Designation:B673−05(Reapproved2016)StandardSpecificationforUNSN08925,UNSN08354,andUNSN08926WeldedPipe1ThisstandardisissuedunderthefixeddesignationB673;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThisspecificationcoversUNSN08925,UNSN08354,andUNSN089262weldedpipeforgeneralcorrosionapplica-tions.1.2ThisspecificationcoverspipesizesinschedulesshowninTable1.1.3ASTMInternationalhasadopteddefinitionswherebysomegrades,suchasUNSN08904,previouslyinthisspeci-ficationwererecognizedasstainlesssteels,becausethosegradeshaveironasthelargestelementbymasspercent.SuchgradesareundertheoversightofASTMCommitteeA01anditssubcommittees.TheproductsofN08904previouslycoveredinthisspecificationarenowcoveredbySpecificationA312/A312M.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateSafetyDataSheet(SDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafetyandhealthpractices,anddeterminetheapplicabilityofregulatorylimi-tationspriortouse.2.ReferencedDocuments2.1ASTMStandards:3A312/A312MSpecificationforSeamless,Welded,andHeavilyColdWorkedAusteniticStainlessSteelPipesB775SpecificationforGeneralRequirementsforNickelandNickelAlloyWeldedPipeE527PracticeforNumberingMetalsandAlloysintheUnifiedNumberingSystem(UNS)2.2ANSIStandards:4B2.1PipeThreadsB31.10PowerPipingB36.10WeldedandSeamlessWroughtSteelPipeB36.19StainlessSteelPipe43.Classification3.1Class1—Welded,coldworked,solutiontreated,andnondestructivelytestedinaccordancewith8.3.1...
