BRITISHSTANDARDBSEN1092-1:2007Flangesandtheirjoints—Circularflangesforpipes,valves,fittingsandaccessories,PNdesignated—Part1:SteelflangesTheEuropeanStandardEN1092-1:2007hasthestatusofaBritishStandardICS23.040.60 Licensedcopy:PONTYPRIDDCOLLEGE,07/04/2008,UncontrolledCopy,©BSI©BSI2007ISBN9780580553134NationalforewordThisBritishStandardistheUKimplementationofEN1092-1:2007.ItsupersedesBSEN1092-1:2002whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteePSE/15,Flanges.InBSEN1092-1:2007,thematerialsandmaterialgroupsusedinthemanufactureofflangesaregiveninTable9andtheircorrespondingPressure/TemperatureratingsaregiveninAnnexG(normative).AdditionalmaterialsthatarewidelyinusedinEuropearelistedinAnnexD(informative)butBSEN1092-1:2007containsnocorrespondingPressure/Temperatureinformationforthesematerials.NationalAnnexNA(informative)containsguidanceonPressure/TemperatureratingsformaterialsS235JR/1.0038andASMESA105,whicharepredominantlyusedintheUK.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.AmendmentsissuedsincepublicationAmd.No.DateCommentsLicensedcopy:PONTYPRIDDCOLLEGE,07/04/2008,UncontrolledCopy,©BSI:SteelflangesBridesetleursassemblages-Bridescirculairespourtubes,appareilsderobinetterie,raccordsetaccessoires,désignéesPN-Partie1:BridesenacierFlanscheundihreVerbindungen-RundeFlanschefürRohre,Armaturen,FormstückeundZubehörteile,nachPNbezeichnet-Teil1:StahlflanscheThisEuropeanStandardwasapprovedbyCENon23June2007.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCENManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCENManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Bulgaria,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Romania,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITÉEUROPÉENDENORMALISATIONEUROPÄISCHESKOMITEEFÜRNORMUNGManagementCentre:ruedeStassart,36B-1050Brussels©2007CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN1092-1:2007:ELicensedcopy:PONTYPRIDDCOLLEGE,07/04/2008,UncontrolledCopy,©BSI(E)2ContentsPageForeword......................................................................................................................................................................4Introduction.................................................................................................................................................................51Scope..............................................................................................................................................................62Normativereferences....................................................................................................................................63Termsanddefinitions...................................................................................................................................84Designation....................................................................................................................................................94.1General............................................................................................................................................................94.2Standarddesignation....................................................................................................................................95Generalrequirements..................................................................................................................................105.1Materials.......................................................................................................................................................105.1.1General...................................................................