X70 PSL2 line steel is a high-strength line steel specified in the American Petroleum Institute (API) 5L standard. The "X" in its designation represents line steel, and "70" indicates a minimum yield strength of 70 ksi (approximately 483 MPa). This steel is a microalloyed, controlled-rolling, controlled-cooling steel, achieving an excellent combination of strength and toughness through precise composition design and TMCP (Transformer Transformer Processing).
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API 5L X70 PSL2 pipeline for oil and gas Product Dimensions & Size Specifications
| Outside Diameter (OD) | Wall Thickness (WT) | Length | Production Type |
| 6" – 24" | SCH 20 – SCH XXS | 6m, 12m, DRL | Seamless (SMLS) |
| 20" – 60" | 6.4mm – 60mm | 12m, 18m | LSAW (Longitudinal) |
| 8" – 24" | 6.0mm – 25mm | Up to 12m | ERW (High Frequency) |
| 24" – 100" | 8.0mm – 30mm | Up to 18m | SSAW (Spiral) |
Mechanical Properties & Chemical Composition (Typical):
| Grade | Yield Strength (min) | Tensile Strength (min) | Carbon Equivalent (CEq) | Impact Test (CVN) |
| X70 PSL2 | 485 MPa (70,300 psi) | 570 MPa (82,700 psi) | ≤ 0.43 | Required (0°C to -20°C) |
| L485 | 70.3 ksi | 82.7 ksi | Low Carbon for Welding | Mandatory Toughness |
Advanced Surface Treatment of API 5L 70 PSL2 High Yield Line Pipes
3PE (Three-Layer Polyethylene): The industry standard for buried pipelines, offering excellent resistance to cathodic disbondment and mechanical damage.
FBE (Fusion Bonded Epoxy): Superior adhesion for high-temperature service.
Internal Lining (Liquid Epoxy): Reduces internal friction, increasing flow efficiency and reducing pumping costs.
Built for 50-Year Service Life! Our 3PE coating process complies with DIN 30670 and ISO 21809-1 standards. Ensure your project remains maintenance-free in the most corrosive soils. [Download Coating Data Sheet]
Inspection Services of API 5L X70 PSL2 Pipe for high pressure gas transportation
Non-Destructive Testing (NDT): Including 100% Ultrasonic (UT), Radiographic (RT), and Magnetic Particle Inspection (MPI).
Mechanical Lab Testing: Yield, Tensile, Elongation, Flattening, and Bend tests.
Third-Party Inspection (TPI): We provide full cooperation for inspections by SGS, Bureau Veritas (BV), ABS, or Intertek at our facility.
Defeat Sour Service Challenges: Our customized X70 PSL2 pipes pass HIC & SSCC testing, making them the premier choice for high-H2S hydrocarbon extraction projects.
Packaging & Logistics Of API 5L X70 PSL2 Oil and gas pipe lines
Packing: Bundled for small diameters; loose with end protectors (plastic or metal caps) for large diameters.
Protection: Application of heavy-duty rust-preventative oil for long-voyage sea freight.
Shipping Modes:
Containers (20ft/40ft): Ideal for standard lengths and diameters.
Breakbulk: Best for large project orders and oversized LSAW pipes.
Major Destination Ports: Frequent shipments to Santos (Brazil), Buenos Aires (Argentina), San Antonio (Chile), and Cartagena (Colombia).
FAQ
What is X70 material equivalent to?
X70 is a high-strength pipeline steel widely used in the oil and gas industry. It meets the API 5L standard. The "X" signifies its use for pipelines, while "70" refers to its yield strength of 70,000 psi. Equivalent grades include L485M (China) and L485MB (Europe).
What is the difference between API 5L X65 and X70?
API 5L X65: Widely used in onshore and offshore pipelines where moderate strength and good weldability are required. API 5L X70: Preferred for high-pressure pipelines and projects requiring higher strength-to-weight ratios, such as deepwater offshore pipelines.
What is the wall thickness of API 5L X70 pipe?
Nominal HIC Tested X70 Pipe Size 1/2" to 48 " O.D. API 5L X70 Pipe Wall Thickness - Schedule 10 through 160, STD, XS, XXS. API 5L X70 PSL1 Pipe End Finishes: Beveled, Square Cut, Threaded & Coupled. API 5L X70 Grade B pipelines for combustible fluids.
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