Designation:B345/B345M−11StandardSpecificationforAluminumandAluminum-AlloySeamlessPipeandSeamlessExtrudedTubeforGasandOilTransmissionandDistributionPipingSystems1ThisstandardisissuedunderthefixeddesignationB345/B345M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversseamlesspipeandseamlessextrudedtubeinthealuminumandaluminumalloys(Note1)andtemperslistedinTable1andTable2,respectively.Seamlesspipeandseamlesstubeareintendedforuseinapplicationsinvolvinginternalpressure.NOTE1—Throughoutthisspecificationuseofthetermalloyinthegeneralsenseincludesaluminumaswellasaluminumalloy.NOTE2—Fordrawnseamlesstubes,seeSpecificationsB210andB210M;forextrudedtubes,SpecificationsB221andB221M;fordrawnseamlesstubesforcondensersandheatexchangers,SpecificationsB234andB234M;forseamlesspipeandseamlessextrudedtube,B241/B241M;forroundweldedtubes,SpecificationB313/B313M;forseamlesscon-denserandheatexchangertubeswithintegralfins,SpecificationB404/B404M;forextrudedstructuralpipeandtube,SpecificationB429/B429M;andfordrawntubeforgeneralpurposeapplications,SpecificationB483/B483M.1.2AlloyandtemperdesignationsareinaccordancewithANSIH35.1[H35.1M].TheequivalentUnifiedNumberingSystemalloydesignationsarethoseofTable3precededbyA9,forexample,A93003foraluminumalloy3003inaccordancewithPracticeE527.1.3Foracceptancecriteriaforinclusionofnewaluminumandaluminumalloysinthisspecification,seeAnnexA2.1.4Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecifi-cation.2.ReferencedDocuments2.1Thefollowingdocumentsoftheissueineffectonthedat...
