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Square & Rectangular Steel Tube
ERW welded or cold-formed tubes with optimized section properties. 20% lighter than H-beams at equal load capacity. Ideal for building frames, machinery, and solar structures. |
Product Name: High-Strength Cold-Formed Hollow Sections
Overview
ERW welded or cold-formed tubes with optimized section properties. 20% lighter than H-beams at equal load capacity. Ideal for building frames, machinery, and solar structures.
| Parameter | Square Tube | Rectangular Tube |
|---|---|---|
| Section Size | 20×20-500×500mm | 30×20-600×400mm |
| Wall Thickness | 1.0-16.0mm (±0.1mm) | 1.2-20.0mm (±0.15mm) |
| Material Grade | ASTM A500 Gr.C/Gr.D | EN 10219 S235JRH/S355J2H |
| Yield Strength | ≥345MPa (Gr.C) | ≥355MPa (S355J2H) |
| Straightness | ≤1.5mm/m (EN 10219) | ≤1.2mm/m (EN 10219) |
| Surface Finish | HDG/Sandblasted/Powder | Passivated/Brushed |
| Weld Quality | ≥95% Base Metal Strength | UT Class B (ISO 10893) |
1. Structural Efficiency
40% higher bending resistance vs solid sections
Corner radius optimization reduces stress concentration
2. Connection Solutions
Pre-punched holes (±0.5mm)
Milled ends (flatness ≤0.3mm)
3. Corrosion Protection
Hot-dip galvanized: Z275 coating (1500hrs salt spray)
Stainless: 316L with PREN≥35
4. Global Compliance
USA: ASTM A500
EU: EN 10219
Japan: JIS G3466
RUNYING STEEL GROUP
Tel：86-315-2199609
Fax：86-315-5538212
E-mail：admin@tsrysteel.com
Central Plaza, Tangshan City
website：lo.tsrysteel.com
Alibaba：https://tsrunying.en.alibaba.com
