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    Size DN600

    FLANGE DIMENSIONS TABLE SIZE (DN) 600 (24″)

    Class/Table Flange O.D. PCD Bolts Bolt Size Hole Size Minimum Flange Thickness*
    Cast Iron Ductile Iron Copper Alloy Steel
    ASME Class 125 B16.1 32″ / 813mm 29 1/2″ / 749mm 20 1 1/4″ 1 3/8″ / 35mm 1 7/8″ / 48mm 1 7/8″ / 48mm
    ASME Class 150 B16.5/B16.42 32″ / 813mm 29 1/2″ / 749mm 20 1 1/4″ 1 3/8″ / 35mm 48mm
    ASME Class 250 B16.1 36″ / 914mm 32″ / 813mm 24 1 1/2″ 1 5/8″ / 41mm 70mm
    ASME Class 300 B16.5/B16.42 36″ / 914mm 32″ / 813mm 24 1 1/2″ 1 5/8″ / 41mm 70mm 2 3/4″ / 70mm
    ASME Class 600 B16.5 37″ / 940mm 33″ / 838mm 24 1 7/8″ 2″ / 51mm 4″ / 102mm
    ASME Class 900 B16.5 41″ / 1041mm 34″ / 864mm 20 2 1/2″ 2 5/8″ / 67mm 5 1/2″ / 140mm
    ASME Class 1500 B16.5 46″ / 1168mm 39″ / 991mm 16 3 1/2″ 3 5/8″ / 92mm 8″ / 203mm
    ISO7005-1/AS4331.1⑤ PN20 (ANSI 150) 815mm 749.5mm 20 M33 35.5mm 35mm
    ISO7005-1/AS4331.1⑤ PN50 (ANSI 300) 915mm 813mm 24 M39 42mm 35mm
    ISO7005-1/AS4331.1⑤ PN110 (ANSI 600) 940mm 838mm 24 M48 51mm 35mm
    ISO7005-1/AS4331.1⑤ PN150 (ANSI 900) 1040mm 901.5mm 20 M64 68mm 35mm
    ISO7005-1/AS4331.1⑤ PN260 (ANSI 1500) 1170mm 990.5mm 16 M49 94mm 35mm
    ISO7005-1/AS4331.1⑤ PN420 (ANSI 2500)
    AS2129① Table C 825mm 756mm 16 M27 30mm 41mm 41mm 35mm
    AS2129① Table D 825mm 756mm 16 M27 30mm 35mm 35mm 38mm
    AS2129① Table E 825mm 756mm 16 M30 33mm 41mm 38mm 51mm
    AS2129① Table F 850mm 781mm 24 M33 36mm 44mm 41mm 41mm
    AS2129① Table H 850mm 781mm 24 M33 36mm 64mm 57mm 57mm
    AS2129① Table J 850mm 781mm 24 M36 39mm 70mm
    AS4087① PN14 825mm 756mm 16 M27 30mm 41mm
    AS4087 ① PN16 825mm 756mm 16 M27 30mm 42mm 48mm
    AS4087① PN21 850mm 781mm 24 M33 36mm 44mm 58mm
    AS4087① PN35 850mm 781mm 24 M33 36mm 64mm 54mm 68mm
    BS10 Table D 32 1/2″ / 826mm 29 3/4″ / 756mm 16 1″ 1 1/8″ / 29mm 1 3/8″ / 35mm 1 3/8″ / 35mm 1 3/8″ / 35mm
    BS10 Table E 232 1/2″ / 826mm 29 3/4″ / 756mm 16 1 1/8″ 1 1/4″ / 32mm 1 5/8″ / 41mm 1 1/2″ / 38mm 1 1/2″ / 38mm
    BS10 Table F 33 1/2″ / 851mm 30 3/4″ / 781mm 24 1 1/4″ 1 3/8″ / 35mm 1 3/4″ / 44mm 1 5/8″ / 41mm 1 5/8″ / 41mm
    BS10 Table H 33 1/2″ / 851mm 30 3/4″ / 781mm 24 1 1/4″ 1 3/8″ / 35mm 2 1/2″ / 64mm 2 1/4″ / 57mm 2 1/4″ / 57mm
    BS10 Table J 33 1/2″ / 851mm 30 3/4″ / 781mm 24 1 3/8″ 1 1/2″ / 38mm 2 3/4″ / 70mm
    ISO7005-1/2/AS4331.1/.2⑤ PN6 755mm 705mm 20 M24 26mm 30mm 30mm
    ISO7005-1/2/AS4331.1/.2⑤ PN10 780mm 725mm 20 M27 30mm 36mm 30mm 28mm
    ISO7005-1/2/AS4331.1/.2⑤ PN16 840mm 770mm 20 M33 36mm 48mm 36mm 54mm
    ISO7005-1/2/AS4331.1/.2⑤ PN25 845mm 770mm 20 M36 39mm 56mm 42mm 58mm
    ISO7005-1/2/AS4331.1/.2⑤ PN40 890mm 795mm 20 M45 48mm 58mm 72mm
    BS4504② PN6 755mm 705mm 20 M24 26mm 30mm
    BS4504② PN10 780mm 725mm 20 M27 30mm 36mm
    BS4504② PN16 840mm 770mm 20 M33 36mm 48mm 40mm
    BS4504② PN25 845mm 770mm 20 M36 39mm 46mm
    BS4504② PN40 890mm 795mm 20 M45 48mm 60mm
    BS4504② PN64 930mm 820mm 20 M52 56mm 76mm
    BS4504② PN100 990mm 875mm 20 M56 62mm 104mm
    EN1092-1/2/3③ PN6 755mm 705mm 20 M24 26mm 36mm 30mm
    EN1092-1/2/3③ PN10 780mm 725mm 20 M27 30mm 36mm 30mm 28mm
    EN1092-1/2/3③ PN16 840mm 770mm 20 M33 36mm 48mm 36mm 54mm
    EN1092-1/2/3③ PN25 845mm 770mm 20 M36 39mm 56mm 42mm 58mm
    EN1092-1/2/3③ PN40 890mm 795mm 20 M45 48mm 58mm 72mm
    EN1092-1/2/3③ PN63 930mm 820mm 20 M52 56mm 76mm
    EN1092-1/2/3③ PN100 990mm 875mm 20 M56 62mm 104mm

    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.

    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.

    Refer EN1092-3 copper alloy, EN1092-4 aluminium alloy.

    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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