1、BRITISH STANDARDBS EN 1759-4:2003Flanges and their joint Circular flanges for pipes,valves,fittings and accessories,class designated Part 4:Aluminium alloy flangesThe European Standard EN 1759-4:2003 has the status of a British StandardICS 23.040.60Licensed Copy:Institute Of Technology Tallaght,Inst
2、itute of Technology,Mon Apr 02 10:17:18 GMT+00:00 2007,Uncontrolled Copy,(c)BSIBS EN 1759-4:2003This British Standard,was published under the authority of the Standards Policy and Strategy Committee on 1 October 2003 BSI 1 October 2003ISBN 0 580 42684 XNational forewordThis British Standard is the o
3、fficial English language version of EN 1759-4:2003.The UK participation in its preparation was entrusted to Technical Committee PSE/15,Flanges,which has the responsibility to:A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British
4、 Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled“International Standards Correspondence Index”,or by using the“Search”facility of the BSI Electronic Catalogue or of British Standards Online.Thi
5、s publication does not purport to include all the necessary provisions of a contract.Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.aid enquirers to understand the text;present to the responsible internat
6、ional/European committee any enquiries on the interpretation,or proposals for change,and keep the UK interests informed;monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover,an inside front cover,the EN title page,
7、pages 2 to 16,an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd.No.Date CommentsLicensed Copy:Institute Of Technology Tallaght,Institute of Technology,Mon Apr 02 10:17:18 GMT+00
8、:00 2007,Uncontrolled Copy,(c)BSIEUROPEANSTANDARDNORMEEUROPENNEEUROPISCHENORMEN17594September2003ICS23.040.60EnglishversionFlangesandtheirjointCircularflangesforpipes,valves,fittingsandaccessories,classdesignatedPart4:AluminiumalloyflangesBridesetleursassemblagesBridescirculairespourtubes,appareilsd
9、erobinetterie,raccordsetaccessoires,dsignesClassPartie4:BridesenalliagesdaluminiumFlanscheundihreVerbindungenRundeFlanschefrRohre,Armaturen,FormstckeundZubehrteile,nachClassbezeichnetTeil4:FlanscheausAluminiumlegierungenThisEuropeanStandardwasapprovedbyCENon10July2003.CENmembersareboundtocomplywitht
10、heCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope anStandardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnationalstandardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember.ThisEuropeanStandardexist
11、sinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe officialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finlan
12、d,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn itedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITEUROPENDENORMALISATIONEUROPISCHESKOMITEEFRNORMUNGManagementCentre:ruedeStassart,36B1050Brussels2003CEN Allrigh
13、tsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN17594:2003ELicensed Copy:Institute Of Technology Tallaght,Institute of Technology,Mon Apr 02 10:17:18 GMT+00:00 2007,Uncontrolled Copy,(c)BSIEN17594:2003(E)2Contents PageForeword.31 Scope.42 Normativereferences.43
14、Termsanddefinitions.44 Designations.54.1 Rangeofnominalsizes.54.2 RangeofClassdesignations.54.3 Typesofflanges.54.4 Designationofflanges.55 Generalrequirements.65.1 Flangematerials.65.2 Repairs.65.3 Bolting.65.4 Gaskets.65.5 Pressure/temperature(p/T)ratings.65.6 Dimensions.65.7 Flangefacings.75.7.1
15、Typesofjointingfaces.75.7.2 Jointingfacefinish.75.8 Spotfacingandbackfacingofflanges.75.9 Tolerances.75.10 Marking.7AnnexA(informative)Massesofflanges.14AnnexB(informative)Comparisonofmetricboltingtoimperialbolting.15AnnexZA(informative)RelationshipbetweenthisEuropeanStandardandtheEssentialRequireme
16、ntsofEUDirective97/23/EC.16Licensed Copy:Institute Of Technology Tallaght,Institute of Technology,Mon Apr 02 10:17:18 GMT+00:00 2007,Uncontrolled Copy,(c)BSIEN17594:2003(E)3ForewordThisdocument(EN17594:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC74Flangesandtheirjointsthesecretariatofwhichisheldby
