1、BRITISH STANDARD BS EN 1092-4:2002 Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 4: Aluminium alloy flanges The European Standard EN 1092-4:2002 has the status of a British Standard ICS 23.040.60 BS EN 1092-4:2002 This British Standard, hav
2、ing been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 23 July 2002 BSI 23 July 2002 ISBN 0 580 40132 4 National foreword This British Standard is the official English language
3、 version of EN 1092-4:2002. 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-references The British Standards which i
4、mplement 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. This publication
5、 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 international/Eur
6、opean 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 pages This document comprises a front cover, an inside front cover, the EN title page, p
7、ages 2 to 18, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN10924 May2002 ICS23.040.60 Englishversion Fla
8、ngesandtheirjointsCircularflangesforpipes,valves, fittingsandaccessories,PNdesignatedPart4:Aluminium alloyflanges BridesetleursassemblagesBridescirculairespour tubes,appareilsderobinetterie,raccordsetaccessoires, dsignesPNPartie4:Bridesenalliagesdaluminium FlanscheundihreVerbindungenRundeFlanschefr
9、Rohre,Armaturen,FormstckeundZubehrteile,nachPN bezeichnetTeil4:FlanscheausAluminiumlegierungen ThisEuropeanStandardwasapprovedbyCENon28March2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwitho
10、utanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCE
11、NmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,Switzerlanda
12、ndUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN10924:2002EEN10924:2002(E) 2 Contents pag
13、e Foreword 3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions 5 4 Designations 5 4.1 RangeofDN 5 4.2 RangeofPNdesignations 5 4.3 Typesofflanges 5 4.4 Designationofflanges 5 5 Generalrequirements 6 5.1 Flangematerials 6 5.2 Repairs 6 5.3 Bolting 6 5.4 Gaskets 6 5.5 Pressuretemperature(p/T)rati
14、ngs 6 5.6 Dimensions 6 5.7 Flangefacings 7 5.8 Spotfacingandbackfacingofflanges 7 5.9 Tolerances 7 5.10 Marking 7 Figure1Typesofflanges 8 Figure2Flangefacings 9 Figure3DimensionsofPN10flanges 10 Figure4DimensionsofPN16flanges 11 Figure5DimensionsofPN25flanges 12 Figure6DimensionsofPN40flanges 13 Fig
15、ure7DimensionsofPN63flanges 14 for 15 AnnexA (informative) Massesofflanges16 AnnexZA (informative) ClausesofthisEuropeanStandardaddressing essentialrequirements(ERs)orotherprovisionsofEUDirectives17 Table1Synoptictable 8 Table2Flangefacingdimensions 9 Table3Surfacefinishofflangejointingfaces 9 Table
16、4DimensionsofPN10flanges 10 Table5DimensionsofPN16flanges 11 Table6DimensionsofPN25flanges 12 Table7DimensionsofPN40flanges 13 Table8DimensionsofPN63flanges 14 Table9Tolerancesondimensions 15 Table10 p/Tratings 15 TableA.1Massesofflanges 16 TableZA.1CorrespondencebetweenthisEuropeanStandardandDirect
17、ive 97/23/EC 17EN10924:2002(E) 3 Foreword ThisdocumentEN10924:2002hasbeenpreparedbyTechnicalCommitteeCEN/TC74“Flanges andtheirjoints“,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofan identicaltextorbyendorsement,atthelatestbyNovem
18、ber2002,andconflictingnationalstandards shallbewithdrawnatthelatestbyNovember2002. ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionand theEuropeanFreeTradeAssociation,andsupportsessentialrequirementsofEUDirective(s). ForrelationshipwithEUDirective(s),seeinformativeannexZA,wh
