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  
4"    100mm ASME B16.5 150 9 229 7 1/2 190  3/4 19 15/16 23 6  3/16 158   1/16 1.6 8
300 10 254 7 7/8 200  7/8 22 1 1/4 32
600 10 3/4 273 8 1/2 216 1 25 1 1/2 38  1/4 6.4
900 11 1/2 292 9 1/4 235 1 1/4 32 1 3/4 45
BS EN 1092/1 (PN) 16 8 5/8 220 7  1/16 180  11/16 18 13/16 20 6  3/16 158  1/8 3 8
25 9 1/4 235 7 1/2 190 15/16 23 15/16 24 6 3/8 162
40
BS 10 E 8 1/2 216 7 178  11/16 18  11/16 18   8
F 9 229 7 1/2 190  3/4 19
H 1 25 6 152   1/16 1.6
J 13/16 23 1 3/8 35
R 9 1/2 241 7 3/4 197
 
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