17、DIN.ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextorbyendorsement,atthelatestbyMarch2004,andconflictingnationalstandardsshallbewithdrawnatthelatestbyMarch2004.ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandtheEuropeanFre
18、eTradeAssociation,andsupportsessentialrequirementsofthePressureEquipmentDirective(PED)1).ForrelationshipwithEUDirective(s),seeinformativeannexZA,whichisanintegralpartofthisstandard.EN1759consistsofthefollowingparts:Part1:Steelflanges(draftstage);Part3:Copperalloyflanges(draftstage);Part4:Aluminiumal
19、loyflangesThematingdimensionsoftheflangesofthisstandardarecompatiblewiththoseflangesofothermaterialsinaccordancewiththeotherpartsofEN 1759andwiththoseflangesofISO7005.AnnexesAandBareinformative.AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcountriesarebo
20、undtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.1)Directive97/23ECoftheEuropeanParliamentandoftheCouncilof29May1997on
21、theapproximationoftheLawsoftheMemberStatesconcerningpressureequipment;OIECL181.Licensed Copy:Institute Of Technology Tallaght,Institute of Technology,Mon Apr 02 10:17:18 GMT+00:00 2007,Uncontrolled Copy,(c)BSIEN17594:2003(E)41ScopeThisEuropeanstandardspecifiesrequirementsforClassdesignatedcircularfl
22、angesforpipes,valves,fittingsandaccessoriesmadefromaluminiumalloyintherangeofDN15toDN600(NPS1/2toNPS24)andClass150toClass300(seeTable1).Thisstandardspecifiesthetypesofflangesandtheirfacings,dimensionsandtolerances,boltsizes,surfacefinishofjointingfaces,markingandmaterialstogetherwithassociatedpressu
23、retemperature(p/T)ratings.Theflangesareintendedtobeusedforpipingaswellasforpressurevessels.2 NormativereferencesThisEuropeanStandardincorporates,bydatedorundatedreferenceprovisionsfromotherpublications.Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafte
24、r.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferences,thelatesteditionofthepublicationreferredtoapplies(includingamendments).EN15151,FlangesandtheirjointsBoltingPart1:Selectionofbolt
25、ing.EN12392,AluminiumandaluminiumalloysWroughtproductsSpecialrequirementsforproductsintendedfortheproductionofpressureequipment.EN12560,FlangesandtheirjointsGasketsforClassdesignatedflanges(indifferentparts)ENISO4287:1998,Geometricalproductspecification(GPS)Surfacetexture:ProfilemethodTerms,definiti
26、onsandsurfacetextureparameters(ISO4287:1997).ENISO6708:1995,PipeworkComponentsDefinitionandselectionofDN(nominalsize)(ISO6708:1995).3 TermsanddefinitionsForthepurposesofthisEuropeanStandardthefollowingtermsanddefinitionsapply:3.1DNseeENISO6708:19953.2NPS(Nominalpipesize)Analphanumericdesignationofsi
27、zeforcomponentsofapipeworksystem,whichisusedforreferencepurposes.Itcomprises,forthepurposeofClassdesignatedflangesaccordingtothisstandard,thelettersNPSfollowedbyadimensionlessnumberwhichisindirectlyrelatedtothephysicalsizeoftheboreoroutsidediameteroftheendconnections.NOTE1 Thenumberfollowingthelette
28、rsNPSdoesnotrepresentameasurablevalueandshouldnotbeusedforcalculationpurposesexceptwherespecifiedintherelevantstandard.NOTE2 TherelationshipbetweenDNandNPSisgiveninthetables.3.3ClassAnalphanumericdesignationusedforreferencepurposesrelatedtoacombinationofmechanicalanddimensionalcharacteristicsofacomp
29、onentofapipeworksystem.ItcomprisesthewordClassfollowedbyadimensionlesswholenumber.Licensed Copy:Institute Of Technology Tallaght,Institute of Technology,Mon Apr 02 10:17:18 GMT+00:00 2007,Uncontrolled Copy,(c)BSIEN17594:2003(E)5NOTE1 ThenumberfollowingthewordClassdoesnotrepresentameasurablevalueands
30、houldnotbeusedforcalculationpurposesexceptwherespecifiedintherelevantstandard.NOTE2 ThedesignationClassisnotmeaningfulunlessitisrelatedtotherelevantcomponentstandardnumber.NOTE3 ItisintendedthatallcomponentswiththesameClassandNPSdesignationsshallhavethesamematingdimensionsforcompatibleflangetypes.3.
