English 
简体中文 
CN
| Property | Parameter | Description |
|---|---|---|
| Product Name | Structural Steel Angles for Building | Hot-rolled equal and unequal leg steel angle sections used in building construction |
| Material Grade | A36 / S235JR / Q235B / SS400 | A36 (ASTM), S235JR (EN 10025-2), Q235B (GB/T 700), SS400 (JIS G3101); international equivalent grades |
| Standard Compliance | ASTM A36 / EN 10025-2 / GB/T 706 / JIS G3192 | Meets dimensional and mechanical requirements per respective international standards |
| Chemical Composition (C) | ≤ 0.26% (A36) / ≤ 0.17% (S235JR) | Carbon content controlled to ensure weldability and structural integrity |
| Chemical Composition (Mn) | ≤ 1.20% (A36) / ≤ 1.40% (S235JR) | Manganese enhances strength and toughness of the angle section |
| Chemical Composition (P / S) | P ≤ 0.04% / S ≤ 0.05% | Phosphorus and sulfur limits ensure ductility and reduce brittleness |
| Chemical Composition (Si) | ≤ 0.40% | Silicon content for deoxidation and strength improvement |
| Tensile Strength | 400–550 MPa (S235JR) / 400–550 MPa (A36) | Per EN 10025-2 and ASTM A36; minimum 400 MPa for structural reliability |
| Yield Strength | ≥ 235 MPa (S235JR) / ≥ 250 MPa (A36) | Minimum yield strength ensuring load-bearing capacity in building frames |
| Elongation | ≥ 20% (S235JR) / ≥ 20% (A36) | Measured on gauge length L0 = 5.65√S0; ensures ductile behavior under load |
| Leg Size Range | 20×20 mm – 250×250 mm (equal leg) | Unequal leg available from 30×20 mm to 200×125 mm; custom sizes on request |
| Thickness Range | 3 mm – 35 mm | Leg thickness varies by section size per standard dimensional tables |
| Length | 6 m / 9 m / 12 m (standard) / custom | Standard mill lengths; cut-to-length service available per project requirement |
| Surface Finish | Hot-rolled (black) / Galvanized / Primer coated | Mill scale surface standard; hot-dip galvanizing (85 µm min.) available for corrosion protection |
| Application | Building frames, trusses, brackets, purlins, bracing | Widely used in structural steel fabrication, industrial buildings, warehouses, and civil construction |
| Certification | ISO 9001 / Mill Test Certificate (EN 10204 3.1) | Third-party inspection available; certificates traceable to heat and lot number |
| Packaging | Bundle (2–5 MT per bundle) with steel strapping | Bundled with steel strips; wooden dunnage for sea freight; bare or wrapped per buyer request |
| MOQ | 25 MT per grade/size | Mixed sizes accepted within same grade; smaller quantities negotiable for sample orders |
Initial shipment had a length tolerance issue — resolved professionally
Our first order of 15 tonnes of L90×90×9 angles in A572 Gr.50 for a mezzanine structure in Ohio included roughly 5% of pieces cut approximately 15 mm short of the specified 9 m length, which exceeded our acceptable tolerance. I flagged this immediately and the supplier responded within four hours, acknowledged the QC lapse, and arranged a partial replacement shipment at no charge within 10 days. Chemical and mechanical properties on the MTRs were fully compliant throughout. The issue was handled well and we placed a follow-up order, but I am scoring three stars for the first delivery as received rather than as resolved.
Our first order of 15 tonnes of L90×90×9 angles in A572 Gr.50 for a mezzanine structure in Ohio included roughly 5% of pieces cut approximately 15 mm short of the specified 9 m length, which exceeded our acceptable tolerance. I flagged this immediately and the supplier responded within four hours, acknowledged the QC lapse, and arranged a partial replacement shipment at no charge within 10 days. Chemical and mechanical properties on the MTRs were fully compliant throughout. The issue was handled well and we placed a follow-up order, but I am scoring three stars for the first delivery as received rather than as resolved.
