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Flange - Blind, ANSI Class 250, Industry Standard (in)

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data bf b16.5 150 300data bf b16.47

 

Flange - Blind, ANSI Class 250, Industry Standard (in)

  • Industry Standard Flanges have no national standard code or are they covered by any governing body.
  • Bolt circle diameters are 1/8 inch larger than bolt diameter.
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 32 7/16 2 13/16 28 1 1/8 34 1/2 853
28 40 3/4 34 15/16 2 15/16 28 1 1/8 37 1022
30 43 37 3/16 3 28 1 1/8 39 1/4 1168
32 45 1/4 39 7/16 3 1/8 28 1 1/8 41 1/2 1353
34 47 1/2 41 7/16 3 1/4 28 1 1/8 43 1/2 1560
36 50 43 11/16 3 3/8 32 2 1/8 46 1793
38 52 1/4 45 11/16 3 7/16 32 2 1/8 48 2003
40 54 1/2 47 15/16 3 9/16 36 2 1/8 50 1/4 2223
42 57 50 7/16 3 11/16 36 2 1/8 52 3/4 2533
44 59 1/4 52 11/16 4 3/4 36 2 1/8 55 2793
46 61 1/2 54 15/16 4 7/8 40 2 1/8 57 1/4 3109
48 65 58 7/16 4 40 2 1/8 60 3/4 3599

 

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