1、AN AMERICAN NATIO NAL STANDARDASME B16.12-2009Revision of ASME B16.12-1998(R2006)Cast Iron Threaded Drainage FittingsCopyright 2009 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford
2、University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME B16.12-2009Revision of ASME B16.12-1998(R2006)Cast IronThreadedDrainageFittingsAN AMERICAN NATIONAL STANDARDCopyright 2009 by t
3、he American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is perm
4、itted.Uncontrolled when printed.Date of Issuance:August 14,2009The next edition of this Standard is scheduled for publication in 2014.There will be no addendaissued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard.Interpretation
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6、ndards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional
7、 publicinput from industry,academia,regulatory agencies,and the public-at-large.ASME does not“approve,”“rate,”or“endorse”any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with anyitems mention
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11、lisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2009 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright 2009 by the American Society of Mechanical Engineers.No reproduction may be made of this material with
12、out written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.ivCommittee Roster.viCorrespondence With the
13、 B16 Committee.vii1Scope and General.12Size.13Marking.24Materials.25Dimensions and Tolerances.26Threading.27Ribs.38Coatings.39Face Bevel.3Figures1Identification of Reducing Fittings.22Types of Fittings Tapped to Provide 21 mm/m(0.25 in./ft)Pitch.12Tables1Inspection Limits for Diameter and Width of B
14、and.12Inspection Limits for Center-to-End Dimensions.13Wall Thickness and Threaded End Dimensions.44Center-to-End Dimensions of Elbows.55Dimensions of Tees,Crosses,and Y-Branches.66Dimensions of Y-Branches(Reducing Sizes).77Dimensions of 45-deg Y-Branches.88Dimensions of 45-deg Y-Branches(Reducing S
15、izes).89Dimensions of Couplings.910Dimensions of Increasers.911Dimensions of Offsets.912Dimensions of Tucker Connections,Roof Connections,and Tucker Y-Branches.1013Dimensions of P-Traps,Bath P-Traps,and Running Traps.11Mandatory AppendicesIReferences.13IIDimensions of Fittings in U.S.Customary Units
16、.14Nonmandatory AppendicesAQuality System Program.23BDimensions of Welded and Seamless Steel Pipe(ASME B36.10M).24iiiCopyright 2009 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORDScrew joint drainage fit
