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ANSI B16.47 Series B Class 150 Flanges

Series B 150 Weld Neck Flange

Series B 150 Blind Flange

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).