EN 1092-1 PN 25 Type 11 Flange Dimension
DNMating dimensionsOutside
diameter
of neck

A
Flange thicknessLengthNeck diametersCorner
radii

   R1
Outside
diameter

D
Diameter
of bolt
circle
K
Diameter
of bolt
hole
L
Bolting
NumberSizeC2H2H3N1
109060144M1217.216356284See Annex A
159565144M1221.316386324
2010575144M1226.918406404
2511585144M1233.718406464
32140100184M1642.418426566
40150110184M1648.318457646
50165125184M1660.320488756
65185145188M1676.1225210906
80200160188M1688.92458121058
100235190228M20114.32465121348
125270220268M24139.72668121628
150300250268M24168.328751219210
2003603102612M24219.130801624410
2504253703012M27273.032881829812
3004854303016M27323.934921835212
3505554903316M30355.6381002039812
4006205503616M33406.4401102045212
4506706003620M33457.0461102050012
5007306603620M33508.0481252055812
6008457703920M36610.0481252066012
7009608754224M39711.0501292076012
8001 0859904824M45813.0531382286412
9001 1851 0904828M45914.0571482496812
1 0001 3201 2105628M521 016.063160241 07016
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