API 5L X60 Line Pipe
API 5L X60 pipe is a high-strength line pipe widely used in long-distance transportation systems for oil and gas, compliant with the API 5L standard established by the American Petroleum Institute. The "X" in its name stands for line pipe steel, while the number "60" indicates a minimum yield strength of 60 kpsi (approximately 415 MPa), making it one of the mainstream steel grades in onshore and offshore oil and gas projects.
【 API 5L X60 Pipeline Manufacturer Direct Supply 】 Compliant with the 2024 API standard, corrosion-resistant and cold resistant, suitable for all scenarios! Click to get free material testing report+accurate quotation
API 5L X60 Pipe Specification
| Item | Parameter |
|---|---|
| Standard | API SPEC 5L, GB/T 9711 |
| Steel Grade | X60 (L415) |
| Quality Level | PSL1 / PSL2 (PSL2 has stricter requirements) |
| Pipe Type | Seamless or Welded |
| Outer Diameter Range | 21.3 mm – 1067 mm (1/2" – 42") |
| Wall Thickness Range | 2 mm – 150 mm |
| Connection Methods | Butt welding, coupling connection, spigot connection, etc. |
| Applicable Environments | Onshore oil and gas fields, submarine pipelines, high-pressure transmission systems |
Chemical Properties of API 5L X60 (Typical Values, PSL2 Requirements Are Stricter)
| Element | Content Range (%) | Function |
|---|---|---|
| Carbon (C) | ≤ 0.16 | Controls strength, avoids reduced toughness |
| Manganese (Mn) | 1.40 – 1.65 | Enhances strength, toughness, and weldability |
| Phosphorus (P) | ≤ 0.020 | Harmful element; strictly controlled to prevent corrosion degradation |
| Sulfur (S) | ≤ 0.003 – 0.015 | Low sulfur improves resistance to acid and stress corrosion |
| Silicon (Si) | 0.15 – 0.45 | Deoxidizer, improves purity |
| Nb+V+Ti | ≤ 0.15 | Refines grain structure, enhances sour resistance and weld performance |
| Carbon Equivalent (Ceq) | ≤ 0.45% (PSL2) | Controls welding crack risk |
Mechanical Strength of API 5L X60
| Performance Indicator | Requirement (PSL2) |
|---|---|
| Minimum Yield Strength | 415 MPa (60 kpsi) |
| Tensile Strength | ≥ 520 MPa |
| Yield-to-Tensile Ratio (Y/T) | ≤ 0.85 (PSL2) |
| Elongation | ≥ 18% |
| 0℃ Charpy Impact Energy | ≥ 40 J (PSL1 does not require test; PSL2 requires -20℃ impact test) |
| Heat Treatment Condition | Normalized or TMCP (Thermo-Mechanical Controlled Process) |
Dimensions and Sizes of API 5L X60 Line Pipe
| NPS (inches) | Outer Diameter (mm) | Common Wall Thickness (mm) | Applicable Standard |
|---|---|---|---|
| 1/2" | 21.3 | 2.0 – 3.0 | API 5L |
| 2" | 60.3 | 3.9 – 5.5 | API 5L |
| 6" | 168.3 | 7.1 – 12.7 | API 5L |
| 12" | 323.9 | 9.5 – 18.3 | API 5L |
| 24" | 609.6 | 12.7 – 25.4 | API 5L |
| 42" | 1067 | 15.0 – 50.0 | API 5L |
API 5L X60 Equivalent Grades
| Standard | Equivalent Grade | Notes |
|---|---|---|
| GB/T 9711 (China) | L415 | X60 ≈ L415, number indicates min yield strength in MPa |
| DIN 2394 (Germany) | P235GH | Approximate match, not fully equivalent; verify per application |
| ASTM A53 | Gr.B | Only for low-pressure use, lower strength than X60 |
| JIS G3441 (Japan) | STK500 | Similar strength level in Japanese standards |
API 5L X60 Pipe Applications
Long-distance oil and gas pipelines: Suitable for high-pressure, large-diameter trunk lines.
Offshore platforms and submarine pipelines: High corrosion resistance and pressure tolerance for complex marine conditions.
Urban gas distribution networks: Safe and reliable for medium-to-low pressure delivery.
Sour gas fields (H₂S-containing): Resists sulfide stress cracking when paired with low-sulfur materials and anti-corrosion coatings.
Pipelines in cold regions: Excellent low-temperature toughness prevents brittle fracture.
Testing of API 5L X60 Pipe
| Test Item | Method | Description |
|---|---|---|
| Hydrostatic Test | Hydraulic Test | 1.5× working pressure, hold for 30 minutes without leakage |
| Ultrasonic Testing (UT) | Ultrasonic | 100% inspection of body and weld defects (mandatory for PSL2) |
| Radiographic Testing (RT) | Radiographic | Detects porosity, slag inclusions in welds (mandatory for PSL2) |
| Tensile Test | Tensile Testing | Measures yield strength, tensile strength, elongation |
| Charpy Impact Test | Impact Testing | Average ≥80J at -20℃ (PSL2 requirement) |
| Hardness Test | Vickers / Rockwell | Checks surface and core hardness distribution |
| Chemical Analysis | OES / ICP | Verifies molten composition meets standard |
API 5L X60 Pipe factory
API Pipeline packaging and shipping
FAQ
What is the strength of X60 steel?
The minimum yield strength of API 5L X60 steel is 415 MPa (approximately 60 kpsi), and the tensile strength is ≥ 520 MPa. It is a high-strength pipeline steel widely used in high-pressure transmission pipeline systems such as oil and natural gas.
What is the difference between API 5L X60 and X65?
API 5L X65 has higher strength and more stringent performance requirements than X60, both of which are high-strength pipeline steels, but X65 is suitable for higher pressure and more complex service environments.
Hot Tags: api 5l x60 line pipe, China api 5l x60 line pipe manufacturers, suppliers, 316 Stainless Steel Welded Pipe
Previous
API 5L X60 PSL2 LINE PIPESYou Might Also Like
Send Inquiry