Designation:B626−17aStandardSpecificationforWeldedNickelandNickel-CobaltAlloyTube1ThisstandardisissuedunderthefixeddesignationB626;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversweldedtubesmadefromthenickelandnickel-cobaltalloys(UNSN10001,UNSN10242,UNSN10665,UNSN12160,UNSN10629,UNSN10624,UNSN10675,UNSN10276,UNSN06455,UNSN06007,UNSN06975,UNSN08320,UNSN06985,UNSN06002,UNSN06022,UNSN06030,UNSN06035,UNSN06044,UNSN06058,UNSN06059,UNSN06200,UNSN06617,UNSN10362,UNSN06210,UNSN08031,UNSN08034,UNSR30556,UNSN06230,UNSN06686,andUNSR20033)2listedinTable1intendedforheatexchangerandcondensertubesandtubesforgeneralcorrosiveserviceforheat-resistingapplications.1.2Thisspecificationcoverstube1⁄8to31⁄2in.(3.2to88.9mm)inoutsidediameterand0.015to0.148in.(0.41to3.7mm)inclusive,inwallthickness.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateSafetyDataSheet(SDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafety,healthandenvironmentalpractices,anddeterminetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:3B751SpecificationforGeneralRequirementsforNickelandNickelAlloyWel...
