ASME-ANSI标准法兰尺寸

8-1FlangesAalcoTel.01932250100Fax:[phone]E-mail:[e-mail]8FlangesThissectioncontainsextractsfromAmericanandBritishspecificationsapplicabletostainlesssteelflanges.SubsectionsandtopicsPagesFlanges-GeneralInformation8-2ASME/ANSIFlanges(incl.MSSSP-44andAPI605)8-4WeldNeckFlanges-WeldingEnds(ASME/ANSI)8-5RingJointFacings-ASME/ANSIB16.5&B16.478-6WeldNeckFlanges-ANSIB16.58-10,8-46SlipOnFlanges-ANSIB16.58-17BlindFlanges-ANSIB16.5&ASMEB16.47(MSSSP-44)8-24,8-46LapJointFlanges-ANSIB16.58-32ThreadedFlanges-ANSIB16.58-39BS3293Flanges(WeldNeckandSlipOnNPS26)8-55BS4504CircularFlanges-General8-60WeldNeckFlange-WeldingEnds8-62FlangeFacings-BS45048-62FlangeDrillingDetails-BS45048-64PlateFlanges(Code101)-BS45048-65WeldNeckFlanges(Code111)-BS45048-66SlipOnFlanges(Code112)-BS45048-68ThreadedFlanges(Code113)-BS45048-69BlankFlanges(Code105)-BS45048-70BS10Flanges8-71Pressure/TemperatureRatings(ASME/ANSI)8-73SpecificationscoveredinthisSectionPageASMEB16.5-1996-PipeFlangesandFlangedFittingsNPS1/2throughNP248-4(general)8-10to8-45ASMEB16.47-1996-LargeDiameterSteelFlangesNPS26throughNPS60(CoversMSSSP-44andAPI605flanges)8-4(general)8-46to8-54MSSSP-441996-Edition,SteelPipelineFlanges(CoveredbyASMEB16.47-1996SeriesA)8-46to8-50APIStandard605-Cancelled(CoveredbyASMEB16.47-1996SeriesB)8-51to8-54BS10:1962-SpecificationforFlangesandBoltingforPipes,Valves,andFittings8-71BS3293:1960(incorporatingamendment1972)-SpecificationforCarbonSteelPipeFlanges(over24inchesnominalsize)forthePetroleumIndustry8-55BS4504:Section3.1:1989(incorporatingamendments)-CircularFlangesforPipes,ValvesandFittings(PNdesignated),Section3.1SpecificationforSteelFlanges8-60ISO7005-1:1992(E),MetallicFlanges-Part1:SteelFlanges(thisissubstantiallythesameasBS4504)8-608-2FlangesAalcoTel.01932250100Fax:[phone]E-mail:[e-mail]-GeneralInformationAFlangeisamethodofconnectingpipes,valves,pumpsandotherequipmenttoformapipeworksystem.Italsoprovideseasyaccessforcleaning,inspectionormodification.Flangesareusuallyweldedorscrewedintosuchsystemsandthenjoinedwithbolts.FlangeTypes
Thisflangeiscircumferentiallyweldedintothesystematitsneckwhichmeansthattheintegrityofthebuttweldedareacanbeeasilyexaminedbyradiography.Theboresofbothpipeandflangematch,whichreducesturbulenceanderosioninsidethepipeline.Theweldneckisthereforefavouredincriticalapplications Thisflangeisslippedoverthepipeandthenfilletwelded.Slip-onflangesareeasytouseinfabricatedapplications.Thisflangeisusedtoblankoffpipelines,valvesandpumps,itcanalsobeusedasaninspectioncover.Itissometimesreferredtoasablankingflange. 
Thisflangeiscounterboredtoacceptthepipebeforebeingfilletwelded.Theboreofthepipeandflangeareboththesamethereforegivinggoodflowcharacteristics.Thisflangeisreferredtoaseitherthreadedorscrewed.Itisusedtoconnectotherthreadedcomponentsinlowpressure,non-criticalapplications.Noweldingisrequired.Theseflangesarealwaysusedwitheitherastubendortaftwhichisbuttweldedtothepipewiththeflangeloosebehindit.Thismeansthestubendortaftalwaysmakestheface.Thelapjointisfavouredinlowpressureapplicationsbecauseitiseasilyassembledandaligned.Toreducecosttheseflangescanbesuppliedwithoutahuband/orintreated,coatedcarbonsteel.Thisisamethodofensuringleakproofflangeconnectionathighpressures.Ametalringiscompressedintoahexagonalgrooveonthefaceoftheflangetomaketheseal.ThisjointingmethodcanbeemployedonWeldNeck,Slip-onandBlindFlanges.Flanges8-3AalcoTel.01932250100Fax:[phone]E-mail:[e-mail]-GeneralInformationSpecificationsRefertopage8-1foralistofflangespecifications(withpagereferences)coveredinthisSection.ManufactureNotes1MSSSP-44flangesaredesignatedSeriesAflangesinASMEB16.47.2API605hasbeencancelled.API605flangesaredesignatedSeriesBflangesinASMEB16.47.3BS10,althoughobsolete,remainsinuseforlightweighteconomystainlesssteelflanges.4WithinspecificationANSIB16.5,platecanonlybeusedtoprovideblindflanges.5MostsmallBS10flangesaremadefrombar.6Castingsarenotincludedinthismanual.❍Materials.Moststandardsspecifythematerialfromwhichtheflangeisproduced.Thepurchasershouldspecifytheexactrequirements.❍FlangeSizes.Allsizesandgradescompatibletostandardpiperangesandwallthicknesses(pressureratings)areavailable.Thetablebelowprovidesasummary.❍FlangeFace.Therearevariousfaceconfigurationsforflanges.Typically:flatface,raisedface,tongueandgroove,ringjoint.❍FaceFinish.ThefinishonthefaceofaflangeismeasuredasanArithmeticalAverageRoughnessHeight(AARH).Thefinishisdeterminedbythestandardused.Forexample,ANSIB16.5specifiesfacefinisheswithinarange125AARH-500AARH(3.2Rato12.5Ra).Otherfinishesareavailableonrequest,forexample1.6Ramax,1.6/3.2Ra,3.2/6.3Raor6.3/12.5Ra.Therange3.2/6.3Raismostcommon.Notes1MSSSP-44flangesaredesignatedSeriesAflangesinASMEB16.47.ItalsocoversflangesintherangeNPS12to24,thesebeingequivalenttoASME/ANSIB16.5flangesinthesamerange(exceptfortheadditionofNPS22inMSSSP-44).2API605hasbeencancelled.API605flangesaredesignatedSeriesBflangesinASMEB16.47.Rangesquotedare