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LicensedCopy:FELIXHERZING,TUVRHEINLANDBERLINBRANDENBURG5954918,10March2004,UncontrolledCopy,(c)BSIBritishStandardAsinglecopyofthisBritishStandardislicensedtoFELIXHERZING10March2004Thisisanuncontrolledcopy.EnsureuseofthemostcurrentversionofthisdocumentbysearchingBritishStandardsOnlineatbsonline.techindex.co.ukBRITISHSTANDARDBSEN1092-4:2002Flangesandtheirjoints—Circularflangesforpipes,valves,fittingsandaccessories,PNdesignated—Part4:AluminiumalloyflangesTheEuropeanStandardEN1092-4:2002hasthestatusofaBritishStandardICS23.040.60����������������������������������������������������������������������LicensedCopy:FELIXHERZING,TUVRHEINLANDBERLINBRANDENBURG5954918,10March2004,UncontrolledCopy,(c)BSIBSEN1092-4:2002ThisBritishStandard,havingbeenpreparedunderthedirectionoftheEngineeringSectorPolicyandStrategyCommittee,waspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon23July2002©BSI23July2002ISBN0580401324NationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN1092-4:2002.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteePSE/15,Flanges,whichhastheresponsibilityto:Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromu...