API 5L X70 (L485) PSL2 line pipe shows higher performance than X70 PSL1 steel pipe as it has stricter inspection requirements, chemical composition and mechanical performance requirements. API 5L PSL2 X70M line pipe is designed for conveying gas, water, and oil in the natural gas and oil industries. It is delivered in thermomechanical rolled, or thermomechanical formed state.
The required minimum yield strength for API 5L PSL2 X70M (L485) line pipe is 70,300 psi or 485 MPa while the minimum tensile strength is around 82,700 psi or 570 MPa.
API 5L PSL2 X70M line pipe specification
| Standard |
Specification for Line Pipe(ANSI/API specification 5L - 44th Edition, October 1, 2007) |
| Line pipe sizes |
Nominal Pipe Size 1/2" to 48 " O.D. |
| Wall thickness |
SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XS, SCH XXS, All API 5L X70M Pipe Thickness available |
| Pipe ends |
Plain, Bevel, Screwed, Threaded l245 pipe |
| Manufacturing types |
ERW / Welded / Fabricated / CDW |
| Application & uses |
Conveying gas, water, oil, and other liquids |
The technical data of API 5L PSL2 X70M line pipeIt is given based on API Spec 5L-2007 version. X70 PSL2 steel pipe is more stringent requirement as compare to X70 PSL1 , in X70 PSL2 charpy test is mandatory, tensile strength and chemical composition is more as compare to PSL1.
Chemical composition(%) of API 5L PSL2 X70M steel pipe
| C max. |
Si max. |
Mn max. |
P max. |
S max. |
V max. |
Nb max. |
Ti max. |
Other |
| 0.12 |
0.45 |
1.70 |
0.025 |
0.015 |
g |
g |
g |
h |
g, Unless otherwise agreed, Nb+V+Ti≤0.15
h, Unless otherwise agreed, Cu≤0.50, Ni≤0.30; Cr≤0.30; and Mo≤0.15;
Mechanical properties of of API 5L PSL2 X70M steel pipe
| Pipe grade |
Yield Strength, Rt0.5 (MPa) |
Tensile Strength, Rm(MPa) |
Ratio Rt0.5/Rm max. |
| L485M or X70M |
485 to 635 |
570 to 760 |
0.93 |
API 5L PSL2 X70M steel pipe acceptable delivery condition API 5L PSL2 X70M line pipes are delivered in thermomechanical rolled, or thermomechanical formed state.
Available pipe tests for API 5L PSL2 X70M line pipeChemical composition analysis(product analysis)
Tensile tests
Hydro-static test
Bend test
Flattening test
CVN impact test for PSL2 line pipe
MT magnetic particle testing
NDT non-destructive testing
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