API 5L Large Diameter Spiral Pipe
For demanding industrial and infrastructure projects requiring robust, high-capacity fluid conveyance, API 5L Large Diameter Spiral Pipe represents the pinnacle of engineered solutions. This product is manufactured to comply with the stringent specifications of the API 5L standard, ensuring superior performance for the transmission of oil, gas, and other hydrocarbons. Its spiral welded construction provides exceptional structural integrity and dimensional stability, making it an ideal choice for long-distance pipelines, piling applications, and large-scale water projects. For foundational support in construction, our ASTM A252 Spiral Piling Pipe offers unmatched strength. In water and wastewater systems, engineers consistently rely on the durability of AWWA C200 Spiral Welded Steel Pipe. Specialized applications, such as land reclamation and sediment transport, benefit from our Large Diameter Spiral Pipe for Dredging, while the energy sector utilizes our Spiral Welded Casing Pipe for Oil And Gas for well integrity and production.
The manufacturing excellence behind API 5L Large Diameter Spiral Pipe lies in its precise helical seam welding process. This method involves forming a continuous strip of high-grade steel into a cylindrical shape through a spiral roll formation, followed by automatic submerged-arc welding (SAW) both inside and outside. This results in a uniform weld seam that is often stronger than the base metal itself. The spiral configuration allows for the production of pipes with significantly larger diameters compared to longitudinal welded pipes, without compromising on wall thickness or overall strength. This makes API 5L Large Diameter Spiral Pipe exceptionally resistant to internal pressure, external loads, and environmental stresses, guaranteeing a long service life in even the most challenging terrains and operating conditions.
Key Specifications & Parameters
- Standard Compliance: API 5L PSL1 / PSL2 (Includes Grades B, X42 to X80)
- Diameter Range (OD): 20 inches (508 mm) to 100 inches (2540 mm) and above
- Wall Thickness: 6.0 mm to 25.4 mm (0.236" to 1.0")
- Length: Typically 6 meters to 12.2 meters (20 ft to 40 ft), or as per client requirement
- Welding Process: Double-sided Submerged Arc Welding (DSAW)
- End Finish: Beveled end, plain end, or with protective caps
- Coating: External (FBE, 3LPE, 3LPP) and Internal (FBE, Cement Lining) options available
| API 5L Grade | Yield Strength (Min) MPa | Tensile Strength (Min) MPa | Typical Application |
|---|---|---|---|
| B | 241 | 414 | Low-pressure water lines, general purpose |
| X42 | 290 | 415 | Onshore gathering lines |
| X52 | 359 | 455 | Medium-pressure oil & gas transmission |
| X65 | 448 | 535 | High-pressure mainline pipelines |
| X80 | 551 | 621 | Arctic & deepwater projects, high-strength requirements |
Our production facility integrates advanced ultrasonic testing (UT), radiographic inspection (RT), and hydrostatic pressure testing to verify the quality of every API 5L Large Diameter Spiral Pipe before dispatch. We also offer comprehensive certification packages including Mill Test Certificates (MTC), Material Test Reports (MTR), and compliance documentation per API 5L and other relevant international norms.
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