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《ASTM A312A312M-18 Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes英文版》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、ThisinternationalstandardwasdevelopedinaccordancewithinternationallyrecognizedprinciplesonstandardizationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecommendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Com
2、mittee.Designation:A312/A312M−18UsedinUSDOE-NEstandardsStandardSpeciÞcationforSeamless,Welded,andHeavilyColdWorkedAustenitic1StainlessSteelPipesThisstandardisissuedundertheÞxeddesignationA312/A312M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladopt
3、ionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*andfurnishedprovidedsuchpipecomplieswithallother2requirementsofthisspeciÞcation.1.
4、1ThisspeciÞcationcoversseamless,straight-seamwelded,andheavilycoldworkedweldedausteniticstainless1.5GradesTP321andTP321Hhavelowerstrengthrequire-steelpipeintendedforhigh-temperatureandgeneralcorrosivementsforpipemanufacturedbytheseamlessprocessinservice.nominalwallthickne
5、ssesgreaterthan3Ú8in.[9.5mm].NOTE1ÑWhentheimpacttestcriterionforalow-temperatureservice1.6ThevaluesstatedineitherSIunitsorinch-poundunitswouldbe15ftálbf[20J]energyabsorptionor15mils[0.38mm]lateralaretoberegardedseparatelyasstandard.Withinthetext,theexpansion,someoftheaust
6、eniticstainlesssteelgradescoveredbythisSIunitsareshowninbrackets.ThevaluesstatedineachspeciÞcationareacceptedbycertainpressurevesselorpipingcodessystemmaynotbeexactequivalents;therefore,eachsystemwithoutthenecessityofmakingtheactualtest.Forexample,GradesTP304,TP304L,andTP
7、347areacceptedbytheASMEPressureVesselshallbeusedindependentlyoftheother.CombiningvaluesCode,SectionVIIIDivision1,andbytheChemicalPlantandReÞneryfromthetwosystemsmayresultinnon-conformancewiththePipingCode,ASMEB31.3,forserviceattemperaturesaslowas−425¡Fstandard.Theinch-pou
8、ndunitsshallapplyunlesstheÒMÓ[−250¡C]withoutqualiÞcationbyimpacttests.OtherAISIstainlesssteeldes
