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  
14"    350mm ASME B16.5 150 21 533 18 3/4 476 1 1/8 29 1 3/8 35 16 1/4 413   1/16 1.6 12
300 23 584 20 1/4 514 1 1/4 32 2 1/8 54 20
600 23 3/4 603 20 3/4 527 1 1/2 38 2 3/4 70  1/4 6.4
900 25 1/4 641 22    559 1 3/4 45 3 3/8 86
BS EN 1092/1 (PN) 16 20  1/2 520 18  1/2 470 1  1/16 27 1  3/16 30 17  1/4 438   5/32 4 16
25 21 7/8 555 19  5/16 490 1  3/16 30 1 1/2 38 17 11/16 450
40 22 13/16 580 20  1/16 510 1  5/16 33 1 13/16 46 18  5/16 465
BS 10 E 20 3/4 527 18 1/2 470 15/16 23 1    25   12
F 21 3/4 553 19 1/2 495 1  1/16 27 1 1/4 32 16
H 1 5/8 41 16 1/2 419   1/16 1.6
J 1  3/16 30 2 1/8 54
R 23 584 20 3/4 527 1  5/16 33 2 3/4 70
 
BACK