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Flange Reference Chart

Flanges are commonly used to connect valves into pipework making it easier for removal and maintenance. There are many common flange standards and flanges within the same standard can etiher be flat (commonly cast iron, ductile iron) or raised face (commonly cast steel and stainless steel).

Standard Class Diameter Bolt Circle Diameter Number of Bolts Bolt Size Diameter of Bolt Hole
AS4087 PN14 95 67 4 M12 14
AS 2129 Table C 95 67 4 13 14
Table D 95 67 4 13 14
Table E 95 67 4 13 14
Table F 95 67 4 13 14
Table H 114 83 4 16 17
Table J 114 83 4 16 17
ANSI B16.5 ANSI 150 89 60 4 13 16
ANSI 300 95 67 4 13 16
ANSI 600 95 67 4 13 16
ANSI 900 121 83 4 19 22
ANSI 1500 121 83 4 19 22
ISO 7005 (DIN) PN6 80 55 4 M10 11
PN10 95 65 4 M12 14
PN16 95 65 4 M12 14
PN20 90 60.5 4 M14 16
PN25 95 65 4 M12 14
PN40 95 65 4 M12 14
Standard Class Diameter Bolt Circle Diameter Number of Bolts Bolt Size Diameter of Bolt Hole
AS4087 PN14 100 73 4 M12 14
AS 2129 Table C 100 73 4 13 14
Table D

100

 73 4 13 14
Table E 100 73 4 13 14
Table F 100 73 4 13 14
Table H 115 83 4 16 18
Table J 115 83 4 16 18
ANSI B16.5 ANSI 150 98 70 4 13 16
ANSI 300 117 83 4 16 19
ANSI 600 117 83 4 16 19
ANSI 900 130 89 4 19 22
ANSI 1500 130 89 4 19 22
ISO 7005 (DIN) PN6 90 65 4 M10 11
PN10 105 75 4 M12 14
PN16 105 75 4 M12 14
PN20 100 70 4 M14 16
PN25 105 75 4 M12 14
PN40 105 75 4 M12 14
Standard Class Diameter Bolt Circle Diameter Number of Bolts Bolt Size Diameter of Bolt Hole
AS4087 PN14 115 83 4 M12 14
AS 2129 Table C 115 83 4 13 14
Table D

115

 83 4 13 14
Table E 115 83 4 13 14
Table F 120 87 4 16 18
Table H 120 87 4 16 18
Table J 120 87 4 16 18
ANSI B16.5 ANSI 150 110 79 4 13 16
ANSI 300 125 89 4 16 19
ANSI 600 125 89 4 16 19
ANSI 900 102 4 22 25
ANSI 1500 102 4 22 25
ISO 7005 (DIN) PN6 100 78 4 M10 11
PN10 115 85 4 M12 14
PN16 115 85 4 M12 14
PN20 115 85 4 M14 16
PN25 115 85 4 M12 14
PN40 115 85 4 M12 14
Standard Class Diameter Bolt Circle Diameter Number of Bolts Bolt Size Diameter of Bolt Hole
AS4087 PN14 120 87 4 M12 14
AS 2129 Table C 120 87 4 13 14
Table D 120 87 4 13 14
Table E 120 87 4 13 14
Table F 135 98 4 16 18
Table H 135 98 4 16 18
Table J 135 98 4 16 18
ANSI B16.5 ANSI 150 117 89 4 13 16
ANSI 300 133 98 4 16 19
ANSI 600 133 98 4 16 19
ANSI 900 159 111 4 22 25
ANSI 1500 159 111 4 22 25
ISO 7005 (DIN) PN6 120 90 4 M12 14
PN10 140 100 4 M16 18
PN16 140 100 4 M16 18
PN20 120 89 4 M14 16
PN25 140 100 4 M16 18
PN40 140 100 4 M16 18
Standard Class Diameter Bolt Circle Diameter Number of Bolts Bolt Size Diameter of Bolt Hole
AS4087 PN14 135 98 4 M12 14
AS 2129 Table C 135 98 4 13 14
Table D 135 98 4 13 14
Table E 135 98 4 13 14
Table F 140 105 4 16 18
Table H 140 105 4 16 18
Table J 140 105 4 16 18
ANSI B16.5 ANSI 150 127 98 4 13 16
ANSI 300 156 114 4 19 22
ANSI 600 156 114 4 19 22
ANSI 900 178 124 4 25 29
ANSI 1500 178 124 4 25 29
ISO 7005 (DIN) PN6 130 100 4 M12 14
PN10 150 110 4 M16 18
PN16 150 110 4 M16 18
PN20 130 98.5 4 M14 16
PN25 150 110 4 M16 18
PN40 150 110 4 M16 18
StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN141501144M1618
PN161501144M1618
PN211651274M1618
PN351651274M1618
AS 2129Table C15011441618
Table D15011441618
Table E15011441618
Table F16512741618
Table H16512741618
Table J16512741922
ANSI B16.5ANSI 15015212141619
ANSI 30016512781619
ANSI 60016512781619
ANSI 90021616582225
ANSI 150021616582225
ISO 7005 (DIN)PN61401104M1214
PN101651254M1618
PN161651254M1618
PN20150*120.54M1618
PN251651254M1618
PN401651254M1618

*When made from cast or ductile iron the OD is 155mm. 

StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN141651274M1618
PN161651274M1618
PN211851468M1618
PN351851468M1618
AS 2129Table C16512741618
Table D16512741618
Table E16512741618
Table F18514681618
Table H18514681618
Table J18514681922
ANSI B16.5ANSI 15017814041619
ANSI 30019114981922
ANSI 60019114981922
ANSI 90024419182225
ANSI 150024419182529
ISO 7005 (DIN)PN61601304M1214
PN101851454M1618
PN161851454M1618
PN20180139.54M1618
PN251851458M1618
PN401851458M1618
StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN141851464M1618
PN161851464M1618
PN212051658M1618
PN352051658M1618
AS 2129Table C18514641618
Table D18514641618
Table E18514641618
Table F20516581618
Table H20516581618
Table J20516581922
ANSI B16.5ANSI 15019115241619
ANSI 30021016881922
ANSI 60021016881922
ANSI 90024119282225
ANSI 150026720382932
ISO 7005 (DIN)PN61901504M1618
PN102001608M1618
PN162001608M1618
PN20190152.54M1618
PN252001608M1618
PN401851608M1618
StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN142151784M1618
PN162151784M1618
PN212301918M1618
PN352301918M1618
AS 2129Table C21517841618
Table D21517841618
Table E21517881618
Table F23019181618
Table H23019181618
Table J23019181922
ANSI B16.5ANSI 15022919181619
ANSI 30025420081922
ANSI 60027321682225
ANSI 90029223582932
ANSI 150031124183235
ISO 7005 (DIN)PN62101704M1618
PN102201808M1624
PN162201808M1618
PN20230190.58M1618
PN252351908M2022
PN402351908M2022
StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN142552108M1618
PN162552108M1618
PN212802358M2022
PN352802358M2022
AS 2129Table C25521081618
Table D25521081618
Table E25521081618
Table F28023581922
Table H28023581922
Table J28023582226
ANSI B16.5ANSI 15025421681922
ANSI 30027923581922
ANSI 60033026782529
ANSI 90034927983235
ANSI 150037529283841
ISO 7005 (DIN)PN62402008M1618
PN102502108M1618
PN162502108M1618
PN202552168M2022
PN252702208M2426
PN402702208M2426
StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN142802358M1618
PN162802358M1618
PN2130526012M2022
PN3530526012M2022
AS 2129Table C28023581618
Table D28023581618
Table E28023581922
Table F305260121922
Table H305260121922
Table J305260122226
ANSI B16.5ANSI 15027924181922
ANSI 300318270121922
ANSI 600356292122529
ANSI 900381318122932
ANSI 1500394318123538
ISO 7005 (DIN)PN62652258M1618
PN102852408M2022
PN162852408M2022
PN20280241.58M2022
PN253002508M2426
PN403002508M2426
StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN143352928M1618
PN163352928M1618
PN2137032412M2022
PN3537032412M2022
AS 2129Table C33529281618
Table D33529281618
Table E33529281922
Table F370324121922
Table H370324121922
Table J370324122226
ANSI B16.5ANSI 15034329881922
ANSI 300381330121922
ANSI 600419349122932
ANSI 900470394123538
ANSI 1500483394124144
ISO 7005 (DIN)PN63202808M1618
PN103402958M2022
PN1634029512M2022
PN20345298.58M2022
PN2536031012M2426
PN4037532012M2730
StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN144053568M2022
PN164053568M2022
PN2143038112M2426
PN3543038112M2426
AS 2129Table C40535681922
Table D40535681922
Table E405356121922
Table F430381122226
Table H430381122226
Table J430381122530
ANSI B16.5ANSI 150406362122225
ANSI 300445387162529
ANSI 600508432163235
ANSI 900546470163538
ANSI 1500584483124151
ISO 7005 (DIN)PN637533512M1618
PN1039535012M2022
PN1640535512M2426
PN2040536212M2426
PN2542537012M2730
PN4045038512M3033
StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN1445540612M2022
PN1645540612M2022
PN2149043816M2426
PN3549043816M2426
AS 2129Table C455406121922
Table D455406121922
Table E455406122226
Table F490438162226
Table H490438162226
Table J490438162530
ANSI B16.5ANSI 150483432122225
ANSI 300521451162932
ANSI 600559489203235
ANSI 900610533203538
ANSI 1500673571165154
ISO 7005 (DIN)PN644039512M2022
PN1044540012M2022
PN1646041012M2426
PN2048543212M2426
PN2548543016M2730
PN4051545016M3033
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