieces of galvanized C-purlin, 150mm x 60mm x 2.0mm, Z275 coating for a coastal shed project. First batch of about 80 pieces had zinc coating below Z250 in spot checks, which concerned us given the marine environment. Raised the issue with their QC department — they responded quickly, provided additional test data, and shipped replacement pieces for the affected batch at no charge. Remaining stock tested fine. Problem was handled professionally, but it shouldn't have happened in the first place. Would give them another chance.
Ordered 500 pieces of galvanized C-purlin, 150mm x 60mm x 2.0mm, Z275 coating for a coastal shed project. First batch of about 80 pieces had zinc coating below Z250 in spot checks, which concerned us given the marine environment. Raised the issue with their QC department — they responded quickly, provided additional test data, and shipped replacement pieces for the affected batch at no charge. Remaining stock tested fine. Problem was handled professionally, but it shouldn't have happened in the first place. Would give them another chance.
