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ANSI B16.47 Series B Class 75 Flanges

Series B 75 Weld Neck Flange

Series B 75 Blind Flange

(Click any image above to enlarge it and lock it in place, then scroll to the bottom table for dimensions)
ThicknessDrillingWeight
Nom SizeODWeld NeckBlindOD of RFDia at BaseBoreLTHDia BevelBolt CircleBolt LengthHole Dia# of HolesWeld NeckBlind
OCCRXBYA(1)(2)
26301.251.2527.7526.62flanges, 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 flanges2.2526.0628.54.50.753680255
28321.251.2529.7528.622.3828.0630.54.50.754085290
30341.251.2531.7530.622.530.0632.54.50.754490330
32361.321.3833.7532.622.6932.0634.54.750.7548105390
34381.321.4435.7534.622.8234.0636.54.750.7552110430
3640.691.381.613836.813.3236.0639.065.250.8840145518
3842.691.441.694038.813.4438.0641.065.50.8840160595
4044.691.441.694240.813.5740.0643.065.50.8844170760
4246.691.51.824442.813.6942.0645.065.50.8848185895
4449.251.631.8846.2544.884.0744.0647.3861362301065
4651.251.691.9448.2546.884.1946.0649.386.251402451185
4853.251.752.0750.2548.884.3248.0651.386.51442701315
5055.251.822.1352.2550.944.550.0653.386.51442901505
5257.381.822.1954.2552.944.6952.0655.56.751483101665
5459.381.882.3256.25554.8854.0657.56.751483401840
56621.942.3858.557.125.2556.0659.887.251.12404002110
586422.4460.559.125.3858.0661.887.251.12444302300
60662.132.5762.561.125.6360.0663.887.751.12444752500

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 75 Flange PDF (for printing).