Designation:B924−02(Reapproved2017)StandardSpecificationforSeamlessandWeldedNickelAlloyCondenserandHeatExchangerTubesWithIntegralFins1ThisstandardisissuedunderthefixeddesignationB924;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecification2describesseamlessandweldednickelalloytubingonwhichtheexternalorinternalsurface,orboth,hasbeenmodifiedbyacoldformingprocesstoproduceanintegralenhancedsurface,forimprovedheattransfer.Thetubesareusedinsurfacecondensers,evaporators,heatex-changersandsimilarheattransferapparatusinunfinnedenddiametersuptoandincluding1in.(25.4mm).1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thefollowingprecautionarystatementpertainstothetestmethodportiononly:Section10ofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateSafetyDataSheet(SDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafetyandhealthpractices,anddeter-minetheapplicabilityofregulatoryrequirementspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:3A941TerminologyRelatingtoSteel,StainlessSteel,RelatedAlloys,andFerroalloysB163SpecificationforSeamlessNickelandNickelAlloyCondenserandHeat-ExchangerTubesB167SpecificationforNickel-Chromium-IronAlloys(UNSN06600,N06...
