Descrizione
| fi | fi (mm) |
| 3/8″ | 21.3 |
| 1/2″ | 21.3 |
| 3/4″ | 26.9 |
| 1″ | 33.7 |
| 1″1/4 | 42.4 |
| 1″1/2 | 48.3 |
| 2″ | 60.3 |
| 2″1/2 | 76.1 |
| 3″ | 88.9 |
| 4″ | 114.3 |
| 5″ | 139.7 |
| 6″ | 168.3 |
Tubi zincati vite-manicottto da 6 m Norma EN 10255
| fi | fi (mm) |
| 3/8″ | 21.3 |
| 1/2″ | 21.3 |
| 3/4″ | 26.9 |
| 1″ | 33.7 |
| 1″1/4 | 42.4 |
| 1″1/2 | 48.3 |
| 2″ | 60.3 |
| 2″1/2 | 76.1 |
| 3″ | 88.9 |
| 4″ | 114.3 |
| 5″ | 139.7 |
| 6″ | 168.3 |