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Location: Flange Tables

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). Below is a reference table for critical flange dimensions to help identify what standard you have.

15mm (1/2")

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

20mm (3/4")

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

25mm (1")

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

110

79.5

4

M14

16

PN25

115

85

4

M12

14

PN40

115

85

4

M12

14

32mm (1,1/4")

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

40mm (1,1/2")

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

50mm (2")

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. 

65mm (2,1/2")

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

80mm (3")

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

100mm (4")

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

125mm (5")

StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN142802358M1618
PN16-----
PN21-----
PN35-----
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

150mm (6")

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

200mm (8")

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

250mm (10")

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

300mm (12")

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
 

350mm (14")

StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN1452547012M2426
PN1647012M24M2426
PN2149516M27M2730
PN3549516M27M2730
AS 2129Table C52547012M2426
Table D4701222M2426
Table E4701222M2426
Table F4951625M2730
Table H4951625M2730
Table J49516292933
ANSI B16.5ANSI 150533476122529
ANSI 30051420292932
ANSI 60052720383538
ANSI 90055920383841
ANSI 150063516575760
ISO 7005 (DIN)PN649044512M2022
PN1046016M20M2022
PN1647016M24M2426
PN2047612M27M2729.5
PN2549016M30M3032.5
PN4051016M33M3335.5

400mm (16")

StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN1458052112M2426
PN1658052112M2426
PN2161055220M2730
PN3561055220M2730
AS 2129Table C58052112M2426
Table D58052112M2426
Table E58052112M2426
Table F61055220M2730
Table H61055220M2730
Table J61055220M2730
ANSI B16.5ANSI 150597540162529
ANSI 300648572203235
ANSI 600686603203841
ANSI 900705616204144
ANSI 1500826705166467
ISO 7005 (DIN)PN654049516M2022
PN1056551516M2426
PN1658052516M2730
PN2060054016M2729.5
PN2562055016M3336
PN4066058516M3639

450mm (18")

StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN14 Flange64058412M2426
PN16 Flange64058412M2426
PN21 Flange67561020M3033
PN35 Flange67551020M3033
AS 2129Table C Flange640584122226
Table D Flange640584122226
Table E Flange640584162226
Table F Flange675610202933
Table H Flange675610202933
Table J Flange675610203235
ANSI B16.5ANSI 150 Flange635578162932
ANSI 300 Flange711629243235
ANSI 600 Flange743654204144
ANSI 900 Flange787686204851
ANSI 1500 Flange914775167073
ISO 7005 (DIN)PN6 Flange59555016M2022
PN10 Flange61556520M2426
PN16 Flange64058520M2730
PN20 Flange63557816M3032.5
PN25 Flange-----
PN40 Flange-----

500mm (20")

StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN14 Flange70564116M2426
PN16 Flange70564116M2426
PN21 Flange73567324M3033
PN35 Flange73567324M3033
AS 2129Table C Flange705641162226
Table D Flange705641162226
Table E Flange705641162226
Table F Flange735673242933
Table H Flange735673242933
Table J Flange735673243236
ANSI B16.5ANSI 150 Flange699635202932
ANSI 300 Flange775686243235
ANSI 600 Flange813724244144
ANSI 900 Flange857749205154
ANSI 1500 Flange984832167679
ISO 7005 (DIN)PN6 Flange64560020M2022
PN10 Flange67062020M2426
PN16 Flange71565020M3033
PN20 Flange70063520M3032.5
PN25 Flange-----
PN40 Flange-----

600 mm (24")

StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 4087PN14 Flanges82575616M2730
PN16 Flanges82575616M2730
PN21 Flanges85078124M3336
PN35 Flanges75078124M3336
AS 2129Table C Flanges825756162530
Table D Flanges825756162530
Table E Flanges825756162933
Table F Flanges850781243236
Table H Flanges850781243236
Table J Flanges850781243539
ANSI B16.5ANSI 150 Flanges813749203235
ANSI 300 Flanges914813243841
ANSI 600 Flanges940838244851
ANSI 900 Flanges1041902206467
ANSI 1500 Flanges1168991168992
ISO 7005 (DIN)PN6 Flanges75570520M2426
PN10 Flanges78072520M2730
PN16 Flanges84077020M3336
PN20 Flanges815749.520M3336
PN25 Flanges-----
PN40 Flanges-----
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