EN 1092-1 PN 16 Type 01 Flange Dimension
DNMating dimensionsBore diametersFlange
thickness
Outside
diameter
Diameter
of bolt
circle
Diameter
of
bolt hole
Bolting
DKLNumberSizeB1C1
109060144M1218.014
159565144M1222.014
2010575144M1227.516
2511585144M1234.516
32140100184M1643.518
40150110184M1649.518
50165125184M1661.520
65185145188bM1677.520
80200160188M1690.520
100220180188M16116.022
125250210188M16141.522
150285240228M20170.524
2003402952212M20221.526
2504053552612M24276.529
3004604102612M24327.532
3505204702616M24359.535
4005805253016M27411.038
4506405853020M27462.042
5007156503320M30513.546
6008407703620M33616.555
7009108403624M33c63
8001 0259503924M3674
9001 1251 0503928M3682
1 0001 2551 1704228M39c90
1 2001 4851 3904832M45c
1 4001 6851 5904836M45
1 6001 9301 8205640M52
1 8002 1302 0205644M52
2 0002 3452 2306248M56
a  For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter and the nominal value dimensions A, N3 and R1 and their tolerances are included for guidance only.
b  According to EN 1092-2 (Cast iron flanges) and EN 1092-3 (Copper alloy flanges), the flanges in this DN and PN may be supplied with 4 holes. Where steel flanges are required with 4 holes, these may be supplied by
agreement between flange manufacturer and purchaser.
c  To be specified by the purchaser.
d  Use is limited up to DN 600.

EN 1092-1 PN 16 Flanges Dimension PDF:

https://www.zzflange.com/wp-content/uploads/2025/08/EN-1092-1-PN-16-Flanges-Dimension.pdf