PN 63 Type 12 Flange
DNMating dimensionsBore
diameter
Flange thicknessLengthNeck diametersCorner
radii

R1
Outside
diameter

D

Diameter
of bolt
circle

K

Diameter
of bolt
hole

L
Bolting
Number
SizeB1C2H1N2
1010070144M1218.02028404
1510575144M1222.02028434
2013090184M1627.52230524
25140100184M1634.52432604
32155110224M2043.52432686
40170125224M2049.52634806
50180135224M2061.52636906
65205160228M2077.526401126
80215170228M2090.528441258
100250200268M24116.030521528
125295240308M27141.534561858
150345280338M30170.5366021510
2004153453612M33221.54210
2504704003612M33276.54612
3005304603616M33327.55212
3506005253916M36359.55612
4006705854216M39411.06012
500b
600
700
800
900
1 000
1 200
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 63 Flanges Dimension PDF:

https://www.zzflange.com/wp-content/uploads/2025/08/EN-1092-1-PN-63-Flanges-Dimension.pdf