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BRITISHSTANDARDBSEN1759-4:2003Flangesandtheirjoint—Circularflangesforpipes,valves,fittingsandaccessories,classdesignated—Part4:AluminiumalloyflangesTheEuropeanStandardEN1759-4:2003hasthestatusofaBritishStandardICS23.040.60����������������������������������������������������������������������LicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonApr0210:17:18GMT+00:002007,UncontrolledCopy,(c)BSIBSEN1759-4:2003ThisBritishStandard,waspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon1October2003©BSI1October2003ISBN058042684XNationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN1759-4:2003.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteePSE/15,Flanges,whichhastheresponsibilityto:Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to16,aninsidebackcoverandabackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.AmendmentsissuedsincepublicationAmd.No.DateCommentsLicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonApr0210:17:18GMT+00:002007,...