Dimensions of Class 900 RF Threaded Flanges

Expired

All dimensions are in "mm" unless noted otherwise.

Dimensions of Class 900 RF Threaded Flanges as per ASME B16.5.

Threaded Flange

Nominal
Pipe Size		 Outside Dia
of Flange
(D)		 Thick of
Flange
(B)		 Dia of
Raised Face
(G)		 Dia of
Hub at Base
(A)		 Length
thru Hub
(H)		 Min Thread
Length
(T)		 Min Counter
Bore
(Q)		 No of
Holes		 Dia of
Holes
(L)		 Dia of
Bolts
(inch)		 Dia of
Bolt Circle
(K)		 Approx
Weight
(kg)
1/2 120.7 22.4 35.1 38.1 31.8 22.4 23.6 4 22.4 3/4 82.6 2
3/4 130 25.4 42.9 44.5 35.1 25.4 29 4 22.4 3/4 88.9 2
1 149.4 28.4 50.8 52.3 41.1 28.4 35.8 4 25.4 7/8 101.6 4
1-1/4 158.8 28.4 63.5 63.5 41.1 30.2 44.5 4 25.4 7/8 111.3 4
1-1/2 177.8 31.8 73.2 69.9 44.5 31.8 50.5 4 28.4 1 124 5
2 215.9 38.1 91.9 104.6 57.2 38.1 63.5 8 25.4 7/8 165.1 11
2-1/2 244.3 41.1 104.6 124 63.5 47.8 76.2 8 28.4 1 190.5 16
3 241.3 38.1 127 127 53.8 41.1 92.2 8 25.4 7/8 190.5 12
4 292.1 44.5 157.2 158.8 69.9 47.8 117.6 8 31.8 1-1/8 235 24
5 349.3 50.8 185.7 190.5 79.2 53.8 144.5 8 35.1 1-1/4 279.4 38
6 381 55.6 215.9 235 85.9 57.2 171.5 12 31.8 1-1/8 317.5 50
8 469.9 63.5 269.7 298.5 101.6 63.5 222.3 12 38.1 1-3/8 393.7 77
10 546.1 69.9 323.9 368.3 108 71.4 276.4 16 38.1 1-3/8 469.9 111
12 609.6 79.2 381 419.1 117.3 76.2 328.7 20 38.1 1-3/8 533.4 147
14 641.4 85.9 412.8 450.9 130 82.6 360.4 20 41.1 1-1/2 558.8 181
16 704.9 88.9 469.9 508 133.4 85.9 411.2 20 44.5 1-5/8 616 193
18 787.4 101.6 533.4 565.2 152.4 88.9 462 20 50.8 1-7/8 685.8 272
20 857.3 108 584.2 622.3 158.8 91.9 512.8 20 53.8 2 749.3 331
24 1041.4 139.7 692.2 749.3 203.2 101.6 614.4 20 66.5 2-1/2 901.7 635
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