High-Performance ERW Steel Pipes: Precision-Engineered for Fluid Transport & Structural Systems.
ERW Steel Tubing Overview: API 5L-Compliant Solutions for Industrial Demands.
Electric Resistance Welded (ERW) steel pipes deliver cost-effective, high-strength performance for low-pressure fluid transfer and structural frameworks. Available in 21.3–660 mm OD (½”–26″) with wall thicknesses from 1.0–17.5 mm (20–635 mil), these pipes meet API 5L PSL1/PSL2, ASTM A53, and EN10219 standards. Custom lengths from 0.5–22 meters (SRL/DRL) accommodate industrial rigging needs.
Key Specifications & Certifications
- Material Grades:
Standard Grades Yield Strength (MPa) API 5L PSL1 Gr.A (205), X42 (290) 205–555 API 5L PSL2 X60 (415), X70 (485) 415–760 ASTM A53 Gr.B (240) 240 - End Prep: Plain/beveled ends (ASME B16.25) or threaded (NPT, BSP).
- Coatings: Galvanized (ISO 1461), 3PE anti-corrosion, or epoxy-painted.
Dimensional Range & Mechanical Properties
| OD (mm) | Wall Thickness (mm) | Max Pressure (psi) | Typical Applications |
|---|---|---|---|
| 33.4 | 2.1–4.0 | 1,200 | HVAC condensate lines |
| 73.0 | 3.0–7.75 | 2,450 | Agricultural irrigation systems |
| 159.0 | 3.25–10.0 | 4,800 | Structural piling foundations |
Customization:
- Precision Cutting: ±1.5 mm tolerance (CNC-controlled).
- Thread Types: STC, LTC, BTC (API 5B compliant).
Advanced ERW Manufacturing Process
- Material Prep:
- Uncoiling & leveling hot-rolled coils (HRC 330–570).
- Edge milling for ±0.1 mm weld alignment.
- Forming & Welding:
- High-frequency induction welding (20–450 kHz).
- Seam normalization at 900–930°C (1650–1706°F).
- Quality Control:
- Dual ultrasonic testing (AWS D1.1 compliant).
- Hydrostatic testing at 1.5x working pressure (API 5C5).
Material Chemistry & Performance Data
| Grade | Carbon (C) | Manganese (Mn) | Tensile Strength (MPa) |
|---|---|---|---|
| X42 | ≤0.26% | 1.35% max | 415–760 |
| X60 | ≤0.22% | 1.65% max | 520–760 |
| A53B | 0.30% max | 1.20% max | 330–500 |
Certifications:
- ISO 9001:2021 Quality Management.
- NACE MR0175: Sour service compatibility (H₂S ≤15 ppm).
Applications by Industry
- Oil & Gas:
- API 5L X52 ERW pipes for gathering lines (30–600 psi).
- Construction:
- ASTM A500 Gr.C square tubing for seismic bracing.
- Waterworks:
- 3PE-coated 219 mm OD pipes for municipal supply.
Competitive Advantages
- MOQ: 10 tons (cut-to-length + threading services).
- Lead Time: 15–30 days (stock sizes ship in 7 days).
- Testing Reports: Mill-certified EN 10204 3.1/3.2.
Packing And Delivery
