High-Performance ERW Carbon Steel Pipes: Precision-Engineered for Structural & Fluid Transport Applications.
ERW Welded Steel Pipes: Multi-Standard Compliance & Robust Construction
Manufactured from low/medium-carbon steel via Electric Resistance Welding (ERW), these pipes combine cost efficiency with high yield strengths (195-345 MPa). Available in 1/8″–6″ diameters (6–165mm) and 2.0–5.5mm wall thicknesses, they meet ASTM A53 (fluid transport) and ASTM A500 (structural) standards. Bare or epoxy-coated surfaces suit indoor/outdoor use.
Material Grades & Key Standards
| Grade | Equivalent Standards | Yield Strength (MPa) | Common Applications |
|---|---|---|---|
| Q195/S195 | ASTM A53 Gr.A, BS1387 | 195–215 | Low-pressure water lines |
| Q235/A500A | ASTM A53 Gr.B, EN10255 | 235–255 | Scaffolding, handrails |
| Q345/A500B | ASTM A500 Gr.C, JIS G3444 | 345–365 | Seismic building frameworks |
Certifications:
- ISO 9001:2015 Quality Management
- EN 10204 3.1/3.2 Mill Test Certificates
Dimensional Specifications & Weight Chart
Standard Sizes (Imperial/Metric)
| Nominal Size (Inch) | OD (mm) | Light Wall (Thickness/mm) | Weight (kg/m) | Heavy Wall (Thickness/mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 1/2″ | 21.25 | 2.75 | 1.26 | 3.25 | 1.45 |
| 2″ | 60 | 3.5 | 4.88 | 4.5 | 6.16 |
| 6″ | 165 | 4.5 | 17.81 | 5.5 | 21.63 |
Customization:
- Cut-to-Length: ±2mm accuracy (max 18m)
- End Prep: Plain, threaded (NPT/BSPT), or bevelled (37.5°)
Mechanical & Chemical Properties
| Property | Q195 | Q235 | Q345 |
|---|---|---|---|
| Tensile Strength | 330–450 MPa | 375–500 MPa | 470–630 MPa |
| Elongation | ≥23% | ≥21% | ≥17% |
| Carbon Content | ≤0.15% | ≤0.20% | ≤0.20% |
| Manganese | 0.25–0.55% | 0.35–0.65% | 1.20–1.60% |
Surface Treatments:
- Galvanized: 80–100μm coating (ISO 1461)
- 3PE Anti-Corrosion: 1.8–3.5mm polyethylene layer
Applications by Industry
- Construction:
- Scaffolding: 2″ Q235 pipes with 3.5mm walls (BS 1139 compliant).
- HVAC Ducts: 4″ Q195 galvanized tubes (ASTM A795).
- Oil & Gas:
- Water Injection Lines: 6″ Q345 ERW pipes (API 5L PSL1).
- Agriculture:
- Irrigation Systems: 3″ Q235 epoxy-coated pipes (AWWA C200).
Competitive Advantages
- MOQ: 5 tons (cut/thread services available)
- Lead Time: 12–25 days (stock sizes ship in 7 days)
- Testing: Hydrostatic (30 MPa), UT weld inspection
Packing And Delivery
