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asme16.9 2007

ASME B16.9-2007 工厂制造的锻轧制对焊管配件

Factory-Made
Wrought
Buttwelding
Fittings
AN AMERICAN NATIONAL STANDARD
ASME B16.9-2007
(Revision of ASME B16.9-2003)ASMEB16.9-2007
(RevisionofASMEB16.9-2003)
Factory-Made
Wrought
Buttwelding
Fittings
ANAMERICANNATIONALSTANDARD
Three Park Avenue  •  New York, NY 10016DateofIssuance:December7,2007
ThenexteditionofthisStandardisscheduledforpublicationin2012.Therewillbenoaddenda
issuedtothisedition.
ASMEissueswrittenrepliestoinquiriesconcerninginterpretationsoftechnicalaspectsofthis
Standard.InterpretationsarepublishedontheASMEWebsiteundertheCommitteePagesat
http://cstools.asme.orgastheyareissued.
ASMEistheregisteredtrademarkofTheAmericanSocietyofMechanicalEngineers.
ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNational
Standards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfrom
competentandconcernedinterestshavehadanopportunitytoparticipate.Theproposedcodeorstandardwasmade
availableforpublicreviewandcommentthatprovidesanopportunityforadditionalpublicinputfromindustry,academia,
regulatoryagencies,andthepublic-at-large.
ASMEdoesnot“approve,”“rate,”or“endorse”anyitem,construction,proprietarydevice,oractivity.
ASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithany
itemsmentionedinthisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityfor
infringementofanyapplicableletterspatent,norassumeanysuchliability.Usersofacodeorstandardareexpressly
advisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,is
entirelytheirownresponsibility.
Participationbyfederalagencyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedas
governmentorindustryendorsementofthiscodeorstandard.
ASMEacceptsresponsibilityforonlythoseinterpretationsofthisdocumentissuedinaccordancewiththeestablished
ASMEproceduresandpolicies,whichprecludestheissuanceofinterpretationsbyindividuals.
Nopartofthisdocumentmaybereproducedinanyform,
inanelectronicretrievalsystemorotherwise,
withoutthepriorwrittenpermissionofthepublisher.
TheAmericanSocietyofMechanicalEngineers
ThreeParkAvenue,NewYork,NY10016-5990
Copyright©2007by
THEAMERICANSOCIETYOFMECHANICALENGINEERS
Allrightsreserved
PrintedinU.S.A.CONTENTS
Foreword ..............................................................................iv
CommitteeRoster .....................................................................v
CorrespondenceWiththeB16Committee ..............................................vi
1Scope .............................................................................1
2PressureRatings...................................................................1
3Size...............................................................................2
4Marking ...........................................................................2
5Material ...........................................................................2
6FittingDimensions .................................................................2
7SurfaceContours...................................................................3
8EndPreparation....................................................................3
9DesignProofTest ..................................................................3
10ProductionTests ...................................................................4
11Tolerances.........................................................................4
Figure
1MaximumEnvelopeforWeldingEndTransitions ..................................18
Tables
1DimensionsofLongRadiusElbows ...............................................5
2DimensionsofLongRadiusReducingElbows .....................................6
3DimensionsofLongRadiusReturns ..............................................7
4DimensionsofShortRadiusElbows ...............................................7
5DimensionsofShortRadius180-degReturns ......................................8
6Dimensionsof3DElbows ........................................................8
7DimensionsofStraightTeesandCrosses ..........................................9
8DimensionsofReducingOutletTeesandReducingOutletCrosses .................10
9DimensionsofLapJointStubEnds ...............................................13
10DimensionsofCaps ..............................................................14
11DimensionsofReducers ..........................................................15
12WeldingBevelsandRootFace ....................................................17
13Tolerances ........................................................................19
MandatoryAppendices
IInchTables .......................................................................21
IIReferences ........................................................................35
NonmandatoryAppendix
AQualitySystemProgram ..........................................................36
iiiFOREWORD
In1921,theAmericanEngineeringStandardsCommittee,latertheAmericanStandardsAssocia-
tion(ASA),organizedSectionalCommitteeB16tounifyandfurtherdevelopnationalstandards
forpipeflangesandfittings(and,later,forvalves,gaskets,andvalveactuators).Cosponsorsof
theB16CommitteewereTheAmericanSocietyofMechanicalEngineers(ASME),theHeating
andPipingContractorsNationalAssociation[nowtheMechanicalContractorsAssociationof
America(MCAA)],andtheManufacturersStandardizationSocietyoftheValveandFittings
Industry(MSS).Cosponsorswerelaterdesignatedascosecretariatorganizations.
Standardizationofweldingfittingswasinitiatedin1937byasubgroup(designatedSubgroup6)
ofSubcommittee3.Afterconsiderationofseveraldrafts,astandardwasapprovedbytheCommit-
tee,cosponsors,andASA,andpublishedwiththedesignationASAB16.9-1940.
Revisionsweremadein1950and1955toaddsizesuptoNPS24andtocompletecoverage
offittingsinsomesizes.TheserevisionswereapprovedandpublishedasASAB16.9-1951and
ASAB16.9-1958.WiththesubgroupnowdesignatedSubcommittee6(laterSubcommitteeF),
furtherrevisionswerebeguntoclarifytheintentofthestandard,toaddangularitytolerances,
andtoincludefittingsofdifferenttypes(longradiusreducingelbowsandcrosses)andsmaller
sizes(NPS 1

