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| Property | Parameter | Description |
|---|---|---|
| Product Name | Q355B H-Beam | Hot rolled structural steel H-beam |
| Material Grade | Q355B (S355JR, A572 Gr.50) | High strength low alloy structural steel |
| Standard Compliance | GB/T 11263, EN 10025-2, ASTM A992 | International structural steel standards |
| Carbon (C) | ≤0.20% | Carbon content per GB/T 1591 |
| Manganese (Mn) | ≤1.60% | Manganese content specification |
| Phosphorus (P) | ≤0.025% | Phosphorus content limit |
| Sulfur (S) | ≤0.025% | Sulfur content limit |
| Silicon (Si) | ≤0.55% | Silicon content specification |
| Tensile Strength | 490-630 MPa | Per GB/T 1591 standard requirements |
| Yield Strength | ≥355 MPa | Minimum yield strength at room temperature |
| Elongation | ≥20% | Elongation after fracture (thickness ≤16mm) |
| Dimension Range | H100×100 to H900×300mm | Web height × flange width, length 6-12m |
| Surface Finish | Hot rolled, shot blasted | Black or primer painted surface |
| Application | Building structures, bridges, industrial plants | Load-bearing structural components |
| Certification | ISO 9001, EN 10204 3.1/3.2, Mill Test Certificate | Quality assurance documentation |
| Packaging | Steel strapping in bundles | Waterproof wrapping for export |
| MOQ | 25 tons per specification | Minimum order quantity requirement |
Technical Expertise Made the Difference
Needed 31 tons of Q355B H-beams (350×175×7×11mm) for a complex roof truss system in Manchester. SteelPro's engineering team provided valuable input on optimizing section sizes to reduce weight while maintaining load capacity per BS 5950 calculations. The material's 20% elongation and controlled Si content (0.48%) ensured excellent fabrication characteristics. Custom length cutting to 8.5 meters was executed perfectly. Their technical knowledge of both Chinese GB and British standards was invaluable for our dual-certification requirements.
Needed 31 tons of Q355B H-beams (350×175×7×11mm) for a complex roof truss system in Manchester. SteelPro's engineering team provided valuable input on optimizing section sizes to reduce weight while maintaining load capacity per BS 5950 calculations. The material's 20% elongation and controlled Si content (0.48%) ensured excellent fabrication characteristics. Custom length cutting to 8.5 meters was executed perfectly. Their technical knowledge of both Chinese GB and British standards was invaluable for our dual-certification requirements.
