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Flange Guide

Dimensions Orifice Weld Neck RF flanges ASME B16.36 Class 600

Weld Neck Orifice flange Raised Face type

Other Pressure Classes

300 -
600 -
900 -
NPS DIA
RF
OUT
SIDE
DIA
MIN
THK
FLG
HGT
FLG
HUB
DIA
HUB
DIA
DIA OF
TAB
R O T H X A Tg
1 50.8 125 36.6 81 54 33.5 6.4
1.1/2 73.0 155 36.6 84 70 48.3 6.4
2 92.1 165 36.6 84 84 60.3 6.4
2.1/2 104.8 190 36.6 87 100 73.0 6.4
3 127.0 210 36.6 87 117 88.9 9.5
4 157.2 275 38.1 102 152 114.3 12.7
6 215.9 355 47.7 117 222 168.3 12.7
8 269.9 420 55.6 133 273 219.1 12.7
10 323.8 510 63.5 152 343 273.0 12.7
12 381.0 560 66.7 156 400 323.8 12.7
14 412.8 605 69.9 165 432 355.6 12.7
16 469.9 685 76.2 178 495 406.4 12.7
18 533.4 745 82.6 184 546 457.2 12.7
20 584.2 815 88.9 190 610 508.0 12.7
24 692.2 940 101.6 203 718 609.6 12.7
Weld Neck Orifice flange
NPS BOLT
CIRCLE
NO OF
BOLTS
DIA OF
HOLES
DIA
STUD
BOLTS
STUD
BOLT
LENGTH
1 88.9 4 11/16 5/8 125
1.1/2 114.3 4 13/16 3/4 135
2 127.0 8 11/16 5/8 125
2.1/2 149.2 8 13/16 3/4 135
3 168.3 8 13/16 3/4 135
4 215.9 8 1 7/8 150
6 292.1 12 1.1/8 1 180
8 349.2 12 1.1/4 1.1/8 195
10 431.8 16 1.3/8 1.1/4 220
12 489.0 20 1.3/8 1.1/4 230
14 527.0 20 1.1/2 1.3/8 240
16 603.2 20 1.5/8 1.1/2 260
18 654.0 20 1.3/4 1.5/8 280
20 723.9 24 1.3/4 1.5/8 300
24 838.2 24 2 1.7/8 335

GENERAL NOTES:

Notes:

Measuring lengths of Stud Bolts and Hex bolts

Tolerances
Tolerances on all dimensions shall be as shown in ASME B16.5 except for those shown below.

Pressure Tap Location
Tolerance on location of center of pressure tap hole from flange face shall be:

Bore Diameter

PP
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