API 5L PSL2 X56MO carbon steel line pipe is designed for conveying gas, water, and oil in the natural gas and oil industries, especially for off-shore piping projects. API 5L Grade X56 carbon steel pipe has a yield strength which can be measured in PSI, which in this case could be valued at 56,600psi. Although X56 is used to indicate the strength of these pipes, they could also be referred to as L390 Pipe, with the L390 identified as the pipes tensile strength in MPa. Deemed to be a fitting choice for transportation of oil, gas and water, the API 5L X56 PSL2 pipe is a strict specification pipe used by industries such as hydrocarbon, oil and natural gas industry.
API 5L X56MO PSL2 Pipe shows higher performance than PSL1 as it has stricter inspection requirements, chemical composition and mechanical performance requirements.
API 5L PSL2 X56MO line pipe size
| 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 X56MO 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 X56MO line pipeIt is given based on API Spec 5L-2007 version. X56 PSL2 steel pipe is more stringent requirement as compare to X56 PSL1, in X56 PSL2 charpy test is mandatory, tensile strength and chemical composition is more as compare to PSL1.
Chemical composition(%) of API 5L PSL2 X56MO steel pipe
| C max. |
Si max. |
Mn max. |
P max. |
S max. |
V max. |
Nb max. |
Ti max. |
Other |
| 0.12 |
0.45 |
1.65 |
0.020 |
0.010 |
0.06 |
0.08 |
0.04 |
e,h |
e, Nb+V+Ti≤0.15
h, Cu≤0.50, Ni≤0.50; Cr≤0.50; Mo≤0.50; B≤0.0005.
Mechanical properties of of API 5L PSL2 X56MO steel pipe
| Pipe grade |
Yield Strength, Rt0.5 (MPa) |
Tensile Strength, Rm(MPa) |
Ratio Rt0.5/Rm max. |
| L390MO or X56MO |
390 to 545 |
490 to 760 |
0.93 |
API 5L PSL2 X56MO steel pipe acceptable delivery condition API 5L PSL2 X56MO line pipes are delivered in thermomechanical rolled, or thermomechanical formed(M) condition.
Available pipe tests for API 5L PSL2 X56MO 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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