| Nominal Size (mm) | Inches | OD (Phi mm) |
|---|---|---|
| DN 10 | 3/8″ | ∼ Ø 17 mm |
| DN 15 | 1/2″ | ∼ Ø 21 mm |
| DN 20 | 3/4″ | ∼ Ø 27 mm |
| DN 25 | 1″ | ∼ Ø 34 mm |
| DN 32 | 1 1/4″ | ∼ Ø 42 mm |
| DN 40 | 1 1/2″ | ∼ Ø 49 mm |
| DN 50 | 2″ | ∼ Ø 60 mm |
| DN 65 | 2 1/2″ | ∼ Ø 73 mm |
| DN 80 | 3″ | ∼ Ø 89 mm |
| DN 100 | 4″ | ∼ Ø 114 mm |
| DN 125 | 5″ | ∼ Ø 141 mm |
| DN 150 | 6″ | ∼ Ø 168 mm |
| DN 200 | 8″ | ∼ Ø 219 mm |
| DN 250 | 10″ | ∼ Ø 273 mm |
| DN 300 | 12″ | ∼ Ø 324 mm |
| DN 350 | 14″ | ∼ Ø 356 mm |
| DN 400 | 16″ | ∼ Ø 406 mm |
| DN 450 | 18″ | ∼ Ø 457 mm |
| DN 500 | 20″ | ∼ Ø 508 mm |
| DN 600 | 24″ | ∼ Ø 558 mm |