FLANGE DIMENSIONS TABLE SIZE (DN) 15 (1/2″)
| Class/Table | Flange O.D. | PCD | Bolts | Bolt Size | Hole Size | Minimum Flange Thickness* | |||
|---|---|---|---|---|---|---|---|---|---|
| Cast Iron | Ductile Iron | Copper Alloy | Steel | ||||||
| ANSI 125 B16.1 | 3 1/2″ / 89mm | 2 3/8″ / 60mm | 4 | 1/2″ | 5/8″ / 16mm | 5/16″ / 8mm | 5/16″ / 8mm | ||
| ANSI 150 B16.42 | 3 1/2″ / 89mm | 2 3/8″ / 60mm | 4 | 1/2″ | 5/8″ / 16mm | 5/16″ / 8mm | 5/16″ / 8mm | ||
| ANSI 600 B16.5 | 3 3/4″ / 95mm | 2 5/8″ / 67mm | 4 | 1/2″ | 5/8″ / 16mm | 9/16″ / 14mm | |||
| ANSI 900 B16.5 | 4 3/4″ / 121mm | 3 1/4″ / 83mm | 4 | 3/4″ | 7/8″ / 22mm | 7/8″ / 22mm | |||
| ANSI 1500 B16.5 | 4 3/4″ / 121mm | 3 1/4″ / 83mm | 4 | 3/4″ | 7/8″ / 22mm | 7/8″ / 22mm | |||
| ANSI 2500 B16.5 | 5 1/4″ / 133mm | 3 1/2″ / 89mm | 4 | 3/4″ | 7/8″ / 22mm | 1 1/8″ / 30mm | |||
| ISO7005-1/AS4331.1 ⑤ PN20 (ANSI 150) | 89mm | 60mm | 4 | M14 | 16mm | 11mm | |||
| ISO7005-1/AS4331.1 ⑤ PN50 (ANSI 300) | 95mm | 66mm | 4 | M14 | 16mm | 14mm | |||
| ISO7005-1/AS4331.1 ⑤ PN110 (ANSI 600) | 120mm | 66mm | 4 | M14 | 16mm | 14mm | |||
| ISO7005-1/AS4331.1 ⑤ PN150 (ANSI 900) | 120mm | 82mm | 4 | M20 | 22mm | 22mm | |||
| ISO7005-1/AS4331.1 ⑤ PN260 (ANSI 1500) | 135mm | 82mm | 4 | M20 | 22mm | 22mm | |||
| ISO7005-1/AS4331.1 ⑤ PN420 (ANSI 2500) | 89mm | 4 | M20 | 22mm | 30mm | ||||
| AS2129 ① Table C | 95mm | 67mm | 4 | 13mm | 14mm | 13mm | 13mm | 10mm | |
| AS2129 ① Table D | 95mm | 67mm | 4 | 13mm | 14mm | 13mm | 6mm | 10mm | |
| AS2129 ① Table E | 95mm | 67mm | 4 | 13mm | 14mm | 13mm | 6mm | 10mm | |
| AS2129 ① Table F | 95mm | 67mm | 4 | 13mm | 14mm | 13mm | 8mm | 10mm | |
| AS2129 ① Table H | 14mm | 83mm | 4 | 16mm | 17mm | 16mm | 10mm | 13mm | |
| AS2129 ① Table J | 114mm | 83mm | 4 | 16mm | 17mm | 16mm | 16mm | ||
| AS4087 ① PN14 | 95mm | 67mm | 4 | M12 | 14mm | 6mm | |||
| AS4087 ① PN16 | |||||||||
| AS4087 ① PN21 | |||||||||
| AS4087 ① PN35 | |||||||||
| BS10 Table D | 3 3/4″ / 95mm | 2 5/8″ / 67mm | 4 | 1/2″ | 9/16″ / 14mm | 1/2″ / 13mm | 1/4″ / 6mm | 3/8″ / 10mm | |
| BS10 Table E | 3 3/4″ / 95mm | 2 5/8″ / 67mm | 4 | 1/2″ | 9/16″ / 14mm | 1/2″ / 13mm | 1/4″ / 6mm | 3/8″ / 10mm | |
| BS10 Table F | 3 3/4″ / 95mm | 2 5/8″ / 67mm | 4 | 1/2″ | 9/16″ / 14mm | 1/2″ / 13mm | 5/16″ / 8mm | 3/8″ / 10mm | |
| BS10 Table H | 4 1/2″ / 114mm | 3 1/4″ / 83mm | 4 | 5/8″ | 11/16″ / 17mm | 5/8″ / 16mm | 3/8″ / 10mm | 1/2″ / 13mm | |
| BS10 Table J | 4 1/2″ / 114mm | 3 1/4″ / 83mm | 4 | 5/8″ | 11/16″ / 17mm | 5/8″ / 16mm | 5/8″ / 16mm | ||
| BS10 Table K | 4 1/2″ / 114mm | 3 1/4″ / 83mm | 4 | 5/8″ | 11/16″ / 17mm | 3/4″ / 19mm | 3/4″ / 19mm | ||
| BS4504 ② PN6 | 80mm | 55mm | 4 | M10 | 11mm | 12mm | |||
| BS4504 ② PN10 | 95mm | 65mm | 4 | M12 | 14mm | 14mm | |||
| BS4504 ② PN16 | 95mm | 65mm | 4 | M12 | 14mm | 14mm | |||
| BS4504 ② PN25 | 95mm | 65mm | 4 | M12 | 14mm | 16mm | 8mm | 16mm | |
| BS4504 ②PN40 | 95mm | 65mm | 4 | M12 | 14mm | 9mm | 16mm | ||
| BS4504 ②PN64 | 105mm | 75mm | 4 | M12 | 14mm | 20mm | |||
