1、Refrigeration Piping andHeat Transfer ComponentsASME Code for Pressure Piping,B31AN INTE R NAT IO NAL PIPING CO D EASME B31.5-2019(Revision of ASME B31.5-2016)ASME B31.5-2019(Revision of ASME B31.5-2016)RefrigerationPiping andHeat TransferComponentsASME Code for Pressure Piping,B31AN INTERNATIONAL P
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12、e,New York,NY 10016-5990Copyright 2020 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword.viCommittee Roster.viiCorrespondence With the B31 Committee.ixIntroduction.xiSummary of Changes.xiiiChapter IScope and Definitions.1500General Statements.1Chapter
13、 IIDesign.10Part 1Conditions and Criteria.10501Design Conditions.10502Design Criteria.11Part 2Design of Piping Components.23503Criteria for Design of Piping Components.23504Pressure Design of Piping Components.23Part 3Design Application of Piping Components Selection and Limitations.33505Pipe.33506F
14、ittings,Bends,and Intersections.34507Valves.34508Flanges,Blanks,Flange Facings,Gaskets,and Bolting.34Part 4Selection and Limitations of Piping Joints.35510Piping Joints.35511Welded Joints.35512Flanged Joints.35513Expanded Joints.35514Threaded Joints.35515Flared,Flareless,and Compression Joints.36517
15、Brazed and Soldered Joints.36518Sleeve Coupled and Other Novel or Patented Joints.36Part 5Expansion,Flexibility,Structural Attachments,Supports,and Restraints.36519Expansion and Flexibility.36520Design of Pipe Supporting Elements.46521Design Loads for Pipe Supporting Elements.47Chapter IIIMaterials.
16、49523Materials General Requirements.49524Materials Applied to Miscellaneous Parts.55Chapter IVDimensional Requirements.56526Dimensional Requirements for Standard and Nonstandard Piping Components.56Chapter VFabrication and Assembly.59iii527Welding.59528Brazing and Soldering.66529Bending Hot and Cold.68530Forming.69531Heat Treatment.69535Assembly.70Chapter VIExamination,Inspection,and Testing.75536Examination.75537Inspection.77538Testing.77539Records.78Mandatory AppendixIReferenced Standards.79No