PN 40 Type 12 Flange Dimension
DNMating dimensionsBore diametersFlange thicknessLengthNeck diametersCorner
radii


R1
Outside
diameter

D
Diameter
of bolt
circle

K
Diameter
of
bolt hole

L
Bolting
NumberSizeB1C2H1N2
109060144M1218.01622304
159565144M1222.01622354
2010575144M1227.51826454
2511585144M1234.51828524
32140100184M1643.51830606
40150110184M1649.51832706
50165125184M1661.52034846
65185145188M1677.522381046
80200160188M1690.524401188
100235190228M20116.024441458
125270220268M24141.526481708
150300250268M24170.5285220010
2003753203012M27221.5345226010
2504503853312M30276.5386031212
3005154503316M30327.5426738012
3505805103616M33359.5467242412
4006605853916M36411.0507847812
4506856103920M36462.0578452212
5007556704220M39513.5579057612
6008907954820M45616.57210068612
700b
800
900
1 000
1 200
1 400
1 600
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.
c Use is limited up to DN 600.
d To be specified by the purchaser.

EN 1092-1 PN 40 Flanges Dimension PDF:

https://www.zzflange.com/wp-content/uploads/2025/08/EN-1092-1-PN-40-Flanges-Dimension.pdf