6-49_2012.pdf

AN AMERICAN NATIONAL STANDARD ASME B16.49-2012(Revision of ASME B16.49-2007)Factory-Made,Wrought Steel,Buttwelding Induction Bends for Transportation and Distribution SystemsCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.49-2012(Revision of ASME B16.49-2007)Factory-Made,Wrought Steel,Buttwelding InductionBends forTransportation andDistribution SystemsAN AMERICAN NATIONAL STANDARDThree Park 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:February 11,2013The next edition of this Standard is scheduled for publication in 2017.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard.Periodically certain actions of the ASME B16 Committee may be published as Cases.Cases and interpretations are published on the ASME Web site under the Committee Pages athttp:/cstools.asme.org/as they are issued,and will be published within the next edition of thestandard.Errata to codes and standards may be posted on the ASME Web site under the Committee Pages toprovide corrections to incorrectly published items,or to correct typographical or grammatical errorsin codes and standards.Such errata shall be used on the date posted.The Committee Pages can be found at http:/cstools.asme.org/.There is an option available toautomatically receive an e-mail notification when errata are posted to a particular code or standard.ThisoptioncanbefoundontheappropriateCommitteePageafterselecting“Errata”inthe“PublicationInformation”section.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 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,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 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 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 10016-5990Copyright 2013 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll 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.ivCommittee Roster.vCorrespondence With the B16 Committee.viSummary of Changes.vii1Scope and Definitions.12Pressure Ratings.23Size.24Marking.25Material.46Material for Bends Containing Welds.47Chemical Composition.58Material Properties.59Heat Treatment.810Qualification Bend.811Test Requirements.812Dimensional Requirements.913Inspection of Production Bends.1014Certification.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 Properties.42Maximum Limits of Chemical Elements That May Be Used.43Limits on Essential Variables.8Mandatory AppendixIReferences.13Nonmandatory AppendicesAQuality System Program.14BInduction Bend Data Sheet.15iiiCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-FOREWORDIn 1993,members of the ASME B31.8 Code for Pressure Piping,Gas Transmis