BS EN 1759-4-2003 Flanges and their joints - Circular flanges for pipes valves fittings and accessories class designated - Aluminium alloy flanges《法兰及其连接件 标注等级的管道、阀门、配件及附件用圆形法兰 铝合金.pdf

1、BRITISH STANDARD BS EN 1759-4:2003 Flanges and their joint Circular flanges for pipes, valves, fittings and accessories, class designated Part 4: Aluminium alloy flanges The European Standard EN 1759-4:2003 has the status of a British Standard ICS 23.040.60 BS EN 1759-4:2003 This British Standard, w

2、as published under the authority of the Standards Policy and Strategy Committee on 1 October 2003 BSI 1 October 2003 ISBN 0 580 42684 X National foreword This British Standard is the official English language version of EN 1759-4:2003. The UK participation in its preparation was entrusted to Technic

3、al 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-references The British Standards which implement international or European publications referred to in this document may be found in

4、 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. This publication does not purport to include all the necessary provisions of a contract. Users are responsib

5、le 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 international/European committee any enquiries on the interpretation, or proposals for change, and keep the U

6、K interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 16, an inside back cover and a back cover. The BSI copyright notice displayed in t

7、his document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN17594 September2003 ICS23.040.60 Englishversion FlangesandtheirjointCircularflangesforpipes,valves, fittingsandaccessories,classdesigna

8、tedPart4:Aluminium alloyflanges BridesetleursassemblagesBridescirculairespourtubes, appareilsderobinetterie,raccordsetaccessoires, dsignesClassPartie4:Bridesenalliagesdaluminium FlanscheundihreVerbindungenRundeFlanschefr Rohre,Armaturen,FormstckeundZubehrteile,nach ClassbezeichnetTeil4:Flanscheaus A

9、luminiumlegierungen ThisEuropeanStandardwasapprovedbyCENon10July2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnati

10、onal standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusast

11、he official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMI

12、TEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN17594:2003EEN17594:2003(E) 2 Contents Page Foreword3 1 Scope 4 2 Normativereferences 4 3 Termsandd

13、efinitions. .4 4 Designations.5 4.1 Rangeofnominalsizes .5 4.2 RangeofClassdesignations. .5 4.3 Typesofflanges .5 4.4 Designationofflanges 5 5 Generalrequirements 6 5.1 Flangematerials .6 5.2 Repairs6 5.3 Bolting.6 5.4 Gaskets .6 5.5 Pressure/temperature(p/T)ratings 6 5.6 Dimensions.6 5.7 Flangefaci

14、ngs 7 5.7.1 Typesofjointingfaces . .7 5.7.2 Jointingfacefinish 7 5.8 Spotfacingandbackfacingofflanges .7 5.9 Tolerances 7 5.10 Marking .7 AnnexA (informative) Massesofflanges . 14 AnnexB (informative) Comparisonofmetricboltingtoimperialbolting15 AnnexZA (informative) RelationshipbetweenthisEuropeanS

15、tandardandtheEssentialRequirements ofEUDirective97/23/EC . 16EN17594:2003(E) 3 Foreword Thisdocument(EN17594:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC74“Flangesandtheirjoints“ thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofani

16、denticaltextor byendorsement,atthelatestbyMarch2004,andconflictingnationalstandardsshallbewithdrawnatthelatestby March2004. ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandtheEuropean FreeTradeAssociation,andsupportsessentialrequirementsofthePressureEquipmentDirective(PED

17、) 1) . ForrelationshipwithEUDirective(s),seeinformativeannexZA,whichisanintegralpartofthisstandard. EN1759consistsofthefollowingparts: Part1:Steelflanges(draftstage); Part3:Copperalloyflanges(draftstage); Part4:Aluminiumalloyflanges Thematingdimensionsoftheflangesofthisstandardarecompatiblewiththose

18、flangesofothermaterialsinac cordancewiththeotherpartsofEN 1759andwiththoseflangesofISO7005. AnnexesAandBareinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcoun triesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,

19、Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom. 1) Directive97/23ECoftheEuropeanParliamentandoftheCouncilof29May1997ontheapproximationoftheLawsofthe MemberStatesconcerningpressureequipmen

20、t;OIECL181.EN17594:2003(E) 4 1Scope ThisEuropeanstandardspecifiesrequirementsforClassdesignatedcircularflangesforpipes,valves,fittingsand accessoriesmadefromaluminiumalloyintherangeofDN15toDN600(NPS1/2toNPS24)andClass150to Class300(seeTable1). Thisstandardspecifiesthetypesofflangesandtheirfacings,di

