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ANSI B16.47 Ser. B Class 900 Flanges

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Series B 900 Weld Neck Flange Series B 900 Blind Flange  
     

Thickness Drilling Weights
Nom Size OD Weld Neck Blind OD of RF Dia at Base Bore LTH Dia Bevel Bolt Circle Bolt Length HoleDia  # of Holes Weld Neck Blind
O C C R X B Y A (1) (2)
26 40.25 5.31 6.06 30 29.25 flanges, flange, industrial flanges, industrial flange, industrial pipe flanges, industrial fittings, industrial pipe, industrial carbon steel, industrial blind, industrial blinds, industrial, industrial waterworks, industrial stainless steel, industrial steel, industrial weld, industrial forgings, industrial orifice, industrial slip, industrial steel flange, industrial steel flanges, industrial titanium flange, industrial titanium flanges 10.19 26 35.5 17.75 2.62 20 1050 2184
28 43.5 5.81 6.56 32.25 31.38 10.88 28 38.25 19.5 2.88 20 1520 2762
30 46.5 6.12 6.93 34.5 33.5 11.38 30 40.75 20.5 3.12 20 1820 3334
32 48.75 6.31 7.31 36.5 35.75 11.94 32 43 21 3.12 20 2065 3865
34 51.75 6.75 7.68 39 37.88 12.56 34 45.5 22.5 3.38 20 2450 4576
36 53 6.81 7.94 40.5 40 12.81 36 47.25 22.25 3.12 24 2520 4963
38 57.5 7.5 8.5 43.25 42.25 13.88 38 50.75 24.5 3.62 20 3385 6253
40 59.5 7.75 8.81 45.75 44.38 14.31 40 52.75 25 3.62 24 3620 6940
42 61.5 8.12 9.12 47.75 46.31 14.62 42 54.75 25.75 3.62 24 3960 7675
44 64.88 8.44 9.56 50 48.62 15.38 44 57.62 27 3.88 24 4300 8954
46 68.25 8.88 10.06 52.5 50.88 16.18 46 60.5 28.5 4.12 24 4640 10,426
48 70.25 9.19 10.38 54.5 52.88 16.5 48 62.5 29 4.12 24 4980 11,398
 

Dimensions are in inches. Weights are in pounds.

(1)- Bolt lenghts are calculated based on bolting one WN to one Blind. 
(2)- Bolt diameter should be 1/8" less than the bolt hole diameter
Note:

Larger sizes as well as intermediate sizes can be furnished.
ANSI B16.47 Series B Class 900 Flange PDF (for printing).