DIMENSION TABLES FOR 500mm (20 Inch) FLANGES

Dimensional tables for PN, ANSI and BS10 DN500mm (20 Inch) flanges.

Dimensions Tables for Flanges
DIMENSION TABLES FOR 500mm (20 Inch) FLANGES
BS EN
1092
DIAMETER
OF FLANGE
(A)
BOLT
CIRCLE
DIAMETER
(G)
number
OF BOLTS
BOLT SIZEDIAMETER
OF HOLES
(D)
DIAMETER
OF RAISED
FACE
(C)
HEIGHT
OF RAISED
FACE
(F)
THICKNESS
(E)

PN

PN 664560020M2022 570224 (2)
PN 1067062020M2426585228 (2)
PN 1671565020M3033 610244 (2)
PN 2573066020M3336615248 (2)
PN 4075567020M3942 615257 (2)
PN 6480070520M4548615268 (2)
PN 10087076020M5256 615294 (2)

ANSI

Class 125 / 15027 1/2 (699)25 (635)201 1/8 (29)1 1/4 (32)23 (584)1/16 1 11/16 (43)
Class 30030 1/2 (775)27 (686)241 1/4 (32)1 3/8 (35)23 (584)1/162 1/2 (64)
Class 60032 (813)281/2 (724) 241 5/8 (41)1 3/4 (44)23 (584)1/43 1/2 (89)
Class 90033 3/4 (857)29 1/2 (749)202 (51)2 1/8 (54)23 (584) 1/44 1/4 (108)
Class 150038 3/4 (984)323/4 (832)163 (76)3 1/8 (79)23 (584)1/47 (178)

BS 10

Table A27 3/4 (705)25 1/4 (641)127/8 (22)1 (25)---
Table D27 3/4 (705)25 1/4 (641)167/8 (22) 1 (25)---
Table E27 3/4 (705)25 1/4 (641)167/8 (22)1 (25)--1 1/4 (32)
Table F29 (737) 261/2 (673)241 1/8 (29)1 1/4 (32)--1 1/2 (38)
Table H29 (737)261/2 (673)241 1/8 (29)1 1/4 (32)231/2 (597) 1/162 (51)