Plain Collars / Welding Neck Collars
DIN
| Standard | PN | DN |
| 2641 | 6 | from 10 |
| 2642 | 10 | from 10 |
| 2655 | 25 | from 200 |
| 2656 | 40 | from 10 |
| 2673 | 10 | from 10 |
ASME (ANSI B16.5)
| Class | NPS |
| 150lbs | from 1/2" |
| 300lbs | from 1/2" |
| 400-2500lbs | from 1/2" |
Plain Collar EN 1092-1 Typ 32
| PN | DN |
| 6 | from 10 |
| 10 | from 200 |
| 16 | from 50 |
| 25 | from 200 |
| 40 | from 10 |
Welding Neck Collar EN 1092-1 Typ 34
| PN | DN |
| 10 | from 200 |
| 16 | from 50 |
| 25 | from 200 |
| 40 | from 10 |
