AS4087-Flange-Dimension-and-Weight

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AUSTRALIAN STANDARD

AS2129 originates from BS10 and has been metricated. In some cases slightly larger bolt holes provide better clearance as metric bolts are specified in lieu of UNC bolts used by BS10. AS4087 is an update of AS2129, however AS2129 is still widely used so it has not been deleted as a standard, however, it now only covers AS table D to H.

AS4087 is the latest standard for BS table D to H, the same drilling is used but the new PN pressure rating system has been adopted. As the new pressure ratings are slightly higher the flange thicknesses have slightly increased. Also the raised face dimensions (although rarely specified, flat face is mostly used) are slightly larger. Table C, J to R, no longer exist, PN16 is the same drilling as Table D, PN21 is the same as Table E, PN35 is the same as Table H.

AS4331 covers PN2.5 to PN420 and the sizing and drilling used is a replication of ISO 7005-1 which in turn is a metricated equivalent of ASME B16.5 class 150 to 2500. ISO 7005-1 also incorporates the superceded DIN 2533 & DIN 2501 flanges which AS4331 also incorporates (also mirrored in EN1092).

AS/NZS 4331 is identical with and has been reproduced from ISO 7005.
4331.1 – Steel Flanges (ISO 7005-1) EN1092-2 (DIN 2501/BS4504 based) PN2.5 / 6 / 10 / 16 / 25 / 40 and ANSI 150~2500LB ISO equivalent PN 20 / 50 / 110 / 150 / 260 / 420
4331.2 – Cast Iron Flanges (ISO 7005-2) PN2.5 / 6 / 10 / 19 / 20 / 25 / 40 / 50
4331.3 – Copper Alloy and composite flanges (ISO 7005-3) PN10 to N50

Although the standards say they are identical, I notice some very minor flange thickness differences between ISO 7005 (AS4331) and EN1092. Refer the Global Supply Line online slide rule above for differences.

AS 4331 is a reproduction of ISO 7005 which is based on the American and European flange systems. PN20, PN50, PN110, PN150, PN260 and PN420 Steel flanges are “designed to be interchangeable” with flanges to American standards ANSI/ASME B16.5 and MSS SP44. They are not identical but are “deemed to comply” with dimensions specified in ANSI/ASME B16.5 and MSS SP44 as appropriate.

STEEL BACKING FLANGES AS 4087 - Figure B8 PN16

Nominal Pipe ODFlange SizeODIDMinimum ThicknessPCDBolt Hole No. x Dia.Bolt Size
635015078111144X18M16
756516592111274X18M16
9080185108111464X18M16
110100215128131784X18M16
160150280178132358X18M16
200200335235192928X18M16
225225370238193248X18M16
250250405288193568X22M20
3153004553382340612X22M20
3553505253763047012X26M24
n/a375550n/a3049512X26M24
4004005804303052112X26M24
4504506404703058412X26M24
5005007055333864116X26M24
6306008256454875616X30M27
7107009107405684520X30M27
n/a750995n/a5692720X33M30
80080010608435698420X36M33
900900117594766109224X36M33
100010001255105066117524X36M33

STEEL BACKING FLANGES AS 4087 - Figure B8 PN21

Nominal Pipe ODFlange SizeODIDMinimum ThicknessPCDBolt Hole No. x Dia.Bolt Size
635016578151274X18M16
756518592151468X18M16
9080205108151658X18M16
110100230128191918X18M16
1601503051782426012X22M20
2002003702352432412X22M20
2252254052383035612X26M24
2502504302883038112X26M24
3153004903383043816X26M24
3553505503763049516X30M27
n/a375580n/a3852116X30M27
4004006104303855220X30M27
4504506754703861020X33M30
5005007355334867324X33M30
6306008506455878124X36M33
7107009357405885724X36M33
n/a7501015n/a5894028X36M33
80080010608436898428X36M33
900900118594768110532X39M36
100010001275105078119436X39M36

AS FLANGE STANDARD

 

AS FLANGE STANDARDDimensions of AS 4087 standard flanges
AS 2129 Flange Dimensions of Table A
AS 2129 Flange Dimensions of Table D
AS 2129 Flange Dimensions of Table E
AS 2129 Flange Dimensions of Table F
AS 2129 Flange Dimensions of Table H
AS 2129 Flange Dimensions of Table J
AS 2129 Flange Dimensions of Table K
AS 2129 Flange Dimensions of Table R
AS 2129 Flange Dimensions of Table S
AS 2129 Flange Dimensions of Table T

All the flange list

ANSI/ASME FLANGE STANDARDEN FLANGE STANDARDBS FLANGE STANDARD
DIN FLANGE STANDARDJIS FLANGE STANDARDUNI FLANGE STANDARD
API 6A/6B/6BX FLANGE STANDARDAWWA FLANGE STANDARDKS FLANGE STANDARD
GOST/ГОСТ FLANGE STANDARDISO FLANGE STANDARDAS FLANGE STANDARD
SANS/SABS FLANGE STANDARDLONG WELD NECK FLANGEASME VIII FLANGE

 

All dimensions are in "mm" and All weights are in "kg" unless noted otherwise specified.

you may also check non standard sizes flange weight online calculation,flange surface area online calculation,flange surface volume online calculation from our pipeline tool link: 

https://alloypipefitting.com/flange-calculator.html

The whole weight and dimension list of  flange directory

Flange-dimension-and-weight