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ASME_B16.9-2007.pdf

ASME_B16.9-2007.pdf

上传者: 123zjf123 2010-11-26 评分1 评论0 下载114 收藏0 阅读量701 暂无简介 简介 举报

简介:本文档为《ASME_B16.9-2007pdf》,可适用于工程科技领域,主题内容包含FactoryMadeWroughtButtweldingFittingsANAMERICANNATIONALSTANDARDASMEB(Revis符等。

FactoryMadeWroughtButtweldingFittingsANAMERICANNATIONALSTANDARDASMEB(RevisionofASMEB)ASMEB(RevisionofASMEB)FactoryMadeWroughtButtweldingFittingsANAMERICANNATIONALSTANDARDThreeParkAvenue•NewYork,NYDateofIssuance:December,ThenexteditionofthisStandardisscheduledforpublicationinTherewillbenoaddendaissuedtothiseditionASMEissueswrittenrepliestoinquiriesconcerninginterpretationsoftechnicalaspectsofthisStandardInterpretationsarepublishedontheASMEWebsiteundertheCommitteePagesathttp:cstoolsasmeorgastheyareissuedASMEistheregisteredtrademarkofTheAmericanSocietyofMechanicalEngineersThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandardsTheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunitytoparticipateTheproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatprovidesanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagencies,andthepublicatlargeASMEdoesnot“approve,”“rate,”or“endorse”anyitem,construction,proprietarydevice,oractivityASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithanyitemsmentionedinthisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliabilityUsersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,isentirelytheirownresponsibilityParticipationbyfederalagencyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedasgovernmentorindustryendorsementofthiscodeorstandardASMEacceptsresponsibilityforonlythoseinterpretationsofthisdocumentissuedinaccordancewiththeestablishedASMEproceduresandpolicies,whichprecludestheissuanceofinterpretationsbyindividualsNopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisherTheAmericanSocietyofMechanicalEngineersThreeParkAvenue,NewYork,NYCopyrightbyTHEAMERICANSOCIETYOFMECHANICALENGINEERSAllrightsreservedPrintedinUSACONTENTSForewordivCommitteeRostervCorrespondenceWiththeBCommitteeviScopePressureRatingsSizeMarkingMaterialFittingDimensionsSurfaceContoursEndPreparationDesignProofTestProductionTestsTolerancesFigureMaximumEnvelopeforWeldingEndTransitionsTablesDimensionsofLongRadiusElbowsDimensionsofLongRadiusReducingElbowsDimensionsofLongRadiusReturnsDimensionsofShortRadiusElbowsDimensionsofShortRadiusdegReturnsDimensionsofDElbowsDimensionsofStraightTeesandCrossesDimensionsofReducingOutletTeesandReducingOutletCrossesDimensionsofLapJointStubEndsDimensionsofCapsDimensionsofReducersWeldingBevelsandRootFaceTolerancesMandatoryAppendicesIInchTablesIIReferencesNonmandatoryAppendixAQualitySystemProgramiiiFOREWORDIn,theAmericanEngineeringStandardsCommittee,latertheAmericanStandardsAssociation(ASA),organizedSectionalCommitteeBtounifyandfurtherdevelopnationalstandardsforpipeflangesandfittings(and,later,forvalves,gaskets,andvalveactuators)CosponsorsoftheBCommitteewereTheAmericanSocietyofMechanicalEngineers(ASME),theHeatingandPipingContractorsNationalAssociationnowtheMechanicalContractorsAssociationofAmerica(MCAA),andtheManufacturersStandardizationSocietyoftheValveandFittingsIndustry(MSS)CosponsorswerelaterdesignatedascosecretariatorganizationsStandardizationofweldingfittingswasinitiatedinbyasubgroup(designatedSubgroup)ofSubcommitteeAfterconsiderationofseveraldrafts,astandardwasapprovedbytheCommittee,cosponsors,andASA,andpublishedwiththedesignationASABRevisionsweremadeinandtoaddsizesuptoNPSandtocompletecoverageoffittingsinsomesizesTheserevisionswereapprovedandpublishedasASABandASABWiththesubgroupnowdesignatedSubcommittee(laterSubcommitteeF),furtherrevisionswerebeguntoclarifytheintentofthestandard,toaddangularitytolerances,andtoincludefittingsofdifferenttypes(longradiusreducingelbowsandcrosses)andsmallersizes(NPS⁄andNPS⁄)ThisrevisionwaspublishedasASABafterASAapprovalAfterreorganizationofASA,firstastheUnitedStatesofAmericaStandardsInstitute(USASI),thenastheAmericanNationalStandardsInstitute(ANSI),withtheSectionalCommitteebeingredesignatedasanAmericanNationalStandardsCommittee,anotherrevisionincreasingthesizerangetoNPSandrevisingthetextforclaritywasapprovedandpublishedasANSIBIn,SubcommitteeFbeganamajorrevisiontobringthestandarduptodatewithcurrentpracticeandusageCommonfractionswereexpressedasdecimals(butwithoutintendinghigherprecision)andmetricdimensionalequivalentswereaddedProvisionsforstepwisechangeofradiusforNPS⁄longradiuselbowsanddegreturnswereintroducedFollowingStandardsCommittee,cosecretariat,andANSIapproval,therevisionwaspublishedasANSIBItwasupdatedbyacorrectiveaddendum,Ba,issuedinFebruaryIn,AmericanNationalStandardsCommitteeBwasreorganizedasanASMECommitteeoperatingunderproceduresaccreditedbyANSIInASMEANSIB,thetextwasrevisedandinchdimensionswereestablishedasthestandardIn,theSubcommitteereviewedthedocumentandmadeanumberofrevisionsthatwereincludedinASMEBDimensionsforshortpatternlapjointswerealsoaddedInASMEB,shortradiuselbowsandreturnswereadded,whichincludedalldimensionsandtolerancesofASMEBMetricunitswereprovidedasanindependentbutparallelalternativestandardtoUSCustomaryunitsandaQualitySystemProgramappendixwasaddedIn,theSubcommitteereviewedthedocumentandmadeanumberofrevisionsThescopeofthestandardwaschangedtopermitfabricatedlapjointstubendsemployingcircumferentialorintersectionweldsIn,theSubcommitteereviewedthedocumentandmadeanumberofadditionsandrevisionsSegmentalelbowrequirementswereaddedaswereDelbowdimensionsReferencedocumentswereupdatedThisStandardwasapprovedasanAmericanNationalStandardonMay,ivASMEBCOMMITTEEStandardizationofValves,Flanges,Fittings,andGaskets(ThefollowingistherosteroftheCommitteeatthetimeofapprovalofthisStandard)STANDARDSCOMMITTEEOFFICERSHRSonderegger,ChairMLNayyar,ViceChairUD’Urso,SecretarySTANDARDSCOMMITTEEPERSONNELRWBarnes,AnricEnterprises,IncWBBedesem,ExxonMobilResearchEngineeringCoDFBuccicone,ElkhartProducts,CorpMAClark,Nibco,IncUD’Urso,TheAmericanSocietyofMechanicalEngineersCEFloren,MuellerCoDRFrikken,BechtEngineeringCoMLHenderson,ForgitalUSAGAJolly,VogtValvesFlowserveCorpSUBCOMMITTEEFSTEELTHREADEDANDWELDEDFITTINGSGAJolly,Chair,VogtValvesFlowserveCorpGACuccio,ViceChair,CapitolManufacturingCoTLazar,Secretary,TheAmericanSocietyofMechanicalEngineersAAppleton,AlloyStainlessProductCo,IncWJBirkholz,FlowlineDivision,MarkovitzEnterprises,IncKWDoughty,ShawAlloyPipingProducts,IncJPEllenberger,ConsultantDRFrikken,BechtEngineeringCovMKatcher,HaynesInternationalWNMcLean,NewcoValvesTAMcMahon,FisherControlsInternational,IncMLNayyar,BechtelPowerCorpJDPage,USNuclearRegulatoryCommissionWHPatrick,TheDowChemicalCoRASchmidt,HackneyLadish,IncHRSonderegger,AnvilInternational,IncWMStephan,FlexitallicLPDAWilliams,SouthernCoGenerationREJohnson,ConsultantCJLafferty,PennsylvaniaMachineWorks,IncDHMonroe,ConsultantRASchmidt,HackneyLadish,IncHRSonderegger,AnvilInternational,IncJPTucker,FlowserveMMZaidi,JacobsEngineeringCORRESPONDENCEWITHTHEBCOMMITTEEGeneralASMEStandardsaredevelopedandmaintainedwiththeintenttorepresenttheconsensusofconcernedinterestsAssuch,usersofthisStandardmayinteractwiththeCommitteebyrequestinginterpretations,proposingrevisions,andattendingCommitteemeetingsCorrespondenceshouldbeaddressedto:Secretary,BStandardsCommitteeTheAmericanSocietyofMechanicalEngineersThreeParkAvenueNewYork,NYAsanalternative,inquiriesmaybesubmittedviaemailto:SecretaryBasmeorgProposingRevisionsRevisionsaremadeperiodicallytotheStandardtoincorporatechangesthatappearnecessaryordesirable,asdemonstratedbytheexperiencegainedfromtheapplicationoftheStandardApprovedrevisionswillbepublishedperiodicallyTheCommitteewelcomesproposalsforrevisionstothisStandardSuchproposalsshouldbeasspecificaspossible,citingtheparagraphnumber(s),theproposedwording,andadetaileddescriptionofthereasonsfortheproposal,includinganypertinentdocumentationInterpretationsUponrequest,theBCommitteewillrenderaninterpretationofanyrequirementoftheStandardInterpretationscanonlyberenderedinresponsetoawrittenrequestsenttotheSecretaryoftheBStandardsCommitteeTherequestforinterpretationshouldbeclearandunambiguousItisfurtherrecommendedthattheinquirersubmithisherrequestinthefollowingformat:Subject:Citetheapplicableparagraphnumber(s)andthetopicoftheinquiryEdition:CitetheapplicableeditionoftheStandardforwhichtheinterpretationisbeingrequestedQuestion:Phrasethequestionasarequestforaninterpretationofaspecificrequirementsuitableforgeneralunderstandinganduse,notasarequestforanapprovalofaproprietarydesignorsituationTheinquirermayalsoincludeanyplansordrawingswhicharenecessarytoexplainthequestionhowever,theyshouldnotcontainproprietarynamesorinformationRequeststhatarenotinthisformatwillberewritteninthisformatbytheCommitteepriortobeinganswered,whichmayinadvertentlychangetheintentoftheoriginalrequestASMEproceduresprovideforreconsiderationofanyinterpretationwhenorifadditionalinformationthatmightaffectaninterpretationisavailableFurther,personsaggrievedbyaninterpretationmayappealtothecognizantASMECommitteeorSubcommitteeASMEdoesnot“approve,”“certify,”“rate,”or“endorse”anyitem,construction,proprietarydevice,oractivityAttendingCommitteeMeetingsTheBStandardsCommitteeregularlyholdsmeetings,whichareopentothepublicPersonswishingtoattendanymeetingshouldcontacttheSecretaryoftheBStandardsCommitteeviASMEBFACTORYMADEWROUGHTBUTTWELDINGFITTINGSSCOPEGeneralThisStandardcoversoveralldimensions,tolerances,ratings,testing,andmarkingsforfactorymadewroughtbuttweldingfittingsinsizesNPS⁄throughNPS(DNthroughDN)SpecialFittingsFittingsmaybemadetospecialdimensions,sizes,shapes,andtolerancesbyagreementbetweenthemanufacturerandthepurchaserFabricatedFittingsFabricatedlateralsandotherfittingsemployingcircumferentialorintersectionweldsareconsideredpipefabricationandarenotwithinthescopeofthisStandardFabricatedlapjointstubendsareexemptfromtheaboverestrictions,providedtheymeetalltherequirementsoftheapplicableASTMmaterialspecificationlistedinsectionStandardUnitsThevaluesstatedineithermetricorUSCustomaryunitsaretoberegardedseparatelyasstandardWithinthetext,theUSCustomaryunitsareshowninparenthesesThevaluesstatedineachsystemarenotexactequivalentstherefore,eachsystemmustbeusedindependentlyoftheotherCombiningvaluesfromthetwosystemsmayresultinnonconformancewiththisStandardThedesignationforsizeisNPSforbothmetricandcustomarydimensionedfittingsFittingpressureratingisassociatedwiththeconnectingwallthicknessofpipeofequivalentsizeandmaterialReferencesReferencedStandardsStandardsandspecificationsadoptedbyreferenceinthisStandardareshowninMandatoryAppendixIIItisnotconsideredpracticaltoidentifythespecificeditionofeachstandardandspecificationintheindividualreferencesInstead,thespecificeditionreferenceisidentifiedinMandatoryAppendixIIAproductmadeinconformancewithaprioreditionofreferencedstandardsandinallotherrespectsconformingtothisStandardwillbeconsideredtobeinconformanceCodesandRegulationsAfittingusedunderthejurisdictionoftheASMEBoilerandPressureVesselCode,theASMECodeforPressurePiping,oragovernmentalregulationissubjecttoanylimitationofthatcodeorregulationThisincludesanymaximumtemperaturelimitation,orrulegoverningtheuseofamaterialatlowtemperatureServiceConditionsCriteriaforselectionoffittingtypesandmaterialssuitableforparticularfluidservicearenotwithinthescopeofthisStandardWeldingInstallationweldingrequirementsareoutsidethescopeofthisStandardQualitySystemsNonmandatoryrequirementsrelatingtothefittingmanufacturer’sQualitySystemProgramaredescribedinNonmandatoryAppendixAConventionForthepurposeofdeterminingconformancewiththisStandard,theconventionforfixingsignificantdigitswherelimits(maximumorminimumvalues)arespecifiedshallberoundedoffasdefinedinASTMEThisrequiresthatanobservedorcalculatedvalueshallberoundedofftothenearestunitinthelastrighthanddigitusedinexpressingthelimitDecimalvaluesandtolerancesdonotimplyaparticularmethodofmeasurementPressureRatingDesignationClass,followedbyadimensionlessnumber,isthedesignationforpressure–temperatureratingsStandardizeddesignationsforflangesperASMEBreferencedinthisStandardareClasses,,,,,andPRESSURERATINGSBasisofRatingsTheallowablepressureratingsforfittingsdesignedinaccordancewiththisStandardmaybecalculatedasforstraightseamlesspipeofequivalentmaterial(asshownbycomparisonofcompositionandmechanicalpropertiesintherespectivematerialspecifications)inASMEBaccordancewiththerulesestablishedintheapplicablesectionsofASMEB,CodeforPressurePipingForthecalculation,applicabledataforthepipesize,wallthickness,andmaterialthatisequivalenttothatofthefittingshallbeusedPipesize,wallthickness(orschedulenumber),andmaterialidentityonthefittingsareinlieuofpressureratingmarkingsDesignofFittingsThedesignoffittingsshallbeestablishedbymathematicalanalyses(eg,ASMEBforbends)containedinnationallyrecognizedpressurevesselorpipingcodes,oratthemanufacturer’soptionbyprooftestinginaccordancewithsectionofthisStandardInordertomeetdesignormanufacturingrequirements,itisexpectedthatsomeportionofformedfittingsmayhavetobethickerthanthepipewallwithwhichthefittingisintendedtobeusedThe

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