ANSI B16.47 Ser. B Class 300 Flanges

elbow-90

Series B 300 Weld Neck Flange

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Series B 300 Blind Flange

Thickness Drilling Weight
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 34.12 3.44 3.44 29 27.62 5.63 26.19 31.62 10.5 1.38 32 400 907
28 36.25 3.44 3.44 31 29.75 5.81 28.19 33.75 10.5 1.38 36 450 1023
30 39 3.63 3.63 33.25 32 6.16 30.25 36.25 11.25 1.5 36 550 1249
32 41.5 4 4 35.5 34 6.56 32.25 38.5 12 1.62 32 685 1556
34 43.62 4 4 37.5 36.12 6.75 34.25 40.62 12 1.62 36 750 1719
36 46.12 4 4 39.75 38 7.06 36.25 42.88 12.5 1.75 32 840 1921
38 48.12 4.31 4.31 41.75 40 7.5 38.25 44.88 13 1.75 36 915 2257
40 50.12 4.5 4.5 43.88 42 7.75 40.25 46.88 13.5 1.75 40 990 2549
42 52.5 4.63 4.63 46 44 8 42.31 49 14 1.88 36 1135 2876
44 54.5 4.94 4.94 48 46.19 8.38 44.31 51 14.5 1.88 40 1235 3304
46 57.5 5 5.06 50 48.38 8.69 46.31 53.75 15 2 36 1470 3766
48 59.5 5 5.25 52.25 50.31 8.75 48.31 55.75 15.25 2 40 1575 4183
50 61.5 5.38 5.44 54.25 52.38 9.19 50.31 57.75 15.75 2 44 1710 4629
52 63.5 5.56 5.61 56.25 54.44 9.5 52.31 59.75 16 2 48 1840 5096
54 65.88 5.32 5.81 58.25 56.5 9.38 54.31 62.12 16 2 48 1980 5678
56 69.5 6 6.12 60.5 58.81 10.5 56.31 65 17.75 2.38 36 2595 6642
58 71.94 6 6.31 62.75 60.94 10.75 58.31 67.44 18 2.38 40 2770 7347
60 73.94 5.88 6.5 65 62.94 10.63 60.31 69.44 18 2.38 40 2870 7980

Dimensions are in inches. Weights are in pounds.

(a) - Bolt lenghts are calculated based on bolting one WN to one Blind. (b) - Bolt diameter should be 1/8" less than the bolt hole diameter. Notes: Larger sizes as well as intermediate sizes can be furnished.

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In the lifeline of industries, our fittings make sure pipeline in fact life lines of our industries are in perfect fit always. we at Quality Forge & Fitting always strive to make fittings & flanges that are excellent in quality,rich in material content and made to perfection that will last forever.

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What Is Flange?

A flange is an external or internal ridge, or rim (lip), for strength, as the flange of an iron beam such as an I-beam or a T-beam; or for attachment to another object, as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera; or for a flange of a rail car or tram wheel. Thus flanged wheels are wheels with a flange on one side to keep the wheels from running off the rails. The term "flange" is also used for a kind of tool used to form flanges. Pipes with flanges can be assembled and disassembled easily. read more

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