PN 100 Type 12 Flange Dimension
DNMating dimensionsBore
diameter
Flange thicknessLengthNeck diametersCorner
radii

R1
Outside
diameter

D
Diameter
of bolt
circle
K
Diameter
of bolt
hole
L
Bolting
NumberSizeB1C2H1N2
1010070144M1218.02028404
1510575144M1222.02028434
2013090184M1627.52230524
25140100184M1634.52432604
32155110224M2043.52432686
40170125224M2049.52634806
50195145264M2461.52836956
65220170268M2477.530401186
80230180268M2490.532441308
100265210308M27116036521588
125315250338M30141.540561888
1503552903312M301705446022510
2004303603612M33221.55210
2505054303912M36276.56012
3005855004216M39327.56812
3506555604816M45359.57412
400b
500
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 Only mating dimensions fixed, see Annex J

EN 1092-1 PN 100 Flanges Dimension PDF:

https://www.zzflange.com/wp-content/uploads/2025/08/EN-1092-1-PN-100-Flanges-Dimension.pdf