BS EN 10253-4-2008 Butt-welding pipe fittings. Wro

BRITISHSTANDARDBSEN10253-4:2008Butt-weldingpipefittings—Part4:Wroughtausteniticandaustenitic-ferritic(duplex)stainlesssteelswithspecificinspectionrequirementsICS23.040.40;77.140.20  Licensedcopy:TheUniversityofHongKong,TheUniversityofHongKong,Versioncorrectasof07/12/200807:50,(c)BSIBSEN10253-4:2008ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon30April2008©BSI2008ISBN9780580534119NationalforewordThisBritishStandardistheUKimplementationofEN10253-4:2008.ItpartiallysupersedesBS1640-2:1962andBS1640-4:1968,whichwillbewithdrawnuponpublicationofBSEN10253-3.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeISE/19,Pipefittings(otherthancastiron).Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.Amendments/corrigendaissuedsincepublicationDateCommentsLicensedcopy:TheUniversityofHongKong,TheUniversityofHongKong,Versioncorrectasof07/12/200807:50,(c)BSIEUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN10253-4March2008ICS23.040.40;77.140.20EnglishVersionButt-weldingpipefittings-Part4:Wroughtausteniticandaustenitic-ferritic(duplex)stainlesssteelswithspecificinspectionrequirementsRaccordsàsouderboutàbout-Partie4:Aciersinoxydablesausténitiquesetausténo-ferritiquesaveccontrôlespécifiqueFormstückezumEinschweißen-Teil4:Austenitischeundaustenitisch-ferritische(Duplex-)StählemitbesonderenPrüfanforderungenThisEuropeanStandardwasapprovedbyCENon5January2008.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©2008CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN10253-4:2008:ELicensedcopy:TheUniversityofHongKong,TheUniversityofHongKong,Versioncorrectasof07/12/200807:50,(c)BSIEN10253-4:2008(E)2ContentsForeword......................................................................................................................................................................3Introduction.................................................................................................................................................................41Scope..............................................................................................................................................................52Normativereferences....................................................................................................................................53Termsanddefinitions...................................................................................................................................74Symbols..........................................................................................................................................................85Classificationofgradesanddesignation...................................................................................................96Informationtobesuppliedbythepurchaser.............................................................................................97Resistancetointernalpressure.................................................................................................................128Manufacturingprocess...............................................................................................................................129Technicalrequirements..............................................................................................................................1410Appearanceandinternalsoundness.........................................................................................................2211Dimensionsandtolerances........................................................................................................................2312Inspection..............................................................................