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Electric Resistance Welded Straight Pipe
For applications demanding reliable and cost-effective fluid and gas transportation, our high-quality Electric Resistance Welded (ERW) Straight Pipe offers an outstanding solution. This pipe is manufactured by forming steel strips and joining the longitudinal seam through the precise application of heat and pressure via electric resistance welding. This process results in a robust, uniform, and dimensionally accurate product known for its excellent strength and weld integrity. It serves as an ideal choice for a wide array of industrial uses, including structural frameworks, mechanical components, and low to medium-pressure conveyance systems. Our Straight Seam Welded Steel Tube is specifically engineered for durability and performance, providing a seamless alternative to more expensive seamless pipes where specifications allow. Similarly, our ERW Longitudinal Welded Pipe is a testament to modern manufacturing efficiency, offering superior consistency in wall thickness and roundness. The versatility of this product category, including variants like the Straight Welded Seam Steel Pipe and the Longitudinal Seam Welded Tube, makes it indispensable for construction, infrastructure, and manufacturing projects that require dependable tubular products.
The manufacturing excellence of our Electric Resistance Welded Straight Pipe is reflected in its comprehensive and precise technical specifications. We adhere to stringent international standards to ensure every pipe meets rigorous quality benchmarks for performance and safety. Below are the detailed product parameters that define our offering.
Key Specifications & Features
- Manufacturing Standard: ASTM A53, ASTM A500, ASTM A513, EN 10219, EN 10255, JIS G3444, JIS G3475.
- Material Grades: GR. A, GR. B, GR. C, S235JR, S275JR, S355JR, STK400, STK500.
- Welding Process: High-Frequency Electric Resistance Welding (HF-ERW).
- Surface Finish: Black (as-welded), Galvanized (hot-dip or electroplated), Varnished, Oiled.
- Ends: Plain End (PE), Beveled End (BE), Threaded End (TE).
- Testing & Inspection: Hydrostatic Test, Eddy Current Test, Ultrasonic Test, Flattening Test, Bend Test.
Detailed Dimensional Data
| Outer Diameter (OD) | Wall Thickness (WT) | Length | Tolerance (OD) | Tolerance (WT) |
|---|---|---|---|---|
| 1/2 inch (21.3 mm) to 24 inches (610 mm) | SCH 10, SCH 40, SCH 80, STD, XS | Fixed: 6m, 12m Random: 5m - 12m |
± 0.5% | ± 10% |
| 10 mm to 508 mm | 0.8 mm to 12.7 mm | Fixed: 6m Random: 5.8m - 12.2m |
± 0.3 mm to ± 0.8% | ± 7.5% to ± 12.5% |
Mechanical & Chemical Properties
| Grade / Standard | Yield Strength (min) | Tensile Strength (min) | Elongation (min) | Chemical Composition (Typical - C max) |
|---|---|---|---|---|
| ASTM A53 Gr. B | 240 MPa | 415 MPa | 20% | 0.30% |
| ASTM A500 Gr. C | 345 MPa | 455 MPa | 21% | 0.23% |
| EN 10219 S355J0H | 355 MPa | 470-630 MPa | 22% | 0.22% |
| JIS G3444 STK500 | 500 MPa | 570 MPa | 15% | 0.30% |
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