Line Pipe (for Oil and Gas Transportation)
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Carbon steel made seamless tube is mainly used in petroleum and natural gas industry for transportation of gas and fluid.
Dimension Tolerance| Standards | Outer Diameter Tolerance | Thickness Tolerance | |
| API SPEC5L | D ＜ 60.3 | 0.41mm-0.80mm | 15%S, 12.5%S |
| API SPEC5L | D≥60.3 | 0.75%D-0.75%D | |
| Standards | Steel Grade | Yield Strength (MPa) | Tensile Strength ( MPa) | Elongation (%) | Impact Energy (J) | ||||
| APISPEC5L | PSL 1 | ||||||||
| B | ≥241. | ≥414 | |||||||
| X42 | ≥290 | ≥414 | |||||||
| X46 | ≥317 | ≥434 | |||||||
| X52 | ≥359 | ≥455 | |||||||
| X56 | ≥386 | ≥490 | |||||||
| PSL 2 | |||||||||
| Min | Max | Min | Max | Min | |||||
| B | 241 | 448 | 441 | 758 | 41 (27) | ||||
| X42 | 290 | 496 | 414 | 758 | 41 (27) | ||||
| X46 | 317 | 524 | 434 | 758 | 41 (27) | ||||
| X52 | 359 | 531 | 455 | 758 | 41 (27) | ||||
| X56 | 386 | 544 | 490 | 758 | 41 (27) | ||||
| Standards | Steel Grade | C | Mn | P | S |
| Max | Max | Max | Max | ||
| API SPEC 5L | PSL 1 | ||||
| B | 0.28 | 1.2 | 0.03 | 0.03 | |
| X42 | 0.28 | 1.3 | 0.03 | 0.03 | |
| X46,X52,X56 | 0.28 | 1.4 | 0.03 | 0.03 | |
| PSL 2 | |||||
| B | 0.24 | 1.2 | 0.25 | 0.015 | |
| X42 | 0.24 | 1.3 | 0.25 | 0.015 | |
| X46,X52,X56 | 0.24 | 1.4 | 0.25 | 0.015 | |
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