21、mensionsandtolerances,boltsizes,surfacefinish ofjointingfaces,markingandmaterialstogetherwithassociatedpressuretemperature(p/T)ratings. Theflangesareintendedtobeusedforpipingaswellasforpressurevessels. 2 Normativereferences ThisEuropeanStandardincorporates,bydatedorundatedreferenceprovisionsfromothe

22、rpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.Fordated references,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropeanStandardonly whenincorporatedinitbyamendmentorrevision.Forundatedreferences,thelatestedit

23、ionofthepublicationreferred toapplies(includingamendments). EN15151, FlangesandtheirjointsBoltingPart1:Selectionofbolting. EN12392, AluminiumandaluminiumalloysWroughtproductsSpecialrequirementsforproductsintendedfor theproductionofpressureequipment. EN12560, FlangesandtheirjointsGasketsforClassdesig

24、natedflanges(indifferentparts) ENISO4287:1998, Geometricalproductspecification(GPS)Surfacetexture:ProfilemethodTerms,defini tionsandsurfacetextureparameters(ISO4287:1997). ENISO6708:1995, PipeworkComponentsDefinitionandselectionofDN(nominalsize)(ISO6708:1995). 3 Termsanddefinitions Forthepurposesoft

25、hisEuropeanStandardthefollowingtermsanddefinitionsapply: 3.1 DN seeENISO6708:1995 3.2 NPS (Nominalpipesize) Analphanumericdesignationofsizeforcomponentsofapipeworksystem,whichisusedforreferencepurposes.It comprises,forthepurposeofClassdesignatedflangesaccordingtothisstandard,thelettersNPSfollowedbya

26、 dimensionlessnumberwhichisindirectlyrelatedtothephysicalsizeoftheboreoroutsidediameteroftheend connections. NOTE1 ThenumberfollowingthelettersNPSdoesnotrepresentameasurablevalueandshouldnotbeusedforcalculation purposesexceptwherespecifiedintherelevantstandard. NOTE2 TherelationshipbetweenDNandNPSis

27、giveninthetables. 3.3 Class Analphanumericdesignationusedforreferencepurposesrelatedtoacombinationofmechanicalanddimensional characteristicsofacomponentofapipeworksystem.ItcomprisesthewordClassfollowedbyadimensionless wholenumber.EN17594:2003(E) 5 NOTE1 ThenumberfollowingthewordClassdoesnotrepresent

28、ameasurablevalueandshouldnotbeusedforcalculation purposesexceptwherespecifiedintherelevantstandard. NOTE2 ThedesignationClassisnotmeaningfulunlessitisrelatedtotherelevantcomponentstandardnumber. NOTE3 ItisintendedthatallcomponentswiththesameClassandNPSdesignationsshallhavethesamematingdimen sionsfor

29、compatibleflangetypes. 3.4 Ra,R z seeENISO4287:1998 3.5 Maximumallowablepressure,PS PSmeansthemaximumpressureforwhichtheequipmentisdesigned,asspecifiedbytheequipmentmanufac turer. 3.6 Maximumallowabletemperature,TS TSmeansthemaximumtemperatureforwhichtheequipmentisdesigned,asspecifiedbytheequipmentm

30、anu facturer. 4Designations 4.1Rangeofnominalsizes TherangeofDN(NPS)applicabletoeachClassshallbeasgiveninTable1. 4.2RangeofClassdesignations TherangeofClassdesignationsshallbeasgiveninTable1. 4.3Typesofflanges Figure1illustratesflangesidentifiedaccordingtotype: a) Type05Blankflange; b) Type11Weldnec

31、kflange. 4.4Designationofflanges Thedesignationoftheflangesshallcontainthefollowinginformation: 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

32、); g) Class(e.g.Class150);EN17594:2003(E) 6 h) Material(e.g.ENAW5083O). EXAMPLE1 Foratype11flange: FlangeEN1759411CDN300324x5Class150ENAW5083O EXAMPLE2 Foratype05flange: FlangeEN1759405CDN300Class150ENAW5083O 5 Generalrequirements 5.1Flangematerials FlangesshallbemanufacturedfromthematerialgradesEN

