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ANSI B16.47 Series B Class 150 Flanges

Series B 150 Weld Neck Flange

Series B 150 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)
2630.941.571.692826.943.4426.0629.315.50.8836120373
2832.941.691.823028.943.6928.0631.315.750.8840140454
3034.941.691.9432313.8830.0633.3160.8844150543
3237.061.752.073433.064.1932.0635.446.250.8848170648
3439.561.882.1936.2535.124.2834.0637.696.75140210783
3641.6222.2538.2537.194.5736.0639.756.75144240890
3844.252.072.4440.2539.254.8238.1242.127.51.12402901089
4046.252.132.5742.541.31540.1244.127.751.12443101247
4248.252.252.6344.543.385.1942.1246.127.751.12483451393
4450.252.322.7546.545.385.3244.1248.1281.12523701579
4652.812.382.8848.6247.445.6346.1250.568.51.25404351824
4854.812.5350.7549.55.8248.1252.568.751.25444802045
5056.812.633.1352.7551.5650.1254.5691.25485202284
5258.812.693.2554.7553.566.1352.1256.569.251.25525502547
54612.753.3856.7555.626.3254.1258.759.51.25566202848
56632.823.558.7557.696.556.1260.759.751.25606503144
5865.942.883.6260.7559.696.8258.1263.44101.38487803560
6067.942.943.756361.81760.1265.4410.251.38528503913

Dimensions are in inches. Weights are in pounds.

(1)- Bolt lengths 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 150 Flange PDF (for printing).