Flange Types And Dimensions

SizeStandardClassOutside øPitch Circle øBolt Hole øNo. of Bolt Holes
1/2″ (DN15)ASME B16.51509060.315.94
3009566.715.94
BS EN1092 Pt.1PN109565144
PN16
BS10Table D9566.714.34
Table E
3/4″ (DN20)ASME B16.515010069.915.94
30011582.619.14
BS EN1092 Pt.1PN1010575144
PN16
BS10Table D101.67314.34
Table E
1″ (DN25)ASME B16.515011079.415.94
30012588.919.14
BS EN1092 Pt.1PN1011585144
PN16
BS10Table D114.382.614.34
Table E
1 1/2″ (DN40)ASME B16.515012598.415.94
300155114.322.24
BS EN1092 Pt.1PN10150110184
PN16
BS10Table D133.498.414.34
Table E
2″ (DN50)ASME B16.5150150120.719.14
30016512719.18
BS EN1092 Pt.1PN10165125184
PN16
BS10Table D152.4114.317.54
Table E
3″ (DN80)ASME B16.5150190152.419.14
300210168.322.28
BS EN1092 Pt.1PN10200160188
PN16
BS10Table D184.2146.117.54
Table E
4″ (DN100)ASME B16.5150230190.519.18
30025520022.28
BS EN1092 Pt.1PN10220180188
PN16
BS10Table D215.9177.817.54
Table E8
6″ (DN150)ASME B16.5150280241.322.28
300320269.922.212
BS EN1092 Pt.1PN10285240228
PN16
BS10Table D279.423517.58
Table E22.2
8″ (DN200)ASME B16.5150345298.522.28
300380330.225.412
BS EN1092 Pt.1PN10340295228
PN1612
BS10Table D336.6292.117.58
Table E22.2
10″ (DN250)ASME B16.5150405362.025.412
30044587.428.616
BS EN1092 Pt.1PN103953502212
PN1640535526
BS10Table D406.4355.622.28
Table E12
12″ (DN300)ASME B16.5150485431.825.412
300520450.831.816
BS EN1092 Pt.1PN104454002212
PN1646041026
BS10Table D457.2406.422.212
Table E25.4
14″ (DN350)ASME B16.5150535476.32812
300585514.43220
BS EN1092 Pt.1PN105054602216
PN1652047026
BS10Table D527.1469.925.412
Table E25.4