API 5L X60 PSL2 LINE PIPES
API 5L X60 PSL2 LINE PIPES are high-strength line pipe steels conforming to the 46th edition of the American Petroleum Institute (API) SPEC 5L standard, falling under Product Specification Level 2 (PSL2). Designed for harsh service conditions such as high pressure, low temperature, and sour (H₂S-containing) environments, these pipes are widely used in onshore and offshore oil and gas transmission systems.
【 API 5L X60 PSL2 Pipeline Pipe 】 High pressure and corrosion-resistant, preferred for oil and gas transportation! Click to get exclusive quotation and customize your engineering solution!
Specification of API 5L X60 PSL2 Pipe
| Item | Parameter |
|---|---|
| Standard | API SPEC 5L (46th Edition) |
| Grade | X60 (L415) |
| Product Specification Level | PSL2 |
| Minimum Yield Strength | 415 MPa (60 kpsi) |
| Minimum Tensile Strength | ≥ 520 MPa |
| Yield-to-Tensile Ratio (Y/T) | ≤ 0.93 |
| Impact Toughness Requirement | Charpy V-notch test at -20°C: average ≥ 80 J, individual ≥ 60 J |
| Non-Destructive Testing | Full-body ultrasonic testing (UT) + weld seam radiographic testing (RT) |
| Applicable Media | Oil, natural gas, water, H₂S-containing acidic media |
| Connection Methods | Butt welding, coupling connection, spigot-and-socket joint |
API 5L X60 PSL2 Chemical Composition Table
| Element | Maximum Content (%) | Notes |
|---|---|---|
| C (Carbon) | ≤ 0.12 | Controls carbon equivalent to improve weldability |
| Si (Silicon) | ≤ 0.45 | -- |
| Mn (Manganese) | ≤ 1.40 | -- |
| P (Phosphorus) | ≤ 0.025 | Harmful element; strictly limited |
| S (Sulfur) | ≤ 0.015 | -- |
| Cu (Copper) | ≤ 0.50 | -- |
| Ni (Nickel) | ≤ 0.50 | -- |
| Cr (Chromium) | ≤ 0.50 | -- |
| Mo (Molybdenum) | ≤ 0.15 | -- |
| Nb + V + Ti | ≤ 0.15 | Microalloying elements for grain refinement and improved toughness |
| CEq (Carbon Equivalent) | ≤ 0.43 | Calculated value to ensure welding performance |
| CEp (Crack Susceptibility Index) | ≤ 0.25 | Specific requirement for PSL2 |
API 5L X60 PSL2 Mechanical Properties Table
| Property | Requirement |
|---|---|
| Minimum Yield Strength (Rt₀.₅) | 415 MPa |
| Maximum Yield Strength | No explicit upper limit, but Y/T ratio ≤ 0.93 |
| Minimum Tensile Strength (Rm) | ≥ 520 MPa |
| Yield-to-Tensile Ratio (Rt₀.₅/Rm) | ≤ 0.93 |
| Elongation (A₅₀mm) | ≥ 18% |
| Charpy Impact Energy (-20°C) | Average ≥ 80 J, individual ≥ 60 J |
| Hardness Test (for sour service) | ≤ 22 HRC (per API 5L Appendix H) |
API 5L X60 PSL2 Pipe Wall Thickness Table
| Outside Diameter (mm) | Wall Thickness (mm) | Typical Applications |
|---|---|---|
| 114.3 | 6.0 - 12.7 | Gas distribution lines, branch lines |
| 219.1 | 8.0 - 18.3 | Mainlines, medium-pressure transmission |
| 323.9 | 9.5 - 22.2 | High-pressure long-distance pipelines, offshore platforms |
| 457.2 | 10.0 - 25.4 | Large-diameter trunk networks |
| 610.0 | 12.7 - 30.0 | Ultra-high-pressure, deep-sea pipelines |
API 5L X60 PSL2 Pipe Weight Table
| Outside Diameter (mm) | Wall Thickness (mm) | Unit Weight (kg/m) |
|---|---|---|
| 114.3 | 6.0 | ~15.9 |
| 219.1 | 8.0 | ~42.5 |
| 323.9 | 12.7 | ~98.2 |
| 457.2 | 15.9 | ~174.6 |
| 610.0 | 19.1 | ~282.3 |
API 5L X60 PSL2 Pipe Pressure Rating Table
| Outside Diameter (mm) | Wall Thickness (mm) | Design Pressure (MPa) | Reference Standard |
|---|---|---|---|
| 114.3 | 6.0 | ~10.2 | ASME B31.8 |
| 219.1 | 8.0 | ~8.5 | -- |
| 323.9 | 12.7 | ~9.8 | -- |
| 457.2 | 15.9 | ~8.2 | -- |
| 610.0 | 19.1 | ~7.6 | -- |
API 5L Grade X60 Line Pipe Coating
To enhance corrosion resistance, API 5L X60 PSL2 line pipes are commonly coated with the following protective systems:
FBE (Fusion-Bonded Epoxy): Single or dual-layer; suitable for general corrosive environments.
3LPE / 3LPP (Three-Layer Polyethylene/Polypropylene): Offers excellent mechanical protection and anti-corrosion performance; ideal for buried and marine pipelines.
Coal Tar Enamel: Traditional coating with strong water resistance but poor environmental compatibility.
Liquid Epoxy Coating: Used for field joint repair or specific operating conditions.
Anti-Corrosion Clad Pipe (Plastic/Rubber Lined): For transporting highly corrosive media.
Delivery Condition of X60 PSL2 Pipe
Delivery Condition: Hot-rolled or normalized; some high-toughness variants use thermo-mechanically controlled process (TMCP).
End Preparation: Plain end (BE), threaded end (TE), or socket end (SE).
Packaging: Bundled with protective caps, coated with anti-rust oil.
Marking Requirements: Each pipe spray-painted with standard, grade, heat/batch number, dimensions, manufacturer name, and API monogram.
Quality Documentation: EN 10204 3.1 or 3.2 certificate provided, including chemical analysis, mechanical testing, NDT results, and heat treatment records.
Traceability: Full traceability from steel plate to finished pipe ensured, meeting PSL2's stringent quality control requirements.
FAQ
What does PSL2 mean on pipe
PSL2 (Product Specification Level 2) is a higher-level quality requirement for pipeline pipes in the API 5L standard. Compared to PSL1, PSL2 is more stringent in terms of chemical composition, mechanical properties, non-destructive testing, and quality control, and is suitable for harsh service environments such as high pressure, low temperature, and sulfur-containing.
What does PSL stand for in API 5L
PSL stands for Product Specification Level, which is a key indicator used in the API 5L standard to distinguish the quality and technical requirements levels of pipeline pipes.
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