Flange Comparison Table
 
SIZE STAND-ARD CLASS FLANGE DIAMETER BOLT HOLE P.C.D. BOLT HOLE DIAMETER FLANGE THICKNESS RAISED FACE DIAMETER RAISED FACE HEIGHT No. OF BOLTS
D P d t R f N
ins mm ins mm ins mm ins mm ins mm ins mm  
5"    125mm ASME B16.5 150 10 254 8 1/2 216  7/8 22 15/16 23 7  5/16 186   1/16 1.6 8
300 11 279 9 1/4 235 1 3/8 35
600 13 330 10 1/2 267 1 1/8 29 1 3/4 45  1/4 6.4
900 13 3/4 349 11    279 1 3/8 34 2    51
BS EN 1092/1 (PN) 16 9 7/8 250 8 1/4 210  11/16 18  7/8 22 7 3/8 188  1/8 3 8
25 10 5/8 270 8 5/8 220 1  1/16 27 1  1/16 26
40
BS 10 E 10 254 8 1/4 210  11/16 18  11/16 18   8
F 11 279 9 1/4 235 13/16 21  7/8 22
H 1 1/8 29 7 178   1/16 1.6
J 15/16 24 1 1/2 38
R 1 5/8 41 12
 
BACK