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| Property | Parameter | Description |
|---|---|---|
| Product Name | Structural Steel for Building Enclosure | High-strength steel profiles used in building envelope and enclosure systems |
| Steel Grade | S235 / S275 / S355 / Q235 / Q345 | Common structural grades suitable for enclosure framing and cladding support |
| Size Range | Thickness: 1.5–25 mm; Width: 50–2000 mm; Length: 1000–12000 mm | Custom dimensions available upon request for specific enclosure designs |
| Yield Strength | 235–460 MPa | Minimum yield strength ensuring structural integrity under load |
| Tensile Strength | 360–630 MPa | Ultimate tensile strength for enclosure load-bearing applications |
| Elongation Rate | ≥17% | Ensures ductility and deformation capacity under dynamic loads |
| Carbon Content | ≤0.22% | Low carbon content improves weldability for enclosure assembly |
| Phosphorus Content | ≤0.035% | Controlled phosphorus level to maintain toughness and reduce brittleness |
| Sulfur Content | ≤0.035% | Low sulfur ensures improved impact resistance and surface quality |
| Surface Treatment | Hot-dip galvanized / Painted / Bare | Corrosion protection options tailored to outdoor enclosure environments |
| Moisture Resistance | Salt spray resistance ≥500 h (galvanized) | Suitable for humid and coastal building enclosure applications |
| Impact Toughness | ≥27 J at -20°C | Charpy V-notch test value ensuring performance in cold climates |
| Packaging | Steel bundled with strapping; waterproof wrapping optional | Standard export packaging; fumigation-free wooden pallet available |
| Storage Conditions | Dry, ventilated warehouse; avoid direct contact with ground | Recommended storage temperature: -30°C to 50°C; humidity ≤80% |
| Application | Curtain walls, steel cladding frames, roof purlins, wall girts, enclosure bracing | Widely used in commercial, industrial, and residential building enclosures |
| Certification | ISO 9001, CE Marking, GB/T 700, EN 10025 | Compliant with international structural steel quality standards |
| MOQ | 5 tons | Minimum order quantity per grade and section type |
| Supply Capacity | 5000 tons/month | Stable supply capacity supporting large-scale construction projects |
Initial dimension variance flagged — issue resolved satisfactorily
Our first order of C200 cold-formed purlins (1.8mm wall thickness, 15 tonnes) showed flange width variance of ±3mm on roughly 10% of pieces, which exceeded our EN 10162 tolerance spec. We raised this immediately with the supplier. To their credit, they responded within one business day, arranged third-party re-inspection, and replaced the non-conforming pieces within 12 days at no extra cost. Subsequent delivery was fully within spec. The resolution was handled professionally. We're cautiously proceeding with a second order — will update if quality improves consistently.
Our first order of C200 cold-formed purlins (1.8mm wall thickness, 15 tonnes) showed flange width variance of ±3mm on roughly 10% of pieces, which exceeded our EN 10162 tolerance spec. We raised this immediately with the supplier. To their credit, they responded within one business day, arranged third-party re-inspection, and replaced the non-conforming pieces within 12 days at no extra cost. Subsequent delivery was fully within spec. The resolution was handled professionally. We're cautiously proceeding with a second order — will update if quality improves consistently.
