ASME B 16.47

Series A (MSS SP-44)

ClassWelding neckBlind
150NPS 26- 60NPS 26- 60
300NPS 26- 60NPS 26- 60
400NPS 26- 60NPS 26- 60
600NPS 26- 60NPS 26- 60
900NPS 26- 48NPS 26- 48

Series B (API 605)

ClassWelding neckBlind
75NPS 26- 60NPS 26- 60
150NPS 26- 60NPS 26- 60
300NPS 26- 60NPS 26- 60
400NPS 26- 36NPS 26- 36
600NPS 26- 36NPS 26- 36
900NPD 26- 36NPS 26- 36