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ASME_B16.49-2007.pdf
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ASME_B16 49 2007
ASME B16.49-2007(Revision of ASME B16.49-2000)Factory-Made,Wrought Steel,Buttwelding InductionBends forTransportation andDistribution SystemsAN AMERICAN NATIONAL STANDARDThe American Society of92Mechanical Engineerse with ASMENo reproduction or networking permitted without license from IHSNot for ResaleDate of Issuance:April 14,2008The next edition of this Standard is scheduled for publication in 2012.There will be no addendaissued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard.Interpretations are published on the ASME Web site under the Committee Pages athttp:/cstools.asme.org as they are issued.ASME is the registered trademark of The American 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 had an opportunity to participate.The proposed code or standard was madeavailable for public review and comment that provides an opportunity for additional public input from industry,academia,regulatory agencies,and the public-at-large.ASME does not approve,rate,or endorseany 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 mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assume 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 industry 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.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 10016-5990Copyright2o08byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.。with ASMENo roproduction or notworking permitled without liconso from IHSNot for RosaleCONTENTSivCommittee Roster.Correspondence With the B16 Committeevi1Scope and Definitions.12Pressure Ratings22SiZe,。,。,。,。,t,。t。t,t,。t。t。,t,ttt,tttt;,t,t。,。,4Marking25Material46Material for Bends Containing Welds41Chemical composition.5859Heat Treatment.810Quatification Bend.11Test Requirements.812Dimensional Requirements.913Inspection of Production Bends1014Certification.10SR15Supplementary Requirements.10Figures1Bend Dimensional Terms.32Test Specimen Locations and Orientations-Longitudinal Seam.63Test Specimen Locations and Orientations-Helical Seam.74Measurement of Bend Angle and Out-of-Squareness.11Tables1Tensile Properties42Maximum Limits of Chemical Elements That May Be Used4Limits on Essential Variables。4。Mandatory AppendixReferences.13Nonmandatory AppendicesAQuality System Program.14BInduction Bend Data Sheet.15进No roproduction or notworking permitled without liconso from IHSNot for RosaleFOREWORDIn 1993,members of the ASME B31.8 Code for Pressure Piping Gas-Transmission andDistribution Systems committee approached the B16 committee to develop a standard that coverspipeline bends produced by the induction bending process.Subcommittee F reviewed the request and identified that no current specification covered thisproduct to the satisfaction of the users.It was also determined that this Standard would needto be more performance based than most other B16 standards,which are normally productstandards with set dimensional requirements.At the 1994 meeting of Subcommittee F,the project to develop a standard was accepted.Through the cooperation of producers and users familiar with the process,and with approvalby the Standards Committee and ASME,ASME B16.49-2000 received approval as an AmericanNational Standard on April 25,2000.In 2005,the committee undertook a general review of this document.Based on the usage ofthis Standard over the last 5 years,a number of revisions,clarifications,and additions weredetermined to be needed to make the document more user friendly.Some requirements havebeen dropped,revised,and clarified to reflect the desires of the users and manufacturers.Thereference data has been updated and the interpretation section has been removed from theStandard.These revisions were incorporated into this B16.49-2007 edition.This revision was approved by the American National Standards Institute on October 12,2007.iNo roproduction or notworking permitled without liconso from IHSNot for Rosale

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