API 5L Carbon Seamless Steel Pipe
Features
- Seamless construction without a longitudinal weld seam
- Multiple steel grades to meet different pipeline strength requirements
- PSL 1 and PSL 2 options for specified project requirements
- Range of outside diameters and wall thicknesses for different pipeline designs
- Plain or bevelled ends to match specified joining procedures
- Hydrostatic testing and applicable inspections according to API 5L requirements
- Protective surface finishes and coatings available for specified service conditions
Specifications
| Parameter | Specification |
|---|---|
| Standard | API Specification 5L, Line Pipe |
| Grades | Grade B, X42, X52, X60, X65, subject to manufacturing capability and order requirements |
| Product Specification Level | PSL 1 or PSL 2, as specified in the order |
| Manufacturing Process | Seamless steel pipe manufacturing by hot forming or other permitted processes in accordance with API 5L |
| Outside Diameter | Selected sizes from approximately 21.3 mm upward, subject to the applicable dimensional standard and manufacturing range |
| Wall Thickness | Specified by nominal wall thickness, outside diameter, and applicable dimensional requirements |
| Length | Specified or random lengths according to the applicable API 5L requirements and purchase order |
| Ends | Plain ends or bevelled ends, as specified |
| Surface Finish | As manufactured, black, or with an agreed protective coating compatible with the project requirements |
| Testing | Hydrostatic testing and applicable inspection or nondestructive testing according to the specified API 5L requirements |
| Typical Use | Oil and gas transmission, water transportation, and industrial pipeline systems |
Chemical Composition and Mechanical Properties
| Element | Maximum Content (%) |
|---|---|
| Carbon (C) | 0.28 |
| Manganese (Mn) | 1.20 |
| Phosphorus (P) | 0.030 |
| Sulfur (S) | 0.030 |
| Copper (Cu) | 0.50 |
| Nickel (Ni) | 0.50 |
| Chromium (Cr) | 0.50 |
| Molybdenum (Mo) | 0.15 |
| Vanadium (V) | Subject to applicable alloying limits |
| Niobium (Nb) | Subject to applicable alloying limits |
| Titanium (Ti) | Subject to applicable alloying limits |
| Property | Requirement |
|---|---|
| Specified Minimum Yield Strength | 245 MPa (35,500 psi) |
| Specified Minimum Tensile Strength | 415 MPa (60,200 psi) |
| Tensile Strength Upper Limit | Verify the applicable edition and product requirements before specifying |
| Elongation | Calculated according to the applicable API 5L specimen and test requirements |
Size Chart
| Nominal Pipe Size (NPS) | Nominal Diameter (DN) | Outside Diameter (mm) | Schedule 40 Wall Thickness (mm) |
|---|---|---|---|
| 1/2 | 15 | 21.3 | 2.77 |
| 1 | 25 | 33.4 | 3.38 |
| 2 | 50 | 60.3 | 3.91 |
| 3 | 80 | 88.9 | 5.49 |
| 4 | 100 | 114.3 | 6.02 |
| 6 | 150 | 168.3 | 7.11 |
| 8 | 200 | 219.1 | 8.18 |
| 10 | 250 | 273.1 | 9.27 |
| 12 | 300 | 323.9 | 10.31 |
Use Case
- Oil and natural gas transmission pipelines.
- Gathering lines connecting production wells and processing facilities.
- Industrial fluid transportation systems.
- Water transmission and distribution infrastructure.
- Refinery and petrochemical plant piping, subject to design conditions and material suitability.
- Energy and process facilities requiring line pipe manufactured to API 5L.