19、ichisanintegralpartofthis document. EN1092consistsofthefollowingfourparts: Part1: Steelflanges; Part2: Castironflanges; Part3: Copperalloyflanges; Part4: Aluminiumalloyflanges. Thematingdimensionsoftheflangesofthisstandardarecompatiblewiththoseflangesofother materialsinaccordancewiththeotherpartsofE
20、N1092andwiththoseflangesofISO7005. AnnexAisinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthe followingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,
21、Malta, Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN10924:2002(E) 4 1 Scope ThisEuropeanStandardspecifiesrequirementsforPNdesignatedcircularflangesforpipes,valves, fittingsandaccessoriesmadefromaluminiumalloyintherangeofDN15toDN600andPN10to PN63(seeTable1). ThisEuropeanS
22、tandardspecifiesthetypesofflangesandtheirfacings,dimensionsandtolerances, boltsizes,surfacefinishofjointingfaces,markingandmaterialstogetherwithassociated pressure/temperature( p/T)ratings. Theflangesareintendedtobeusedforpipingaswellasforpressurevessels. 2 Normativereferences ThisEuropeanStandardin
23、corporatesbydatedorundatedreference,provisionsfromother publications.Thesenormativereferencesarecitedattheappropriateplacesinthetext,andthe publicationsarelistedhereafter.Fordatedreferences,subsequentamendmentstoorprovisionsof anyofthesepublicationsapplytothisEuropeanStandardonlywhenincorporatedinit
24、by amendmentorrevision.Forundatedreferencesthelatesteditionofthepublicationreferredto applies(includingamendments). EN764, PressureequipmentTerminologyandsymbolsPressure,temperature,volume. EN1333, PipeworkcomponentsDefinitionandselectionofPN. EN1514, FlangesandtheirjointsDimensionsofgasketsforPNdes
25、ignatedflanges. EN15151, FlangesandtheirjointsBoltingPart1:Selectionofbolting. EN12392, AluminiumandaluminiumalloysWroughtproductsSpecialrequirementsforproducts intendedfortheproductionofpressureequipment. ENISO887, Plainwashersformetricbolts,screwsandnutsforgeneralpurposesGeneralplan (ISO887:2000).
26、 ENISO4287, Geometricalproductspecifications(GPS)Surfacetexture:ProfilemethodTerms, definitionsandsurfacetextureparameters(ISO4287:1997). ENISO6708, PipeworkComponentsDefinitionandselectionofDN(nominalsize) (ISO6708:1995).EN10924:2002(E) 5 3 Termsanddefinitions ForthepurposesofthisEuropeanStandardth
27、efollowingtermsanddefinitionsapply. 3.1 DN seeENISO6708 3.2 PN seeEN1333 3.3 Ra,Rz seeENISO4287 3.4 maximumallowablepressure,PS PSmeansthemaximumpressureforwhichtheequipmentisdesigned,asspecifiedbythe equipmentmanufacturer (SeealsoEN764,whereitisdefinedasallowablepressure p S ). 3.5 maximumallowable
28、temperature,TS TSmeansthemaximumtemperatureforwhichtheequipmentisdesigned,asspecifiedbythe equipmentmanufacturer (SeealsoEN764,whereitisdefinedasallowabletemperature t S ). 4 Designations 4.1 RangeofDN TherangeofDNapplicabletoeachPNshallbeasgiveninTable1. 4.2 RangeofPNdesignations TherangeofPNdesign
29、ationsshallbeasgiveninTable1. 4.3 Typesofflanges Figure1illustratesflangesidentifiedaccordingtotype: a)Type 05 Blank flange; b)Type 11 Weldneck flange. 4.4 Designationofflanges Thedesignationoftheflangesshallcontainthefollowinginformation: a) Description(flange); b) Numberofthisstandard(EN10924); c)
30、 Flangetypenumber(11,05resp.); d) Flangefacingtype(e.g.C); e) DN(e.g.DN300); f) Fortype11flangesonly,theneckdiameter, Aandtheneckthickness, S,(e.g.324x4); g) PN(e.g.PN40); h) Material(e.g.ENAW5083O).EN10924:2002(E) 6 EXAMPLE1 Foratype11flange:FlangeEN1092411CDN300324x4PN40ENAW5083O EXAMPLE2 Foratype
