1、Factory-Made,Wrought Steel,Buttwelding Induction Bends for Transportation and Distribution Systems AN AMERIC AN NATIO NAL STANDARDASME B16.49-2007(Revision of ASME B16.49-2000)Copyright 2008 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written
2、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.ASME B16.49-2007(Revision of ASME B16.49-2000)Factory-Made,Wrought Steel,
3、Buttwelding InductionBends forTransportation andDistribution SystemsAN AMERICAN NATIONAL STANDARDThree Park Avenue New York,NY 10016Copyright 2008 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licens
4、ed 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.Date of Issuance:April 14,2008The next edition of this Standard is scheduled for publication in 2012.There will be no
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11、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 2008 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEER
12、SAll rights reservedPrinted in U.S.A.Copyright 2008 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 Univers
13、ity User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.ivCommittee Roster.vCorrespondence With the B16 Committee.vi1Scope and Definitions.12Pressure Ratings.23Size.24Marking.25Material.46Material for Bends Containing Welds.47Chemical Composition.58Ma
14、terial 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
15、 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 B
16、end Data Sheet.15iiiCopyright 2008 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.FOREWORDIn 1993,members of the ASME B31.8 Code for Pressure Piping Gas Transmission andDistribution Systems committee approached