31、4Ra,R zseeENISO4287:19983.5Maximumallowablepressure,PSPSmeansthemaximumpressureforwhichtheequipmentisdesigned,asspecifiedbytheequipmentmanufacturer.3.6Maximumallowabletemperature,TSTSmeansthemaximumtemperatureforwhichtheequipmentisdesigned,asspecifiedbytheequipmentmanufacturer.4Designations4.1Rangeo
32、fnominalsizesTherangeofDN(NPS)applicabletoeachClassshallbeasgiveninTable1.4.2RangeofClassdesignationsTherangeofClassdesignationsshallbeasgiveninTable1.4.3TypesofflangesFigure1illustratesflangesidentifiedaccordingtotype:a)Type05Blankflange;b)Type11Weldneckflange.4.4DesignationofflangesThedesignationo
33、ftheflangesshallcontainthefollowinginformation:a)Description(Flange);b)Numberofthisstandard(EN17594);c)Flangetype(11,05resp.);d)Flangefacingtype(e.g.C);e)DNorNPS(e.g.DN300);f)Fortype11flangesonly,neckdiameter,Aandneckthickness,S(e.g.324x5);g)Class(e.g.Class150);Licensed Copy:Institute Of Technology
34、Tallaght,Institute of Technology,Mon Apr 02 10:17:18 GMT+00:00 2007,Uncontrolled Copy,(c)BSIEN17594:2003(E)6h)Material(e.g.ENAW5083O).EXAMPLE1 Foratype11flange:FlangeEN1759411CDN300324x5Class150ENAW5083OEXAMPLE2 Foratype05flange:FlangeEN1759405CDN300Class150ENAW5083O5 Generalrequirements5.1Flangemat
35、erialsFlangesshallbemanufacturedfromthematerialgradesEN AW5083(AlMg4,5Mn0,7)OorEN AW6061(AlMg1SiCu)T6accordingtoEN12392.Othermaterialsmaybeused.Forthep/Tratingssee5.5.Weldneckflangesshallbeforgedormadefromextrudedbars;blankflangesshallbeforgedormadefromplate.5.2RepairsRepairweldingoftheflangesisnotp
36、ermitted.5.3Bolting5.3.1 Theboltingshallbechosenaccordingtothepressure,temperatureandgasket.5.3.2 Boltingmaterialsshallbeselectedaccordingtothefollowingcriteria:a)ForallserviceconditionsinaccordancewithEN15151(bolt/nut):5.6/5,8.8/8,25Ni15CrTi/25Ni15CrTi,A470/A470,A270/A270,18Cr9NiMoAT+C/18Cr9NiMo,18
37、Cr9NiAT+C/18Cr9Ni;b)forlesssevereserviceconditionse.g.waterserviceorincaseofoversizedflangedjoints,inaccordancewithEN15151(bolt/nut):A450/A450,A250/A250,18Cr9NiMo/18Cr9NiMo,18Cr9Ni/18Cr9Ni;NOTE Thechoiceofthisboltingshouldbebasedoneitherspecialexperienceoronrecalculations.c)whereboltingotherthanspec
38、ifiedinEN15151isrequiredthisshallbechosenaccordingtotheparametersabovesothattheflangedjointremainstightundertheexpectedoperatingconditions.5.3.3 Theuseofwashersisrecommended.5.4GasketsGasketsshallbeselectedfromtherelevantpartofEN12560.NOTE Ifspiralwoundgasketsareselected,thentheyshouldbelowstressdes
39、ign(y=5000,m=3forcalculationinaccordancewithASMECode).5.5Pressure/temperature(p/T)ratingsThepressuretemperatureratings(p/Tratings)forthematerialgradesin5.1aregiveninTable7.5.6Dimensions5.6.1 Dimensionsofflangesshallbeinaccordancewiththefollowingfiguresandtables:Licensed Copy:Institute Of Technology
40、Tallaght,Institute of Technology,Mon Apr 02 10:17:18 GMT+00:00 2007,Uncontrolled Copy,(c)BSIEN17594:2003(E)7 Class150flanges:Figure3andTable4;Class300flanges:Figure4andTable5.NOTE1 ApproximatemassesofflangesaregiveninannexA.NOTE2 Figures3and4areidentical.Theyarerepeatedforbetterhandlingofthestandard