4 andNPS 1

2).ThisrevisionwaspublishedasASAB16.9-1964afterASAapproval.
AfterreorganizationofASA,firstastheUnitedStatesofAmericaStandardsInstitute(USASI),
thenastheAmericanNationalStandardsInstitute(ANSI),withtheSectionalCommitteebeing
redesignatedasanAmericanNationalStandardsCommittee,anotherrevisionincreasingthesize
rangetoNPS48andrevisingthetextforclaritywasapprovedandpublishedasANSIB16.9-1971.
In1975,SubcommitteeFbeganamajorrevisiontobringthestandarduptodatewithcurrent
practiceandusage.Commonfractionswereexpressedasdecimals(butwithoutintendinghigher
precision)andmetricdimensionalequivalentswereadded.Provisionsforstep-wisechangeof
radiusforNPS 3

4 longradiuselbowsand180-degreturnswereintroduced.FollowingStandards
Committee,cosecretariat,andANSIapproval,therevisionwaspublishedasANSIB16.9-1978.
Itwasupdatedbyacorrectiveaddendum,B16.9a-1981,issuedinFebruary1982.
In1982,AmericanNationalStandardsCommitteeB16wasreorganizedasanASMECommittee
operatingunderproceduresaccreditedbyANSI.InASME/ANSIB16.9-1986,thetextwasrevised
andinchdimensionswereestablishedasthestandard.
In1991,theSubcommitteereviewedthedocumentandmadeanumberofrevisionsthatwere
includedinASMEB16.9-1993.Dimensionsforshortpatternlapjointswerealsoadded.
InASMEB16.9-2001,shortradiuselbowsandreturnswereadded,whichincludedalldimen-
sionsandtolerancesofASMEB16.28-1994.Metricunitswereprovidedasanindependentbut
parallelalternativestandardtoU.S.CustomaryunitsandaQualitySystemProgramappendix
wasadded.
In2003,theSubcommitteereviewedthedocumentandmadeanumberofrevisions.Thescope
ofthestandardwaschangedtopermitfabricatedlapjointstubendsemployingcircumferential
orintersectionwelds.
In2006,theSubcommitteereviewedthedocumentandmadeanumberofadditionsand
revisions.Segmentalelbowrequirementswereaddedaswere3Delbowdimensions.Reference
documentswereupdated.
ThisStandardwasapprovedasanAmericanNationalStandardonMay18,2007.
ivASMEB16COMMITTEE
StandardizationofValves,Flanges,Fittings,andGaskets
(ThefollowingistherosteroftheCommitteeatthetimeofapprovalofthisStandard.)
STANDARDSCOMMITTEEOFFICERS
H.R.Sonderegger, Chair
M.L.Nayyar, ViceChair
U.D’Urso, Secretary
STANDARDSCOMMITTEEPERSONNEL
R.W.Barnes, AnricEnterprises,Inc.
W.B.Bedesem, ExxonMobilResearch&EngineeringCo.
D.F.Buccicone, ElkhartProducts,Corp.
M.A.Clark, Nibco,Inc.
U.D’Urso, TheAmericanSocietyofMechanicalEngineers
C.E.Floren, MuellerCo.
D.R.Frikken, BechtEngineeringCo.
M.L.Henderson, ForgitalUSA
G.A.Jolly, VogtValves/FlowserveCorp.
SUBCOMMITTEEF—STEEL-THREADEDANDWELDEDFITTINGS
G.A.Jolly, Chair, VogtValves/FlowserveCorp.
G.A.Cuccio, ViceChair, CapitolManufacturingCo.
T.Lazar, Secretary, TheAmericanSocietyofMechanicalEngineers
A.Appleton, AlloyStainlessProductCo.,Inc.
W.J.Birkholz, FlowlineDivision,MarkovitzEnterprises,Inc.
K.W.Doughty, ShawAlloyPipingProducts,Inc.
J.P.Ellenberger, Consultant
D.R.Frikken, BechtEngineeringCo.

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