DIMENSION TABLES FOR 450mm (18 Inch) FLANGES

Dimensional tables for PN, ANSI and BS10 DN450mm (18 Inch) flanges.

Dimensions Tables for Flanges
DIMENSION TABLES FOR 450mm (18 Inch) FLANGES
BS EN
1092
DIAMETER
OF FLANGE
(A)
BOLT
CIRCLE
DIAMETER
(G)
number
OF BOLTS
BOLT SIZE DIAMETER
OF HOLES
(D)
DIAMETER
OF RAISED
FACE
(C)
HEIGHT
OF RAISED
FACE
(F)
THICKNESS
(E)

PN

PN 6 595 550 16 M20 22 520 22
PN 10 615 565 20 M24 26 532 28
PN 16 640 585 20 M27 30 550 40
PN 25 670 600 20 M33 36 555 46
PN 40 685 610 20 M36 39 560 57
PN 64 - - - - - - -
PN 100 - - - - - - -

ANSI

Class 125 / 150 25 (635) 22 3/4 (578) 16 1 1/8 (29) 1 1/4 (32) 21 (533) 1/16 (2) 1 9/16 (40)
Class 300 28 (711) 24 3/4 (629) 24 1 1/4 (32) 1 3/8 (35) 21 (533) 1/16 (2) 2 3/8 (60)
Class 600 29 1/4 (743) 25 3/4 (654) 20 1 5/8 (41) 1 3/4 (44) 21 (533) 1/4 (6) 3 1/4 (83)
Class 900 31 (787) 27 (686) 20 1 7/8 (48) 2 (51) 21 (533) 1/4 (6) 4 (102)
Class 1500 36 (914) 30 1/2 (775) 16 2 3/4 (70) 2 7/8 (73) 21 (533) 1/4 (6) 6 3/8 (162)

BS 10

Table A 25 1/4 (641) 23 (584) 12 7/8 (22) 1 (25) - 1 1/8 (29)
Table D 25 1/4 (641) 23 (584) 12 7/8 (22) 1 (25) - 1 1/8 (29)
Table E 25 1/4 (641) 23 (584) 16 7/8 (22) 1 (25) - 1 3/8 (35)
Table F 26 1/2 (673) 24 (610) 20 1 1/8 (29) 1 1/4 (32) - 1 7/8 (48)
Table H 26 1/2 (673) 24 (610) 20 1 1/8 (29) 1 1/4 (32) 21 (533) 1/16 (2)