What grade is X42 pipe?
X42 steel pipe falls under the PSL1 and PSL2 grade pipeline steel in API 5L standard, with a minimum yield strength of 290 MPa and tensile strength ranging between 415-760 MPa. This steel is produced through micro-alloying design and controlled rolling and cooling processes, resulting in fine-grained microstructure and uniform mechanical properties. Notably, X42 steel pipe exhibits outstanding low-temperature toughness, maintaining good impact toughness at -20°C, making it highly suitable for use in cold regions. Additionally, the steel pipe undergoes stringent non-destructive testing, including ultrasonic testing and eddy current inspection, to ensure defect-free pipe body and meet the safety requirements for high-pressure transmission.
api 5l x42 pipe specification
| Supply Range | 1/2 to 48 inch |
| Product Specification Level |
PSL1 PSL2 Onshore and Offshore Sour Service |
| Ends Type |
Beveled Plain |
| Nominal Bore Size | 3/8 to 30 inch |
| Surface |
Natural Black painting Varnished 3PE FBE Cladding and Line |
| Yield Strength | 290 MPa Min |
| Protection Caps |
Plastic Iron |
| Tensile Strength | 415 MPa Min |
| Hardness | < 250 HB |
| Testing |
Flattening test Chemical composition Impact test Tensile test Expansion test Surface roughness measurement Non destructive weld test Visual test Dimensional test |
| Manufacturing Process | Seamless, LSAW, ERW, SSAW |
| Ends | BE, PE and TE |
| Dimensional Standard | ASME B36.10 |
| Manufacturing Types | Cold and Hot Rolled |
| Value Added Service |
Bead rolling Hot galvanization Welding position Custom packaging method Cut to length Epoxy Coating Custom marking End finishing |
What is the difference between API 5L Grade B and X42?
| Parameter | API 5L X42 | API 5L GR.B | Key Differences |
|---|---|---|---|
| Grade Definition | Specific grade (min yield strength) | Basic generic grade | GR.B is default for PSL1 without strength value |
| Yield Strength | ≥290 MPa | ≥241 MPa | Higher strength required for X42 |
| Tensile Strength | 415-565 MPa | ≥414 MPa (no upper limit) | GR.B specifies only minimum |
| PSL Class | Covers PSL1 & PSL2 | PSL1 only | X42 meets stricter PSL2 requirements |
| Carbon Equivalent | CEIIW ≤0.43% (typical) | Not mandatory | X42 requires strict control for weldability |
| Impact Toughness | ≥41J @ 0°C (PSL2) | Generally not required | PSL1 GR.B exempts low-temp impact tests |
| Standard Version | API 5L 46th+ edition | Compatible with legacy editions | GR.B common in older designs |
api 5l x42 pipe wall thickness
| NPS (in) |
Outside Diameter (in) |
SCH 10 | SCH 20 | SCH 30 | SCH STD | SCH 40 | SCH 60 | SCH XS | SCH 80 | SCH 100 | SCH 120 | SCH 140 | SCH 160 | SCH XXS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 0.405 | 0.068 | 0.068 | 0.095 | 0.095 | |||||||||
| 1/4 | 0.540 | 0.088 | 0.088 | 0.119 | 0.119 | |||||||||
| 3/8 | 0.675 | 0.091 | 0.091 | 0.126 | 0.126 | |||||||||
| 1/2 | 0.840 | 0.109 | 0.109 | 0.147 | 0.147 | 0.187 | 0.294 | |||||||
| 3/4 | 1.050 | 0.113 | 0.113 | 0.154 | 0.154 | 0.219 | 0.308 | |||||||
| 1 | 1.315 | 0.133 | 0.133 | 0.179 | 0.179 | 0.250 | 0.358 | |||||||
| 1 1/4 | 1.660 | 0.140 | 0.140 | 0.191 | 0.191 | 0.250 | 0.382 | |||||||
| 1 1/2 | 1.900 | 0.145 | 0.145 | 0.200 | 0.200 | 0.281 | 0.400 | |||||||
| 2 | 2.375 | 0.154 | 0.154 | 0.218 | 0.218 | 0.344 | 0.436 | |||||||
| 2 1/2 | 2.875 | 0.203 | 0.203 | 0.276 | 0.276 | 0.375 | 0.552 | |||||||
| 3 | 3.500 | 0.216 | 0.216 | 0.300 | 0.300 | 0.438 | 0.600 | |||||||
| 3 1/2 | 4.000 | 0.226 | 0.226 | 0.318 | 0.318 | |||||||||
| 4 | 4.500 | 0.237 | 0.237 | 0.337 | 0.337 | 0.438 | 0.531 | 0.674 | ||||||
| 5 | 5.563 | 0.258 | 0.258 | 0.375 | 0.375 | 0.500 | 0.625 | 0.750 | ||||||
| 6 | 6.625 | 0.280 | 0.280 | 0.432 | 0.432 | 0.562 | 0.719 | 0.864 | ||||||
| 8 | 8.625 | 0.250 | 0.277 | 0.322 | 0.322 | 0.406 | 0.500 | 0.500 | 0.594 | 0.719 | 0.812 | 0.906 | 0.875 | |
| 10 | 10.750 | 0.250 | 0.307 | 0.365 | 0.365 | 0.500 | 0.500 | 0.594 | 0.719 | 0.844 | 1.000 | 1.125 | 1.000 | |
| 12 | 12.750 | 0.250 | 0.330 | 0.375 | 0.406 | 0.562 | 0.500 | 0.688 | 0.844 | 1.000 | 1.125 | 1.312 | 1.000 | |
| 14 | 14.000 | 0.250 | 0.312 | 0.375 | 0.375 | 0.438 | 0.594 | 0.500 | 0.750 | 0.938 | 1.094 | 1.250 | 1.406 | |
| 16 | 16.000 | 0.250 | 0.312 | 0.375 | 0.375 | 0.500 | 0.656 | 0.500 | 0.844 | 1.031 | 1.219 | 1.438 | 1.594 | |
| 18 | 18.000 | 0.250 | 0.312 | 0.438 | 0.375 | 0.562 | 0.750 | 0.500 | 0.938 | 1.156 | 1.375 | 1.562 | 1.781 | |
| 20 | 20.000 | 0.250 | 0.375 | 0.500 | 0.375 | 0.594 | 0.812 | 0.500 | 1.031 | 1.281 | 1.500 | 1.750 | 1.969 | |
| 22 | 22.000 | 0.250 | 0.375 | 0.500 | 0.375 | 0.875 | 0.500 | 1.125 | 1.375 | 1.625 | 1.875 | 2.125 | ||
| 24 | 24.000 | 0.250 | 0.375 | 0.562 | 0.375 | 0.688 | 0.969 | 0.500 | 1.219 | 1.531 | 1.812 | 2.062 | 2.344 | |
| 30 | 30.000 | 0.312 | 0.500 | 0.625 | 0.375 | 0.500 | ||||||||
| 32 | 32.000 | 0.312 | 0.500 | 0.625 | 0.375 | 0.688 | ||||||||
| 34 | 34.000 | 0.312 | 0.500 | 0.625 | 0.375 | 0.688 | ||||||||
| 36 | 36.000 | 0.312 | 0.500 | 0.625 | 0.375 | 0.750 | ||||||||
| 42 | 42.000 | 0.500 | 0.625 | 0.375 | 0.750 |
What is api 5l x42 equivalent
The API 5L X42 corresponds to the L290 grade, and this material's line pipe has a minimum yield strength of 290 MPa.
API 5L X42 Line PIpe Factory
