Dimension of Class 1500 Flanges As Per ANSI B 16.5

Size D
O.D
B
Thk
G
R.F Dia
M
Hub O.D
H1
W/N
H2
Sorf
H3
Lap Joint
A
Neck O.D
B1
Wnrf ID
B2
ID SW
Lap/Sorf
K
PCD
N
No of Holes
O
Hole
DEP
P
Thread
T
½ 120.6 22.2 34.9 38.1 60.3 31.7 31.7 21.3 22.30 82.5 4 22.2 9.6 22.3
¾ 130.2 25.4 42.9 44.4 69.8 34.9 34.9 26.7 27.70 88.9 4 22.2 11.1 25.4
1 149.2 28.6 50.8 52.3 73.0 41.3 41.3 33.5 34.54 101.6 4 25.4 12.7 28.7
158.7 28.6 63.5 63.5 73.0 41.3 41.3 42.2 43.20 111.1 4 25.4 14.3 30.2
177.8 31.7 73.0 69.8 82.5 44.4 44.4 48.3 49.50 123.8 4 28.6 15.9 31.7
2 215.9 38.1 92.1 104.6 101.6 57.2 57.2 60.4 62.00 165.1 8 25.4 17.5 38.1
244.5 41.3 104.8 123.9 104.8 63.5 63.5 73.1 74.70 190.5   28.6 19.0 47.7
3 267.7 47.6 127.0 133.3 117.4 73.0 73.0 88.9 90.70 203.2 8 31.7   50.8
4 311.1 54.0 157,2 162.0 123.8 90.5 90.5 114.3 103.50 241.3 8 34.9   57.1
5 374.6 73.0 185.7 196.8 155.5 104.8 104.8 141.2 116.00 292.1 8 41.3 - 63.5
6 393.7 82.5 215.9 228.6 171.4 119.1 119.1 168.4 143.80 317.5 12 38.1 - 69.8
8 482.6 92.1 269.9 292.1 212.7 142.8 142.8 219.2 170.50 393.7 12 44.4 - 76.2
10 584.2 107.9 323,8 368.3 254.0 158.7 177.8 273.0 221.50 482.6 12 50.8   84.0
12 673.1 123.8 381.0 , 450.8 282.5 180.9 219.1 323.8 276.40 571.5 16 54.0 - 92.2
14 749.3 133.3 412.7 495.3 298.4   241.3 356.6 - 635.0 16 60.3 -  
16 825.5 146.1 469.9 552.4 311.1 - 260.3 406.4 - 704.8 16 66.7 - -
18 914.4 161.9 533.4 596.9 327.0 - 276.2 457.2 - 774.7 16 73.0 - -
20 984.2 177.8 584.2 641.3 355.6 - 292.1 508.0 - 831.8 16 79.4 - -
24 1168.4 203.2 692.1 762.0 406.4 - 330.2 609.6 - 990.6 16 92.1 - -

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