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    SIZE DN750

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    Size DN750

    FLANGE DIMENSIONS TABLE SIZE (DN) 750 (30″)

    Class/Table Flange O.D. PCD Bolts Bolt Size Hole Size Minimum Flange Thickness*
    Cast Iron Ductile Iron Copper Alloy Steel
    ASME 150 B16.47 Series A Supersedes MSS-SP44 984.3mm 914.4mm 28 35mm 74.7mm
    ASME 300 B16.47 Series A Supersedes MSS-SP44 1092.3mm 996.9mm 28 47.7mm 92mm WN
    95.3mm BL
    ASME Class 600 B16.5 B16.47 Series A Supersedes MSS-SP44 1130.4mm 1022.3mm 28 53.8mm 114.4mm WN
    139.8mm BL
    ASME Class 900 B16.5 B16.47 Series A Supersedes MSS-SP44 1232mm 1085.8mm 20 79.2mm 149.4mm WN
    184.4mm BL
    ASME 150 B16.47 Series B Supersedes API-605 887.5mm 846mm 44 22.3mm 44.5mm WN
    50.9mm BL
    ASME 300 B16.47 Series B Supersedes API-605 990.7mm 920.7mm 36 38.1mm 93.8mm
    ASME Class 600 B16.5 B16.47 Series B Supersedes MSS-SP44 1022.4mm 927.1mm 28 50.8mm 125.5mm WN
    127.11 BL
    ASME Class 900 B16.5 B16.47 Series B Supersedes MSS-SP44 1181.2mm 1035mm 20 79.2mm 155mm
    ISO7005-1/AS4331.1/.2⑤ PN20 (ANSI 150) 985mm 914mm 28 M33 35.5mm 74.5mm
    ISO7005-1/AS4331.1/.2⑤ PN50 (ANSI 300) 1090mm 997mm 28 M45 48mm 92mm
    ISO7005-1/AS4331.1/.2⑤ PN110 (ANSI 600) 1130mm 1022mm 28 M52 55mm 114mm
    ISO7005-1/AS4331.1/.2⑤ PN150 (ANSI 900) 1230mm 1086mm 20 M76 80mm 149mm
    ISO7005-1/AS4331.1/.2⑤ PN250 (ANSI 1500)
    ISO7005-1/AS4331.1/.2⑤ PN420 (ANSI 2500)
    AS2129① Table D 995mm 927mm 20 M30 33mm 47mm
    AS2129① Table E 995mm 927mm 20 M33 36mm 60mm
    BS3293 Class 150 984.3mm 914.4mm 28 34.9mm 54mm
    BS3293 Class 300 1092mm 997mm 28 48mm 92mm
    BS3293 Class 600 1130mm 1022mm 28 54mm 1130mm
    BS10 Table D 995mm 927mm 20 M30
    BS10 Table F 1015mm 940mm 28 M33

    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.

    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

    WN= Weld Neck
    BL= Blind

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