31、05flange:FlangeEN1092405CDN300PN40ENAW5083O 5 Generalrequirements 5.1 Flangematerials FlangesshallbemanufacturedfromthematerialgradesENAW5083(AlMg4,5Mn0,7)Oor ENAW6061(AlMg1SiCu)T6asspecifiedinEN12392.Othermaterialsmaybeused.Forthe p/Tratingssee5.5. Weldneckflangesshallbeforgedormadefromextrudedbars
32、;blankflangesshallbeforgedor madefromplate. 5.2 Repairs Repairweldingoftheflangesisnotpermitted. 5.3 Bolting 5.3.1 Theboltingshallbechosenaccordingtothepressure,temperatureandgasket. 5.3.2 Boltingmaterialsshallbeselectedaccordingtothefollowingcriteria: a) ForallserviceconditionsinaccordancewithEN151
33、51(bolt/nut):5.6/5,8.8/8,25Ni15Cr Ti/25Ni15CrTi,A470/A470,A270/A270,18Cr9NiMoAT+C/18Cr9NiMo,18Cr9Ni AT+C/18Cr9Ni; b) Forlesssevereserviceconditionse.g.waterserviceorincaseofoversizedflangedjoints,in accordancewithEN15151(bolt/nut):A450/A450,A250/A250,18Cr9NiMo/18Cr9NiMo, 18Cr9Ni/18Cr9Ni; Thechoiceof
34、thisboltingshallbebasedoneitherspecialexperienceoronrecalculations. c) WhereboltingotherthanspecifiedinEN15151isrequired,thisshallbechosenaccordingto theparametersabovesothattheflangedjointremainstightundertheexpectedoperating conditions. 5.3.3 Theuseofwashers(ENISO887)isrecommended. 5.4 Gaskets Gas
35、ketsshallbeselectedfromtherelevantpartofEN1514. NOTE Ifspiralwoundgasketsareselected,thantheyshouldbelowstressdesign( y=5000, m=3for calculationinaccordancewithASMECode). 5.5 Pressuretemperature( p/T)ratings Thepressuretemperatureratings(p/Tratings)forthematerialgradesin5.1aregiveninTable10. Forothe
36、raluminiumalloys,whichmaybeused,thep/Tratingsshallbeestablishedaccordingtothe serviceconditions. 5.6 Dimensions 5.6.1 DimensionsofflangesshallbeinaccordancewithFigure3toFigure7andasappropriate thefollowingTables: PN10flanges:Table4;EN10924:2002(E) 7 PN16flanges:Table5; PN25flanges:Table6; PN40flange
37、s:Table7; PN63flanges:Table8. NOTE1 ApproximatemassesofflangesaregiveninannexA. NOTE2 Figures3to7areidentical.Theyarerepeatedforbetterhandlingofthestandard. 5.6.2 Boltholesshallbeequallyspacedonthepitchcirclediameter. 5.6.3 Iftheneckthickness, SisorderedsmallerthangiveninTables4to8,theinsidediameter
38、at theneckshallbetaperedatanangleof14to18.If Sisorderedgreater,theborediametershall beAS - 2 . 5.7 Flangefacings 5.7.1 Typesoffacings ThetypesofflangefacingsshallbeasgiveninFigure2,andtheirdimensionsshallbeasgivenin Table2. Ifnotstatedinthepurchaseorder,flangefacingB1isstandardforflangesuptoPN40,fla
39、ngefacing B2isstandardforPN63flanges. 5.7.2 Jointingfacefinish Allflangejointingfacesshallbemachinefinishedand,whencomparedbyvisualortactilemeans withreferencespecimens,shallbeinaccordancewithTable3. NOTE1 Itisnotintendedthatinstrumentmeasurementsaretakenonthejointingfaces. NOTE2 Otherjointingfacefi
40、nishesmaybeagreed. ForjointingfacetypeB1,turningshallbecarriedoutwitharoundnosedtoolinaccordancewith Table3. 5.8 Spotfacingandbackfacingofflanges Anyspotfacingandbackfacingrequiredshallnotreducetheflangethicknesstolessthanthe thicknessspecified.Whenspotfacingisused,thediametershallbelargeenoughtoacc
41、ommodate theoutsidediameteroftheequivalentnormalseriesofwashersinaccordancewithENISO887for theboltsizebeingfitted.Whenaflangeisbackfaced,itispermissibleforthefilletradiustobe reducedbutitshallnotbeeliminatedentirely. 5.9 Tolerances TolerancesondimensionsshallbeasspecifiedinTable9. 5.10 Marking Allflangesshallbemarkedasfollows: a) Flangemanufacturersnameortrademark(e.g.xxx); b) Numberofthisstandard(EN10924); c) DN(e.g.DN300); d) PN(e.g
