16-5_2013.pdf

Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24 Metric/Inch StandardAN AM E R IC AN NAT IO NAL STANDARDASME B16.5-2013(Revision of ASME B16.5-2009)Copyright 2013 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyright 2013 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cASME B16.5-2013(Revision of ASME B16.5-2009)Pipe Flanges andFlanged FittingsNPS12Through NPS 24Metric/Inch StandardAN AMERICAN NATIONAL STANDARDTwo Park Avenue New York,NY 10016 USACopyright 2013 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cDate of Issuance:April 29,2013The next edition of this Standard is scheduled for publication in 2015.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.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 errors in codes andstandards.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 EngineersTwo Park Avenue,New York,NY 10016 5990Copyright 2013 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright 2013 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCONTENTSForeword.viCommittee Roster.ixCorrespondence With the B16 Committee.xSummary of Changes.xi1Scope.12PressureTemperature Ratings.23Component Size.34Marking.35Materials.76Dimensions.97Tolerances.138Pressure Testing.14Figures1Bevel for Outside Thickness.152Bevel for Inside Thickness.153Bevel for Combined Thickness.154Straight Hub Welding Flanges.155Method of Designating Outlets of Reducing Fittings in Specifications.166End Flange Facings and Their Relationship to Flange Thickness andCenter-to-End and End-to-End Dimensions.177Bevel for Wall Thicknesses t From 5 mm to 22 mm Inclusive.198Bevel for Wall Thicknesses t Greater Than 22 mm.199Inside Contour for Use With Rectangular Backing Ring.2010Inside Contour for Use With Taper Backing Ring.2011Thread Length for Connection Tapping.2112Socket Welding for Connections.2113Bosses for Connections.2114Butt Welding for Connections.2115Method of Designating Location of Auxiliary Connections WhenSpecified.22Tables1AList of Material Specifications.41BList of Bolting Specifications Applicable ASTM Specifications.81CFlange Bolting Dimensional Recommendations.122-1.1PressureTemperature Ratings for Group 1.1 Materials.232-1.2PressureTemperature Ratings for Group 1.2 Materials.242-1.3PressureTemperature Ratings for Group 1.3 Materials.252-1.4PressureTemperature Ratings for Group 1.4 Materia