Class 900 flanges - NPS 26 to 48 - Welding neck - serie B

Standard ASME B 16.47 - 1996 - Serie B
Description Class 900 flange - NPS 26 - Welding neck - serie B
Part number ASME B 16.47-B - WNF - C900 - NPS 26 - B 650 - RF
Product selection
Selector NPS (inch) Flange Ø (mm) Flange thickness (mm) Total thickness (mm) Number of drillings Fixing Ø (mm) Drillings Ø (mm)
1 26 1022 134.9 258.8 20 901.7 66.5
2 28 1105 147.6 276.4 20 971.6 73.2
3 30 1181 155.4 289.1 20 1035 79.2
4 32 1238 160.3 303.3 20 1092.2 79.2
5 34 1314 171.4 319 20 1155.7 85.9
6 36 1346 173 325.4 24 1200.2 79.2
7 38 1460.5 190.5 352.6 20 1289 91.9
8 40 1511.3 196.8 363.5 24 1339.8 91.9
9 42 1562.1 206.2 371.3 24 1390.6 91.9
10 44 1647.9 214.4 390.7 24 1463.5 98.6
11 46 1733.5 225.6 411 24 1536.7 104.6
12 48 1784.3 233.4 419.1 24 1587.5 104.6
NPS (inch)
Flange Ø (mm)
Flange thickness (mm)
Total thickness (mm)
Number of drillings
Fixing Ø (mm)
Drillings Ø (mm)