| BS4504 ② PN100 | 105mm | 75mm | 4 | M12 | 14mm | 20mm | |||
| EN1092-1/2/3 ③ PN6 | 80mm | 55mm | 4 | M10 | 11mm | 12mm | ④ | 12mm | |
| EN1092-1/2/3 ③ PN10 | 95mm | 65mm | 4 | M12 | 14mm | 14mm | 14mm | ④ | 16mm |
| EN1092-1/2/3 ③ PN16 | 95mm | 65mm | 4 | M12 | 14mm | 14mm | 14mm | ④ | 16mm |
| EN1092-1/2/3 ③ PN25 | 95mm | 65mm | 4 | M12 | 14mm | 16mm | 14mm | ④ | 16mm |
| EN1092-1/2/3 ③ PN40 | 95mm | 65mm | 4 | M12 | 14mm | ④ | 16mm | ||
| EN1092-1/2/3 ③ PN63 | 105mm | 75mm | 4 | M12 | 14mm | ④ | 20mm | ||
| EN1092-1/2/3 ③ PN100 | 105mm | 75mm | 4 | M12 | 14mm | ④ | 20mm | ||
① AS2129 still in use but now only covers Table D to H. Table C now obsolete, Table J to T now replaced by AS4331.1 which is a replication of ISO7500-1 which in turn is equivalent to ASME 150-2500 class ANSI B16.5. AS4331.1 and ISO 7005-1 also incorporates previous DIN PN rated flanging. AS4087 is the new standard covering Table D to H. The same drilling is specified but the PN rating system is used (PN14 to PN35) and in some cases flange thickness varies slightly. AS4087 PN14 & PN16 are the same drilling as AS2129 Table D. AS4087 PN21 is the same drilling and rating as AS2129 Table F. AS4087. AS4087 PN14 & PN16 is the same drilling as AS2129 Table D. AS4087 PN21 is the same rating and drilling as AS2129 Table F and PN35 is the same drilling as Table H. AS4087 specifies raised face in Ductile Iron PN16 & PN35 and flat face in Grey Cast Iron PN14, PN21, PN35. Click here to view full AS4087 flanging dimensions.
② British metric standard BS4504 is now obsolete and replaced by EN1092-1 edition 09-2008 for steel flanges which also incorporates DIN2501 standard. EN1092-1 is also published in the British standards as BS-EN1092-1. Flange drillings in EN1092-1 are generally the same as BS4504 but EN1092-1 covers a wider range.
③ EN1092-1 is for steel flanges, EN1092-2 is for Iron flanges, EN1092-3 is for Copper Alloy flanges, EN1092-4 is for Aluminium flanges. Regarding EN1092-2 Iron flanges, these figures are for integral flanges on valves, etc. Cast (Grey) Iron thicknesses are shown in Cast Iron column. EN1092-2 specifies a thinner flange thickness for Ductile Iron in larger sizes which is shown in the Ductile Iron column. For full EN1092-1 table Click here EN1092-1 is for steel flanges.
④ Refer EN1092-3 copper alloy, EN1092-4 aluminium alloy.
⑤ ISO7005-1 & ISO 7005-2 (which AS4331.1 mirrors) replaces DIN 2501 & DIN 2533 and BS4504 PN6 to 40. ISO7005-1 & 7005-2 PN6 to 40 is the same as EN1092-1 (note some flanges thicknesses vary slightly) but also incorporates ANSI flanging redesignated as PN20, PN50, PN110, PN150, PN260, PN420. ISO7005-1/AS4331.1 is steel flanges, ISO7005-2/AS4331.2 is iron flanges, ISO7005-3/AS4331.3 is copper alloy flanges. AS4331.1 is a reproduction of ISO7005-1, AS4331.2 is a reproduction of ISO7005-2, AS4331.3 is a reproduction of ISO7005-3.
* Varies according to flange type (thickness includes raised face height where applicable) refer to standard
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