API 5L X65 is a high-strength, low-alloy steel grade used for manufacturing pipelines in the oil and gas industry. It offers excellent mechanical properties and durability, making it suitable for demanding applications in pipeline transportation systems
API 5L X65 steel has a carefully controlled chemical composition to achieve its desired properties. For PSL2, the maximum carbon content is 0.18%, with manganese content up to 1.70%.
The minimum yield strength is 450 MPa (65,300 psi), and the minimum tensile strength is 535 MPa (77,600 psi).
| Property | PSL1 | PSL2 |
|---|---|---|
| Yield Strength (min) | 450 MPa (65,300 psi) | 450-600 MPa |
| Tensile Strength (min) | 535 MPa (77,600 psi) | 535-760 MPa |
| Elongation (min) | 18% | 18% |
| Carbon Content (max) | 0.26% | 0.18% |
| Manganese Content (max) | 1.45% | 1.70% |
| Phosphorus Content (max) | 0.03% | 0.025% |
| Sulfur Content (max) | 0.03% | 0.015% |
API 5L X65 pipes can be manufactured using various processes:
Key advantages include high strength-to-weight ratio, excellent toughness, and good weldability.
Rigorous quality control measures are implemented during the manufacturing of API 5L X65 pipes, including:
PSL2 has stricter requirements for chemical composition, mechanical properties, and testing compared to PSL1. PSL2 is typically used for more critical applications.
API 5L X65 has higher yield and tensile strengths compared to X60, but lower than X70. It offers a good balance of strength and weldability.
Main applications include oil and gas transmission pipelines, offshore structures, and high-pressure fluid transportation systems.
API 5L X65 pipes can be manufactured using seamless (hot rolling or cold drawing) or welded (ERW, LSAW, SSAW) processes.
Key advantages include high strength-to-weight ratio, excellent toughness, good weldability, and suitability for high-pressure applications.
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Building 114, Jiangsu Street, Wuzhou International Industrial Expo City, Xinwu District, Wuxi City
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