41、.5.6.2 Boltholesshallbeequallyspacedonthepitchcirclediameter.5.6.3 Ifneckthickness Sisorderedsmallerthangivenintables4and5,theinsidediameterattheneckshallbetaperedatanangleof14to18.If Sisorderedgreater,theborediametershallbe AS 2.5.6.4 ForflangesmadeofENAW6061(AlMg1SiCu)T6theneckthicknessSshallbesuf
42、ficienttotakeaccountoflowerstrengthpropertiesduetowelding.5.7Flangefacings5.7.1 TypesofjointingfacesForthetypesofjointingfacesseeFigure2,forthedimensionsofjointingfacesseeTable2.5.7.2 JointingfacefinishAlljointingfacesshallbemachinefinishedand,whencomparedbyvisualortactilemeanswithreferencespecimens
43、,shallbeinaccordancewithTable3.NOTE1 Itisnotintendedthatinstrumentmeasurementsaretakenonthejointingfaces.NOTE2 Otherfinishesmaybeagreedbetweenthemanufacturerandpurchaser.ForjointingfacetypeB1,turningshallbecarriedoutwitharoundnosedtoolinaccordancewithTable3.5.8SpotfacingandbackfacingofflangesAnyspot
44、facingandbackfacingrequiredshallnotreducetheflangethicknesstolessthanthethicknessspecified.Whenspotfacingisused,thediametershallbelargeenoughtoaccommodatetheoutsidediameteroftheequivalentnormalseriesofwashersfortheboltsizebeingfitted.Whenaflangeisbackfaced,itispermissibleforthefilletradiustobereduce
45、dbutitshallnotbeeliminatedentirely.5.9TolerancesTolerancesondimensionsareasspecifiedinTable6.5.10MarkingAllflangesshallbemarkedasfollows:a)Flangemanufacturersnameortrademark(e.g.xxx);b)Numberofthisstandard(EN17594);c)DNorNPS(e.g.DN300);d)Class(e.g.Class150);e)Neckthicknessifnotstandard(e.g.7,1);f)Ma
46、terialdesignation(e.g.ENAW5083O);g)Batchnumberorsuitablequalitycontrolnumbertraceabletothebatchnumberwhentestcertificationisrequired(e.g.yyy).Licensed Copy:Institute Of Technology Tallaght,Institute of Technology,Mon Apr 02 10:17:18 GMT+00:00 2007,Uncontrolled Copy,(c)BSIEN17594:2003(E)8EXAMPLE xxxE
47、N17594DN300Class1507,1ENAW5083OyyyTheflangesshallbeclearlyandpermanentlymarkedaroundtherim.Table1SynoptictableType ClassDNandNPS15 25 40 50 80 100 150 200 250 300 350 400 450 500 6001/2 1 11/2 2 3 4 6 8 10 12 14 16 18 20 241 5 0 xxxxxxxxxxxxxxx05,11300axxxxxxxxxxxxxxxA Pressuretemperature(p/T)rating
48、sformaterialENAW5083OarevalidonlyfornominalsizeslessandequaltoDN300(NPS12).Type05BlankflangeType11WeldingneckflangeFigure1TypesofflangesTypeBRaisedfaceTypeCTonguefaceTypeDGroovefaceNOTE FortypesBandD,thetransitionfromtheedgeoftheraisedface(d1)totheflangefaceiseitherbyradiusorchamfer.Figure2Flangefac
49、ingsLicensed Copy:Institute Of Technology Tallaght,Institute of Technology,Mon Apr 02 10:17:18 GMT+00:00 2007,Uncontrolled Copy,(c)BSIEN17594:2003(E)9Table2FlangefacingdimensionsDimensionsinmillimetresDN NPS d1 d2 f1 f2 f3 w x y zCl150 Cl300 Cl150 Cl300 Cl150 Cl30015 1/2 34,9 44,5 46,0 1,6 6,4 4,8 2
50、5,4 35,1 35,1 36,6 36,6 23,820 3/4 42,9 52,3 54,0 1,6 6,4 4,8 33,3 42,9 42,9 44,4 44,4 31,725 1 50,8 57,1 61,9 1,6 6,4 4,8 38,1 47,8 50,8 49,3 52,3 36,540 11/2 73,0 73,1 84,1 1,6 6,4 4,8 54,0 63,5 73,2 65,0 74,7 52,450 2 92,1 91,9 103,2 1,6 6,4 4,8 73,0 82,5 91,9 84,1 93,7 71,480 3 127,0 127,0 138,1
