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Shallow Wall Straight Seam Welded Pipe
Shallow Wall Straight Seam Welded Pipe is a specialized type of welded steel tubing engineered for applications where weight and material efficiency are critical. This product is distinguished by its precisely controlled, reduced wall thickness along the entire length of the pipe, achieved through advanced longitudinal seam welding technology. It offers an excellent strength-to-weight ratio, making it a cost-effective solution for structural frameworks, light-duty mechanical systems, conveyor rollers, and certain fluid transport applications where high-pressure resistance is not the primary concern. For projects requiring even more refined specifications, we also offer related products such as Light Wall Longitudinal Welded Steel Tube, Slim Wall Straight Seam Welded Pipe, Low Thickness Longitudinal Welded Tube, and Fine Wall Straight Seam Steel Pipe. Each variant caters to specific tolerances and performance requirements within the lightweight welded pipe category.
The manufacturing of Shallow Wall Straight Seam Welded Pipe involves forming steel strips or plates into a cylindrical shape and welding the seam longitudinally using high-frequency induction welding (HFIW) or submerged arc welding (SAW) processes. This method ensures a consistent, high-integrity weld with minimal heat-affected zones, preserving the base metal's properties. The pipe is then often cold-drawn or calibrated to achieve precise outer diameters and the characteristic shallow wall dimensions. Rigorous quality control, including non-destructive testing like eddy current or ultrasonic inspection, is standard to guarantee weld seam integrity and dimensional accuracy. Key advantages include consistent internal and external surface finish, excellent straightness, and uniform mechanical properties throughout its length.
Typical Specifications for Shallow Wall Straight Seam Welded Pipe
- Material Grades: ASTM A53 Grade B, ASTM A500 Grade B/C, ST37, ST52, S235JR, S355JR, or equivalent.
- Standard: ASTM A53, ASTM A500, ASTM A513, EN 10219, or customized to customer requirements.
- Welding Process: High-Frequency Welding (HFW) or Submerged Arc Welding (SAW).
- Surface Finish: Bare (mill finish), black, galvanized (hot-dip or electro-galvanized), painted, or lightly oiled.
- Ends: Plain ends, beveled ends, or threaded ends as specified.
| Outer Diameter (OD) | Wall Thickness (WT) | Length |
|---|---|---|
| 1/2 inch (21.3 mm) to 8 inches (219.1 mm) | 0.8 mm to 3.0 mm | Standard: 6 meters (20 ft), or Cut-to-Length |
| 10 mm to 165 mm | 0.9 mm to 2.5 mm | Standard: 5.8m, 6m, 12m, or customized |
Key Mechanical & Chemical Properties
| Property | Typical Value (Example for ASTM A500 Gr. B) | Test Standard |
|---|---|---|
| Tensile Strength | ≥ 400 MPa (58,000 psi) | ASTM A370 |
| Yield Strength | ≥ 250 MPa (36,000 psi) | ASTM A370 |
| Elongation | ≥ 18% | ASTM A370 |
| Carbon Content (Max) | ~0.26% | ASTM A751 |
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