33、AW5083 (AlMg4,5Mn0,7) OorEN AW6061 (AlMg1SiCu)T6accordingtoEN12392.Othermaterialsmaybeused.Forthep/Tratingssee5.5. Weldneckflangesshallbeforgedormadefromextrudedbars;blankflangesshallbeforgedormadefromplate. 5.2Repairs Repairweldingoftheflangesisnotpermitted. 5.3Bolting 5.3.1 Theboltingshallbechosen

34、accordingtothepressure,temperatureandgasket. 5.3.2 Boltingmaterialsshallbeselectedaccordingtothefollowingcriteria: a) ForallserviceconditionsinaccordancewithEN15151(bolt/nut):5.6/5,8.8/8,25Ni15CrTi/25Ni15CrTi, A470/A470,A270/A270,18Cr9NiMoAT+C/18Cr9NiMo,18Cr9NiAT+C/18Cr9Ni; b) forlesssevereserviceco

35、nditionse.g.waterserviceorincaseofoversizedflangedjoints,inaccordancewith EN15151(bolt/nut):A450/A450,A250/A250,18Cr9NiMo/18Cr9NiMo,18Cr9Ni/18Cr9Ni; NOTE Thechoiceofthisboltingshouldbebasedoneitherspecialexperienceoronrecalculations. c) whereboltingotherthanspecifiedinEN15151isrequiredthisshallbecho

36、senaccordingtotheparameters abovesothattheflangedjointremainstightundertheexpectedoperatingconditions. 5.3.3 Theuseofwashersisrecommended. 5.4Gaskets GasketsshallbeselectedfromtherelevantpartofEN12560. NOTE Ifspiralwoundgasketsareselected,thentheyshouldbelowstressdesign(y=5000,m=3forcalculationinac

37、cordancewithASMECode). 5.5Pressure/temperature(p/T)ratings Thepressuretemperatureratings(p/Tratings)forthematerialgradesin5.1aregiveninTable7. 5.6Dimensions 5.6.1 Dimensionsofflangesshallbeinaccordancewiththefollowingfiguresandtables:EN17594:2003(E) 7 Class150flanges:Figure3andTable4; Class300flange

38、s:Figure4andTable5. NOTE1 ApproximatemassesofflangesaregiveninannexA. NOTE2 Figures3and4areidentical.Theyarerepeatedforbetterhandlingofthestandard. 5.6.2 Boltholesshallbeequallyspacedonthepitchcirclediameter. 5.6.3 Ifneckthickness Sisorderedsmallerthangivenintables4and5,theinsidediameteratthenecksha

39、llbe taperedatanangleof14to18.If Sisorderedgreater,theborediametershallbe AS 2 . 5.6.4 ForflangesmadeofENAW6061(AlMg1SiCu)T6theneckthicknessSshallbesufficienttotakeaccount oflowerstrengthpropertiesduetowelding. 5.7Flangefacings 5.7.1 Typesofjointingfaces ForthetypesofjointingfacesseeFigure2,forthedi

40、mensionsofjointingfacesseeTable2. 5.7.2 Jointingfacefinish Alljointingfacesshallbemachinefinishedand,whencomparedbyvisualortactilemeanswithreferencespeci mens,shallbeinaccordancewithTable3. NOTE1 Itisnotintendedthatinstrumentmeasurementsaretakenonthejointingfaces. NOTE2 Otherfinishesmaybeagreedbetwe

41、enthemanufacturerandpurchaser. ForjointingfacetypeB1,turningshallbecarriedoutwitharoundnosedtoolinaccordancewithTable3. 5.8Spotfacingandbackfacingofflanges Anyspotfacingandbackfacingrequiredshallnotreducetheflangethicknesstolessthanthethicknessspecified. Whenspotfacingisused,thediametershallbelargee

42、noughtoaccommodatetheoutsidediameteroftheequiva lentnormalseriesofwashersfortheboltsizebeingfitted.Whenaflangeisbackfaced,itispermissibleforthefillet radiustobereducedbutitshallnotbeeliminatedentirely. 5.9Tolerances TolerancesondimensionsareasspecifiedinTable6. 5.10Marking Allflangesshallbemarkedasf

43、ollows: 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) Materialdesignation(e.g.ENAW5083O); g)Batchnumberorsuitablequalitycontrolnumbertraceabletothebatchnumberwhentestcertificationisre quired(e.g.yyy).EN17594:2003(E) 8 EXAMPLE xxx