API 5L - Line Pipe Dimensions
Oil & Gas Transmission - Wall Thickness (mm)
Column Legend
NPS = Nominal Pipe Size (inch) OD = Outside Diameter (mm) B, X42-X70 = API 5L Grade (min. yield strength)
All values are minimum wall thickness in mm per API 5L for oil & gas transmission lines
| NPS | OD (mm) | B | X42 | X52 | X60 | X65 | X70 |
|---|---|---|---|---|---|---|---|
| 2 | 60.3 | 3.91 | 3.91 | 4.78 | 5.54 | 5.54 | 6.35 |
| 3 | 88.9 | 5.49 | 5.49 | 5.49 | 6.35 | 7.01 | 7.62 |
| 4 | 114.3 | 6.02 | 6.02 | 6.02 | 7.11 | 7.92 | 8.56 |
| 6 | 168.3 | 7.11 | 7.11 | 7.92 | 8.74 | 9.53 | 10.31 |
| 8 | 219.1 | 8.18 | 8.18 | 8.74 | 10.31 | 11.13 | 12.7 |
| 10 | 273 | 9.27 | 9.27 | 9.53 | 11.13 | 12.7 | 14.27 |
| 12 | 323.8 | 9.53 | 9.53 | 10.31 | 12.7 | 14.27 | 15.88 |
| 14 | 355.6 | 9.53 | 9.53 | 11.13 | 12.7 | 14.27 | 15.88 |
| 16 | 406.4 | 9.53 | 9.53 | 11.13 | 12.7 | 15.88 | 17.48 |
| 18 | 457.2 | 9.53 | 9.53 | 12.7 | 14.27 | 15.88 | 17.48 |
| 20 | 508 | 9.53 | 9.53 | 12.7 | 14.27 | 17.48 | 19.05 |
| 24 | 609.6 | 9.53 | 9.53 | 12.7 | 15.88 | 17.48 | 19.05 |
| 30 | 762 | 9.53 | 12.7 | 14.27 | 17.48 | 19.05 | 20.62 |
| 36 | 914.4 | 9.53 | 12.7 | 15.88 | 17.48 | 19.05 | 22.23 |
| 42 | 1066.8 | 9.53 | 12.7 | 15.88 | 19.05 | 20.62 | 22.23 |
| 48 | 1219.2 | 9.53 | 12.7 | 15.88 | 19.05 | 22.23 | 25.4 |