Nominal Bore Pipe
• Other Schedules, Sizes & Grades Available
| NB Size | A O/Dia | (B) Schedule 5 Wall Thickness | (B) Schedule 10 Wall Thickness | (B) Schedule 40 Wall Thickness |
| 1/8" NB | 0.405" | - | 0.049" | 0.068" |
| 1/4" NB | 0.540" | - | 0.065" | 0.088" |
| 3/8" NB | 0.675" | - | 0.065" | 0.091" |
| 1/2" NB | 0.840" | 0.065" | 0.083" | 0.109" |
| 3/4" NB | 1.050" | 0.065" | 0.083" | 0.113" |
| 1" NB | 1.315" | 0.065" | 0.109" | 0.133" |
| 1-1/4" NB | 1.660" | 0.065" | 0.109" | 0.140" |
| 1-1/2" NB | 1.900" | 0.065" | 0.109" | 0.145" |
| 2" NB | 2.375" | 0.065" | 0.109" | 0.154" |
| 2-1/2" NB | 2.875" | 0.083" | 0.120" | 0.203" |
| 3" NB | 3.500" | 0.083" | 0.120" | 0.216" |
| 3-1/2" NB | 4.000" | 0.083" | 0.120" | 0.226" |
| 4" NB | 4.500" | 0.083" | 0.120" | 0.237" |