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1、ANAMERICANNATIONALSTANDARDPIPETHREADS,GENERALPURPOSE(INCH)ANSI/ASMEB1.20.1-1983(REVISIONANDREDESIGNATIONOFANSI82.14968)SPONSOREDANDPUBLISHEDBYTHEAMERICANSOCIETYOFMECHANICALENGINEERSUnitedEngineeringCenter345East47thStreetNewYork,N.Y.10017COPYRIGHTAmericanSocietyofMechanic
2、alEngineersLicensedbyInformationHandlingServicesDateofIssuance:August31,1983ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheConsensusCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcomp
3、etentandconcernedinterestshavehadanopportunitytoparticipate.Theproposedcodeorstandardwasmadeavailableforpublicreviewandcommentwhichprovidesanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagen-cies,andthepublic-at-large.ASMEdoesnot"approve,""rate,"oren
4、dorse"anyitem,construction,proprietarydevice,oractivity.ASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithanyitemsmentionedinthisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplic
5、ableLettersPatent,norassumeanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,isentirelytheirownresponsibility.Participationbyfederalagencyrepresentative(s)orperson(s)affiliate
6、dwithindustryisnottobeinterpretedasgovernmentorindustryendorsementofthiscodeorstandard.Nopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisher.Copyright@1983byTHEAMERICANSOCIETYOFMECHANICALENGINE
7、ERSAllRightsReservedPrintedinU.S.A.COPYRIGHTAmericanSocietyofMechanicalEngineersLicensedbyInformationHandlingServicesFOREWORD(ThisForewordisnotpartofAmericanNationalStandard,PipeThreads,GeneralPurpose(Inch)ANSIIASME81.20.1-2983.)In1973AmericanNationalStandardsCommitteeB2,
8、whichhad.formerlybeenresponsibleforpipethreadstandards,wasabsorbedbyANSIStandardsCommitteeB1andr
