ANSI B16.47 Series A Class 300 Flanges
Class A 150 & 300 WeldNeck Flange Class A 150 & 300 Blind Flange
Series A 300 Weld Neck Flange
Series A 300 Blind Flange

 

B16.47 Series A Class 300 Weld Neck & Blind
                           Weld Neck                                    Blind
Nom Size   Thickness   Drilling Weight
OD Weld Neck Blind OD of  RF Dia at Base Bore LTH Dia Bevel Bolt Circle Bolt Length Hole Dia  # of Holes Weld Neck Blind
O C C R X B Y A   (1) (2)      
26 38.25 3.07 3.25 29.50 28.38 Texas Flange Flanges 7.19 26.00 34.50 10.75 1.75 28 605 1078
28 40.75 3.32 3.50 31.50 30.50 7.69 28.00 37.00 11.25 1.75 28 745 1315
30 43.00 3.57 3.69 33.75 32.56 8.19 30.00 39.25 12.00 1.88 28 870 1543
32 45.25 3.82 3.88 36.00 34.69 8.69 32.00 41.50 12.50 2.00 28 1005 1795
34 47.50 3.94 4.07 38.00 36.88 9.07 34.00 43.50 13.00 2.00 28 1145 2068
36 50.00 4.07 4.32 40.25 39.00 9.44 36.00 46.00 13.50 2.12 32 1275 2436
38 46.00 4.19 4.19 40.50 39.12 7.06 38.00 43.00 12.50 1.62 32 695 2001
40 48.75 4.44 4.44 42.75 41.25 7.56 40.00 45.50 13.25 1.75 32 840 2380
42 50.75 4.63 4.63 44.75 43.25 7.82 42.00 47.50 13.75 1.75 32 950 2688
44 53.25 4.82 4.82 47.00 45.25 8.06 44.00 49.75 14.25 1.88 32 1055 3079
46 55.75 5.00 5.00 49.00 47.38 8.44 46.00 52.00 15.00 2.00 28 1235 3499
48 57.75 5.19 5.19 51.25 49.38 8.75 48.00 54.00 15.25 2.00 32 1380 3896
50 60.25 5.44 5.44 53.50 51.38 9.07 50.00 56.25 16.00 2.12 32 1530 4442
52 62.25 5.63 5.63 55.50 53.38 9.32 52.00 58.25 16.50 2.12 32 1660 4906
54 65.25 5.94 5.94 57.75 55.50 9.88 54.00 61.00 17.50 2.38 28 2050 5684
56 67.25 6.00 6.00 59.75 57.62 10.19 56.00 63.00 17.75 2.38 28 2155 6098
58 69.25 6.19 6.19 62.00 59.62 10.44 58.00 65.00 18.00 2.38 32 2270 6669
60 71.25 6.38 6.38 64.00 61.62 10.69 60.00 67.00 18.50 2.38 32 2470 7274
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 A Class 300 Flange PDF (for printing).