Product Name: Straight‑Seam Electric‑Resistance‑Welded (ERW) Steel Pipe
Introduction
Straight‑Seam ERW Steel Pipe is produced by forming flat steel strip into a cylindrical shape and joining the edges with a single, continuous electric resistance weld. The longitudinal seam weld provides high consistency and minimal defect rates. These pipes offer precise dimensions, smooth internal and external finishes, and are cost‑effective for conveying fluids, structural applications, and mechanical uses where the pressure and corrosion demands are moderate.
Key Specifications
| Specification | Details |
|---|---|
| Applicable Standards | ASTM A53 Gr. B, API 5L PSL1/PSL2, EN 10217‑1 |
| Material Grades | Carbon steel (C ≤ 0.30%) |
| Outer Diameter (OD) | 1/2″–24″ (21.3 – 609.6 mm) |
| Wall Thickness | SCH 10–SCH 160 (1.65 – 25.4 mm) |
| Length | 6–12 m (custom up to 18 m) |
| Tensile Strength | 350–550 MPa |
| Yield Strength | ≥ 245 MPa |
| Elongation (min) | ≥ 20 % |
| Straightness Tolerance | ≤ 1% of total length |
| Surface Finish | Clean‑cut ends; optional shot‑blast, painting, or galvanizing |
Custom diameters, schedules, and grades are available upon request.
Features & Advantages
Uniform Seam Quality: Single longitudinal weld offers consistent metallurgical properties and low defect rates.
Tight Dimensional Control: ERW process ensures precise OD, wall thickness, and straightness for reliable fit‑up.
Cost‑Effective Production: Efficient continuous‑weld line provides competitive pricing for large volumes.
Versatile Finishes & Ends: Available with beveled, plain, threaded, or grooved ends and multiple surface treatments.
Good Weldability & Joinability: Standard carbon chemistry supports field welding, flanging, and fabrications.
Applications
Fluid Conveyance: Water, oil, gas, and compressed air distribution lines.
Structural Uses: Handrails, scaffolding, bollards, and building frames.
Mechanical Systems: Hydraulic lines, conveyor rollers, and machine guard rails.
Fire Protection: Sprinkler mains and standpipe systems.
General Fabrication: Furniture frames, fencing, and architectural accents.
Packaging & Delivery
Bundling: Pipes are bundled by size and length, strapped with steel bands, and secured on treated wooden skids.
End Protection: Plastic caps or seal tape prevents debris ingress and protects edges.
Surface Protection: Optional light oiling or primer; galvanized coating for outdoor durability.
Lead Time: Standard production and shipment within 15–25 days after order confirmation; expedited delivery (10–15 days) available for urgent orders.
Why Choose Our Straight‑Seam ERW Pipes?
Advanced ERW Mills: State‑of‑the‑art forming and welding lines deliver consistent seam integrity and dimensional accuracy.
Rigorous Quality Control: 100 % nondestructive seam testing (eddy‑current/ultrasonic), dimensional inspection, and mechanical verification per ASTM/API/EN.
Full‑Service Fabrication: In‑house profiling, notching, threading, and end‑preparation to your specifications.
Technical Support: Engineering team assists with line‑design calculations, welding guidelines, and installation best practices within 12 hours.
Contact Us
For reliable, precision‑made Straight‑Seam ERW Steel Pipes tailored to your conveying, structural, or mechanical requirements, please contact our sales department. We're committed to delivering high‑quality piping solutions and exceptional service for your next project.
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