API 5L X60 & X65 Line Pipes
API 5L X60 and API 5L X65 are high-strength carbon steel pipe grades used for the transmission of oil, gas, and water across long distances in onshore and offshore pipeline systems. These line pipes meet the requirements of the American Petroleum Institute (API) Specification 5L and are widely used in the oil & gas, petrochemical, and infrastructure sectors. The “X” designation denotes minimum yield strength in 1000s of psi—X60 (60,000 psi) and X65 (65,000 psi).
Key Features
- High Yield Strength: Suitable for high-pressure and critical-service environments.
- Excellent Weldability: Seamless and welded options offer easy fabrication.
- Corrosion Protection: Compatible with external coatings such as FBE, 3LPE, and galvanizing.
- Dimensional Flexibility: Available in various diameters and wall thicknesses.
- Versatility: Used in sweet and sour service conditions depending on PSL2 compliance.
Chemical Composition
Grade | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) |
X60 | 0.28 | 1.40 | 0.030 | 0.030 |
X65 | 0.28 | 1.40 | 0.030 | 0.030 |
Mechanical Properties
Property | X60 | X65 |
Yield Strength (min) | 415 MPa (60,200 psi) | 450 MPa (65,300 psi) |
Tensile Strength | 520–760 MPa | 535–760 MPa |
Elongation | ≥ 21% | ≥ 19% |
Applications
- Oil & Gas Transmission Pipelines: Used for transporting crude oil and natural gas over long distances under high pressure.
- Petrochemical and Refinery Piping: Employed in process piping and fluid transfer systems exposed to aggressive chemicals and high temperatures.
- Offshore Risers and Subsea Pipelines: Ideal for deepwater applications requiring high strength and corrosion resistance.
- Water and Slurry Pipelines: Used in mining and industrial sectors for transporting abrasive and high-density fluids.
- Foundation Piling and Structural Supports: Provides strong load-bearing capacity in bridge, marine, and civil engineering projects.
Forms Available
- Seamless Pipe: For high-pressure and critical applications.
- ERW Pipe: Economical and suitable for moderate-pressure systems.
- LSAW Pipe: For large-diameter pipelines in structural and fluid transport.
- HSAW Pipe: Used in bulk transmission projects.
PSL1 vs PSL2 Comparison
Feature | PSL1 | PSL2 |
Mechanical Testing | Optional | Mandatory |
Chemical Control | Standard | Stricter Limits |
NDT for Welds | Optional | Mandatory |
Traceability | Not Required | Required |
SSC Resistance | Not Guaranteed | Must comply with NACE (for sour service) |
Surface Finish and Coatings
- Pipes are available bare, black-painted, varnished, or externally coated.
- Compatible coatings: FBE, 3LPE, 3LPP, Coal Tar Enamel, Zinc.
Quality Assurance & Packaging
- Certifications: API 5L, ISO 3183, ISO 9001, and NACE MR0175 (for PSL2).
- Third-Party Inspection: Optional from SGS, BV, DNV, TUV.
- Packaging: End caps, steel bundles, plastic-wrapped or crated for exports.
Contact Riyaarth Overseas for API 5L X60 & X65 pipes manufactured to the highest global standards—engineered for durability, inspected for quality, and delivered on time.
FAQ's
Products
Industry We Serve
- Oil & Gas industries
- Chemical process industries
- Pump and valve in high pressure component
- Food industries
- Pulp and paper industry
- Aerospace industry
- Power plant
- Mechanical component
- Sugar industry
- Cement industry