MSS SP-6-2007 管法兰以及阀门和管件端法兰的接触面标准精度

MSSSP-6-2007StandardFinishesforContactFacesofPipeFlangesandConnecting-EndFlangesofValvesandFittingsStandardPracticeDevelopedandApprovedbytheManufacturersStandardizationSocietyoftheValveandFittingsIndustry,Inc.127ParkStreet,NEVienna,Virginia22180Phone:[phone]Fax:[phone]E-mail:[e-mail]`,,```,,,,````-`-`,,`,,`,`,,`---MSSSTANDARDPRACTICESP-6iThisMSSStandardPracticewasdevelopedundertheconsensusoftheMSSTechnicalCommittees102,110,201,andtheMSSCoordinatingCommittee.ThecontentofthisStandardPracticeistheresultoftheeffortsofcompetentandconcernedvolunteerstoprovideaneffective,clear,andnon-exclusivespecificationthatwillbenefittheindustryasawhole.ThisMSSStandardPracticeisintendedasabasisforcommonpracticebythemanufacturer,theuser,andthegeneralpublic.TheexistenceofanMSSStandardPracticedoesnotinitselfprecludethemanufacture,sale,oruseofproductsnotconformingtotheStandardPractice.Mandatoryconformanceisestablishedonlybyreferenceinacode,specification,salescontract,orpubliclaw,asapplicable.UnlessotherwisespecificallynotedinthisMSSSP,anystandardreferredtohereinisidentifiedbythedateofissuethatwasapplicabletothereferencedstandard(s)atthedateofissueofthisMSSSP.(SeeAnnexA.)U.S.customaryunitsinthisSParethestandard;themetric(SI)unitsareforreferenceonly.InthisStandardPracticeallnotes,annexes,tables,andfiguresareconstruedtobeessentialtotheunderstandingofthemessageofthestandard,andareconsideredpartofthetextunlessnotedassupplemental.Allappendicesappearinginthisdocumentareconstruedassupplemental.Supplementalinformationdoesnotincludemandatoryrequirements.Substantivechangesinthis2007editionare“flagged”byparallelbarsasshownonthemarginsofthisparagraph.Thespecificdetailofthechangemaybedeterminedbycomparingthematerialflaggedwiththatinthepreviousedition.Anypartofthisstandardmaybequoted.Creditlinesshouldread‘ExtractedfromMSSSP-6,2007withpermissionofthepublisher,theManufacturersStandardizationSociety.'ReproductionprohibitedundercopyrightconventionunlesswrittenpermissionisgrantedbytheManufacturersStandardizationSocietyoftheValveandFittingsIndustryInc.OriginallyApprovedDecember,1929Copyright©,1985byManufacturersStandardizationSocietyoftheValveandFittingsIndustry,Inc.PrintedinU.S.A.CopyrightMSSProvidedbyIHSunderlicensewithMSSNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,```,,,,````-`-`,,`,,`,`,,`---MSSSTANDARDPRACTICESP-611.SCOPE1.1ThisStandardPracticepertainstothefinishofgasketcontactfacesofpipeflangesandendflangesofvalvesandfittings.1.2ThisStandardPracticeisintendedforapplicationstoproductsforwhichASMEB16StandardsdonotcontaincompletefacingfinishrequirementsorforwhichtherearenosuchStandards.2.DEFINITIONS2.1RoughnessAverageThetermRa(Roughnessaverage)isexpressedinmicro-inches(μin)[micro-meters(μm)].2.2FlangeFacingFinishThesurfacefinishontheflangecontactface,seeFigure1,thatcomesincontactwithagasketuponflangeassembly.3.REQUIREMENTS3.1FlangefacingfinishshallbejudgedbyvisualcomparisonwithRastandards(seeASMEB46.1)andnotbyinstrumentshavingstylustracersandelectronicamplification.ThefinishesrequiredaregiveninTable1.Otherfinishesmaybefurnishedbyagreementbetweenpurchaserandmanufacturer.3.2Dimensionsshown(inTable1)shallnotbecauseforrejectionbydepthgagemeasurementorprecisioninstrumentmeasurements.4.LIMITATIONS4.1Surfacefinisheslistedarenotnecessarilyoptimumforallgaskettypesofmaterials.4.2Onflatfaces,serrationsneednotextendbeyondcorrespondingraisedfacediameter.STANDARDFINISHESFORCONTACTFACESOFPIPEFLANGESANDCONNECTINGENDFLANGESOFVALVESANDFITTINGSFIGURE1TypesofContactFacesforFlangesCopyrightMSSProvidedbyIHSunderlicensewithMSSNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,```,,,,````-`-`,,`,,`,`,,`---MSSSTANDARDPRACTICESP-62TABLE1StandardFinishesforContactFacesofPipeFlangesandConnecting-EndFlangesofValvesandFittingsTypeofContactFacesSteelDuctileIronGrayIronBronzeFlator1-16”(1.6mm)RaisedFaceandSerrated(a):spiralorconcentric,45to55perinch(18to21percm)recommended.Theresultantsurfacefinishshallhavea125to250µin(3.2to6.3µm)Ra.Non-serrated(b):250µin(6.3µm)Ramax.,orSerrated(a):spiralorconcentric,11to50perin.(5to19percm).Depthapprox.0.003to0.020in.(0.075to0.51mm)Non-serrated(b):250µin(6.3µm)Ramax.,orSerrated(a):spiral,11to50perin.(5to19percm)orconcentric,8ormoreperin.(4ormorepercm).Depthapprox.0.003to0.020in.(0.075to0.51mm)Non-serrated(b):125µin(3.2µm)Ramax.,orSerrated(a):spiralorconcentric,30to80perin.(12to31cm).Depthapprox.0.003to0.020in.(0.075to0.51mm).1/4”(6.4mm)RaisedandLargeMale&FemaleSmallMale&Female,Large&SmallTongue&GrooveSerrated(asabove)(a)orNon-serrated:125µin.(3.2µm)Ramax.RingJoint–SideWallsofGrooveNon-serrated:63µin.(1.6µm)Ramax.Non-serrated:63µin.(1.6µm)Ramax.NOTES:(a)Unlessotherwisespecified,themanufacturermaysupplyeitherspiralorconcentricgroovesforserrations.Thespiralmachiningoperationiscommonlyaccomplishedwiththecuttingtoolhaving0.06in.(1.6mm)orlargertipradius.(b)U