ANSI B16.47 Series A Class 150 flanges

Series A 150 Weld Neck Flange

Series A 150 Blind Flange

(Click any image above to enlarge it and lock it in place, then scroll to the bottom table for dimensions)
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 34.25 2.63 2.63 29.5 26.62 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 4.69 26 31.75 8.75 1.38 24 300 702
28 36.5 2.75 2.75 31.5 28.62 4.88 28 34 9 1.38 28 345 833
30 38.75 2.88 2.88 33.75 30.75 5.32 30 36 9.25 1.38 28 400 982
32 41.75 3.13 3.13 36 32.75 5.63 32 38.5 10.5 1.62 28 505 1237
34 43.75 3.19 3.19 38 34.75 5.82 34 40.5 10.5 1.62 32 540 1384
36 46 3.5 3.5 40.25 36.75 6.13 36 42.75 11 1.62 32 640 1676
38 48.75 3.38 3.38 42.25 39 6.13 38 45.25 11 1.62 32 720 1819
40 50.75 3.5 3.5 44.25 41 6.38 40 47.25 11 1.62 36 775 2040
42 53 3.75 3.75 47 43 6.69 42 49.5 11.5 1.62 36 890 2381
44 55.25 3.94 3.94 49 45 6.94 44 51.75 12 1.62 40 990 2717
46 57.25 4 4 51 47.12 7.25 46 53.75 12 1.62 40 1060 2961
48 59.5 4.19 4.19 53.5 49.12 7.5 48 56 12.5 1.62 44 1185 3348
50 61.75 4.32 4.32 55.5 51.25 7.94 50 58.25 13.25 1.88 44 1270 3716
52 64 4.5 4.5 57.5 53.25 8.19 52 60.5 13.75 1.88 44 1410 4156
54 66.25 4.69 4.69 59.5 55.25 8.44 54 62.75 14 1.88 44 1585 4639
56 68.75 4.82 4.82 62 57.38 8.94 56 65 14.25 1.88 48 1760 5132
58 71 5 5 64 59.38 9.19 58 67.25 14.75 1.88 48 1915 5675
60 73 5.13 5.13 66 61.38 9.38 60 69.25 15 1.88 52 2045 6154

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 A Class 150 Flange PDF (for printing).