| PN 6 | PN 8 | PN 10 | PN 16 | |
|---|---|---|---|---|
| Diâmetro Exterior Nominal (mm) | emin (mm) | emin (mm) | emin (mm) | emin (mm) |
| 63 | 2.0 | 2.5 | 3.0 | 4.7 |
| 75 | 2.3 | 2.9 | 3.6 | 5.6 |
| 90 | 2.8 | 3.5 | 4.3 | 6.7 |
| 110 | 2.7 | 3.4 | 4.2 | 6.6 |
| 125 | 3.1 | 3.9 | 4.8 | 7.4 |
| 140 | 3.5 | 4.3 | 5.4 | 8.3 |
| 160 | 4.0 | 4.9 | 6.2 | 9.5 |
| 180 | 4.4 | 5.5 | 6.9 | 10.7 |
| 200 | 4.9 | 6.2 | 7.7 | 11.9 |
| 208 | 5.1 | 6.5 | 8.0 | 12.5 |
| 225 | 5.5 | 6.9 | 8.6 | 13.4 |
| 250 | 6.2 | 7.7 | 9.6 | 14.8 |
| 280 | 6.9 | 8.6 | 10.7 | 16.6 |
| 315 | 7.7 | 9.7 | 12.1 | 18.7 |