SERIES B
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ASME B16.47 Class 900 Series B Welding Neck Flanges
SPECIFICATIONS
▪ All dimensions are in inches
▪ 1/4" raised face will be added to the thickness unless
otherwise specified
otherwise specified
▪ 38" thru 60" sizes are the same as Series "A"
▪ Flat face option available
Nominal Pipe Size |
Outside Diameter | Minimum Thickness |
Raised Face Diameter |
Length Thru Hub |
Hub Diameter |
Minimum Fillet Radius |
Top of Hub |
Bore | Approximate Weight | Bolt Circle |
Number of Holes |
Diameter of Holes |
(O) | (T) | (R) | (Y) | (X) | (r) | (A) | (B) | (lbs) | (C) | |||
26 | 40.25 | 5.31 | 30.00 | 10.19 | 29.25 | 0.44 | 26 | Specified by purchaser |
1050 | 35.50 | 20 | 2.62 |
28 | 43.50 | 5.81 | 32.25 | 10.88 | 31.38 | 0.50 | 28 | Specified by purchaser |
1520 | 38.25 | 20 | 2.88 |
30 | 46.50 | 6.12 | 34.50 | 11.38 | 33.50 | 0.50 | 30 | Specified by purchaser |
1820 | 40.75 | 20 | 3.12 |
32 | 48.75 | 6.31 | 36.50 | 11.94 | 35.75 | 0.50 | 32 | Specified by purchaser |
2065 | 43.00 | 20 | 3.12 |
34 | 51.75 | 6.75 | 39.00 | 12.56 | 37.88 | 0.56 | 34 | Specified by purchaser |
2450 | 45.50 | 20 | 3.38 |
36 | 53.00 | 6.81 | 40.50 | 12.81 | 40.00 | 0.56 | 36 | Specified by purchaser |
2520 | 47.25 | 24 | 3.12 |