EN 1092-1 PN 25 Type 01 Flange Dimension
DNMating dimensionsBore diametersFlange thickness
Outside
diameter

D
Diameter
of bolt
circle
K
Diameter
of bolt
hole
L
Bolting
NumberSizeB1C1
109060144M1218.014
159565144M1222.014
2010575144M1227.516
2511585144M1234.516
32140100184M1643.518
40150110184M1649.518
50165125184M1661.520
65185145188M1677.522
80200160188M1690.524
100235190228M20116.026
125270220268M24141.528
150300250268M24170.530
2003603102612M24221.532
2504253703012M27276.535
3004854303016M27327.538
3505554903316M30359.542
4006205503616M33411.048
4506706003620M33462.054
5007306603620M33513.558
6008457703920M36616.568
7009608754224M39b85
8001 0859904824M4595
9001 1851 0904828M45b
1 0001 3201 2105628M52b
1 200d
1 400
1 600
1 800
2 000
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 To be specified by the purchaser.
c Use is limited up to DN 500.
d Only mating dimensions fixed, see Annex J

EN 1092-1 PN 25 Flanges Dimension PDF:

https://www.zzflange.com/wp-content/uploads/2025/08/EN-1092-1-PN-25-Flanges-Dimension.pdf