1、AN AMERICAN NATIO NAL STANDARDASME B31.9-2011(Revision of ASME B31.9-2008)BuildingServices PipingASME Code for Pressure Piping,B31Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-/:#:$#:$:#*$:Copyr
2、ight ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-/:#:$#:$:#*$:ASME B31.9-2011(Revision of ASME B31.9-2008)BuildingServices PipingASME Code for Pressure Piping,B31AN AMERICAN NATIONAL STANDARDThree Park
3、Avenue New York,NY 10016 USACopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-/:#:$#:$:#*$:Date of Issuance:May 31,2011The next edition of this Code is scheduled for publication in 2014.This Code wi
4、ll become effective6 months after the Date of Issuance.There will be no addenda issued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Code.The interpretations are included with this edition.ASME is the registered trademark of The Amer
5、ican Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have ha
6、d an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput from industry,academia,regulatory agencies,and the public-at-large.ASME does not“approve,”“rate,”or“endorse”any item,construction,propriet
7、ary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor
8、 assumes any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with indus
9、try is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.
10、No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2011 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEER
11、SAll rights reservedPrinted in U.S.A.Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-/:#:$#:$:#*$:CONTENTSForeword.vCommittee Roster.viIntroduction.viiiSummary of Changes.xChapter IScope and Defin
12、itions.1900General.1Chapter IIDesign.9Part 1Conditions and Criteria.9901Design Conditions.9902Design Criteria.9Part 2Pressure Design of Piping Components.11903Criteria for Pressure Design of Piping Components.11904Pressure Design of Components.11Part 3Selection and Limitation of Components.14905Pipe
13、.14906Fittings,Bends,and Intersections.15907Valves.15908Flanges,Blanks,Gaskets,and Bolting.15Part 4Selection and Limitation of Joints.15910Piping Joints.15911Welded Joints.15912Flanged Joints.16913Mechanical and Proprietary Joints.16914Threaded Joints.16915Flared,Flareless,and Compression Joints.169
14、16Bell and Spigot Joints.16917Brazed and Soldered Joints.16Part 5Expansion,Flexibility,and Support.17919Expansion and Flexibility.17920Loads on Pipe-Supporting Elements.20921Design of Pipe-Supporting Elements.21Part 6Systems.25922Design Requirements Pertaining to Specific Piping Systems.25Chapter II
15、IMaterials.26923Materials General Requirements.26Chapter IVComponent Requirements and Standard Practices.28926Dimensions and Ratings of Components.28Chapter VFabrication,Assembly,and Erection.34927Welded Fabrication of Metals.34928Brazing and Soldering of Metals.39929Bending.40930Forming.40931Heat T
16、reatment.40934Fabrication of Nonmetals.40935Assembly.41iiiCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-/:#:$#:$:#*$:Chapter VIInspection,Examination,and Testing.43936Inspection and Examination.43937Leak Testing.44Figures900.1.2Code Jurisdictional Limits for Piping Drum Type Boilers.2904.2.2Nomenclature for Miter Joints.12921.1.3-1Support Spans for Standard Wall Steel Pipe.22921.1.3-2Support
