Dimensions of Class 600 RF Weld Neck Flanges

Expired

All dimensions are in "mm" unless noted otherwise.

Dimensions of Class 600 RF Weld Neck Flanges as per ASME B16.5.

Weld Neck Flange

Nominal
Pipe Size		 Outside Dia
of Flange
(O)		 Thick of
Flange
(C)		 Dia of
Raised Face
(R)		 Dia of
Hub at Base
(X)		 Dia of
Hub at End
(A)		 Length
thru Hub
(V)		 No of
Holes		 Dia of
Holes
(H)		 Dia of
Bolts		 Dia of
Bolt Circle
(B)		 Approx
weight
(kg)
1/2 95.3 14.2 35.1 38.1 21.3 52.3 4 15.7 1/2 66.5 1
3/4 117.3 15.7 42.9 47.8 26.7 57.2 4 19.1 5/8 82.6 2
1 124 17.5 50.8 53.8 33.5 62 4 19.1 5/8 88.9 2
1-1/4 133.4 20.6 63.5 63.5 42.2 66.5 4 19.1 5/8 98.6 3
1-1/2 155.4 22.4 73.2 69.9 48.3 69.9 4 22.4 3/4 114.3 4
2 165.1 25.4 91.9 84.1 60.5 73.2 8 19.1 5/8 127 5
2-1/2 190.5 28.4 104.6 100.1 73.2 79.2 8 22.4 3/4 149.4 8
3 209.6 31.8 127 117.3 88.9 82.6 8 22.4 3/4 168.1 10
3-1/2 228.6 35.1 139.7 133.4 101.6 85.9 8 25.4 7/8 184.2 12
4 273.1 38.1 157.2 152.4 114.3 101.6 8 25.4 7/8 215.9 19
5 330.2 44.5 185.7 189 141.2 114.3 8 28.4 1 266.7 31
6 355.6 47.8 215.9 222.3 168.4 117.3 12 28.4 1 292.1 37
8 419.1 55.6 269.7 273.1 219.2 133.4 12 31.8 1-1/8 349.3 54
10 508 63.5 323.9 342.9 273.1 152.4 16 35.1 1-1/4 431.8 86
12 558.8 66.5 381 400.1 323.9 155.4 20 35.1 1-1/4 489 102
14 603.3 69.9 412.8 431.8 355.6 165.1 20 38.1 1-3/8 527.1 127
16 685.8 76.2 469.9 495.3 406.4 177.8 20 41.1 1-1/2 603.3 177
18 743 82.6 533.4 546.1 457.2 184.2 20 44.5 1-5/8 654.1 215
20 812.8 88.9 584.2 609.6 508 190.5 24 44.5 1-5/8 723.9 268
24 939.8 101.6 692.2 717.6 609.6 203.2 24 50.8 1-7/8 838.2 376
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