ASME-B16.20-2012-管法兰用环垫式

ANAMERICANNATIONALSTANDARDASMEB16.20-2012(RevisionofASMEB16.20-2007)MetallicGasketsforPipeFlangesRing-Joint,Spiral-Wound,andJacketedCopyrightASMEInternationalProvidedbyIHSunderlicensewithASMENotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,```,,,,````-`-`,,`,,`,`,,`---CopyrightASMEInternationalProvidedbyIHSunderlicensewithASMENotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,```,,,,````-`-`,,`,,`,`,,`---ASMEB16.20-2012(RevisionofASMEB16.20-2007)MetallicGasketsforPipeFlangesRing-Joint,Spiral-Wound,andJacketedANAMERICANNATIONALSTANDARDTwoParkAvenue•NewYork,NY•10016USACopyrightASMEInternationalProvidedbyIHSunderlicensewithASMENotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,```,,,,````-`-`,,`,,`,`,,`---DateofIssuance:June25,2013ThenexteditionofthisStandardisscheduledforpublicationin2017.ASMEissueswrittenrepliestoinquiriesconcerninginterpretationsoftechnicalaspectsofthisStandard.PeriodicallycertainactionsoftheASMEB16CommitteemaybepublishedasCases.CasesandinterpretationsarepublishedontheASMEWebsiteundertheCommitteePagesat://cstools.asme.org/.Thereisanoptionavailabletoautomaticallyreceiveane-mailnotificationwhenerrataarepostedtoaparticularcodeorstandard.ThisoptioncanbefoundontheappropriateCommitteePageafterselecting“Errata”inthe“PublicationInformation”section.ASMEistheregisteredtrademarkofTheAmericanSocietyofMechanicalEngineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunitytoparticipate.Theproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatprovidesanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagencies,andthepublic-at-large.ASMEdoesnot“approve,”“rate,”or“endorse”anyitem,construction,proprietarydevice,oractivity.ASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithanyitemsmentionedinthisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumesanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,isentirelytheirownresponsibility.Participationbyfederalagencyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedasgovernmentorindustryendorsementofthiscodeorstandard.ASMEacceptsresponsibilityforonlythoseinterpretationsofthisdocumentissuedinaccordancewiththeestablishedASMEproceduresandpolicies,whichprecludestheissuanceofinterpretationsbyindividuals.Nopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisher.TheAmericanSocietyofMechanicalEngineersTwoParkAvenue,NewYork,NY10016-5990Copyright©2013byTHEAMERICANSOCIETYOFMECHANICALENGINEERSAllrightsreservedPrintedinU.S.A.CopyrightASMEInternationalProvidedbyIHSunderlicensewithASMENotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,```,,,,````-`-`,,`,,`,`,,`---CONTENTSForeword..............................................................................vCommitteeRoster.....................................................................viCorrespondenceWiththeB16Committee..............................................viiImportantInformationConcerningUseofAsbestosorAlternativeMaterials............viiiSummaryofChanges..................................................................xi1Scope..............................................................................12Ring-JointGaskets..................................................................13Spiral-WoundGaskets...............................................................24JacketedGaskets....................................................................35GroovedMetalGasketsWithCoveringLayers.........................................3Figures1Spiral-WoundGaskets(Metric).....................................................52JacketedGaskets(Metric)..........................................................53GroovedMetalGasketWithCoveringLayers.......................................64IllustrationofExampleMarkingsforGroovedMetalGasketWithCoveringLayers....................................................7Tables1MaximumHardnessforRingGaskets..............................................12RingGasketMarkings.............................................................23TypeRRingGasketDimensionsandTolerances....................................84PipeSizesforTypeRRingGasketsSuitableforReferencedStandards...............115TypeRXRingGasketDi