Type, size and class rating of ASME B 16.47 flanges

Spread the love

Series A (MSS SP-44)

Class Welding neck Blind
150 NPS 26- 60 NPS 26- 60
300 NPS 26- 60 NPS 26- 60
400 NPS 26- 60 NPS 26- 60
600 NPS 26- 60 NPS 26- 60
900 NPS 26- 48 NPS 26- 48

Series B (API 605)

Class Welding neck Blind
75 NPS 26- 60 NPS 26- 60
150 NPS 26- 60 NPS 26- 60
300 NPS 26- 60 NPS 26- 60
400 NPS 26- 36 NPS 26- 36
600 NPS 26- 36 NPS 26- 36
900 NPD 26- 36 NPS 26- 36