API 5L PSL1 X70 steel pipe is carbon steel line pipe for petroleum and natural gas industries’ pipeline transportation systems. API 5L X70 line pipe (Seamless and welded pipe) of all grades have PSL1 and PSL2 two product specifications. The required minimum yield strength for API 5L PSL1 X70 (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 PSL1 X70 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 X70 Pipe Thickness available |
| Pipe ends |
Plain, Bevel, Screwed, Threaded l245 pipe |
| Manufacturing types |
Seamless / ERW / Welded / Fabricated / CDW |
| Application & uses |
Conveying gas, water, oil, and other liquids |
The technical data of API 5L PSL1 X70 line pipeIt is given based on API Spec 5L-2007 version. Below are the chemical composition and mechanical properties of seamless type API 5L PSL1 line pipe.
Chemical composition(a, %) of API 5L PSL1 X70 seamless pipe
| C max. |
Mn max. |
P max. |
S max. |
V max. |
Nb max. |
Ti max. |
| 0.28 |
1.40 |
0.030 |
0.030 |
f |
f |
f |
a, Cu≤0.50; Ni≤0.50; Cr≤0.50; and Mo≤0.15;
f, Unless otherwise agreed, Nb+V+Ti≤0.15.
Mechanical properties of of API 5L PSL1 X70 seamless pipe
| Pipe grade |
Yield Strength, Rt0.5 Min (MPa) |
Tensile Strength, Rm Min (MPa) |
| L485 or X70 |
485 |
570 |
API 5L PSL1 X70 seamless pipe acceptable delivery condition API 5L PSL1 line pipes can be delivered in as-rolled, normalizing rolled, thermomechanical rolled, thermomechanical formed, normalizing formed, normalized, normalized and tempered, or quenched and tempered.
Available pipe tests for API 5L PSL1 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
API 5L PSL1 X70 line pipe is a hot selling steel pipe product. It is used for the transportation of gas, water and oil. Pipeline steel coated line pipes are resistant to crack propagation.
