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Flange - Blind, ANSI Class 400, B16.47 Series A (in)

Written by Matt Milbury on . Posted in Blind Flange Datasheets

  • Dimensions per ASME B16.47 - Large Diameter Steel Flanges: NPS 26 Through NPS 60 Metric/Inch Standard
  • Bolt circle diameters are 1/8 inch larger than bolt diameter.

data bf b16.5 400 2500data bf b16.47

Pipe Size

(NPS)

Outside Diameter of Flange

A

Diameter of Raised Face

B

Thickness of Flange

C

Number of Bolt Holes

 

Diameter of Bolt Holes

 

Bolt Circle Diameter

P

Approx Weight

(lb)

26 38 1/4 29 1/2 3 7/8 28 1 7/8 34 1/2 1260
28 40 3/4 31 1/2 4 1/8 28 2 37 1520
30 43 33 3/4 4 3/8 28 2 1/8 39 1/4 1800
32 45 1/4 36 4 9/16 28 2 1/8 41 1/2 2080
34 47 1/2 38 4 13/16 28 2 1/8 43 1/2 2415
36 50 40 1/4 5 1/16 32 2 1/8 46 2815
38 47 1/2 40 3/4 4 7/8 32 1 7/8 44 2450
40 50 43 5 1/8 32 2 46 1/4 2850
42 52 45 5 1/4 32 2 48 1/4 2160
44 54 1/2 47 1/4 5 1/2 32 2 1/8 50 1/2 3635
46 56 3/4 49 1/2 5 3/4 36 2 1/8 52 3/4 4120
48 59 1/2 51 1/2 6 28 2 3/8 55 1/4 4725
50 61 3/4 53 5/8 6 1/4 32 2 3/8 57 1/2 5300
52 63 3/4 55 5/8 4 7/16 32 2 3/8 59 1/2 5820
54 67 57 7/8 6 3/4 28 2 5/8 62 1/4 6740
56 69 60 1/8 6 15/16 32 2 5/8 64 1/4 7350
58 71 62 1/8 7 1/8 32 2 5/8 66 1/4 7980
60 71 1/4 64 3/8 7 7/16 32 2 7/8 69 9125