ASME_B16.20a-2000.pdf

STD.ASME B1b.20A-ENGL 2000 0759670 061767b T37AN AMERICAN NATIONAL STANDARDASME B16.20a-2000ADDENDAtoASME B16.20-1998METALLIC GASKETS FOR PIPE FLANGESRing-Joint,Spiral-Wound,and JacketedTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSThree Park Avenue New York,NY 10016undoASMEe7O80omarrlseo9efmma1ae500101n08a020422821G0pa303-397.2295STD.ASME B1620A-ENGL200007596700b17b77973Date of Issuance:July 21.2000ASME is the registered trademark of The American Society of Mechanical EngineersThis code or standard was developed under procedures accredited as meeting the criteria forAmerican National Standards.The Standards Committee that approved the code or standardwas balanced to assure that individuals from competent and concerned interests have had anopportunity to participate.The proposed code or standard was made available for public reviewand comment that provides an opportunity for additional public input from industry,academia.regulatory agencies,and the public-at-largeASME does not approve,rate,or endorseany item,construction,proprietary deviceor activity.ASME does not take any position with respect to the validity of any patent rights asserted inconnection with any items mentioned in this document,and does not undertake to insure anyoneutilizing a standard against liability for infringement of any applicable letters patent,nor assumeany such liability.Users of a code or standard are expressly advised that determination of thevalidity of any such patent rights,and the risk of infringement of such rights,is entirely theirown responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not tobe interpreted as government or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued inaccordance with the established ASME procedures and policies,which precludes the issuanceof 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 2000 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll Rights ReservedPrinted in U.S.A.s7007n0raHs5ena5m19e5o0o1g0204212921cpal303-3g7295nboth6m0sagePa0calhe0oamentPggy2STD.ASME B1b.20A-ENGL20000759b70061767880TASME B16.20a-2000Following approval by the ASME B16 Committee and ASME,and after public review.ASME B16.20a-2000 was approved by the American National Standards Institute on May 3.2000.Addenda to the 1998 edition of ASME B16.20 are issued in the form of replacement pages.Revisions,additions,and deletions are incorporated directly into the affected pages.It is advisable,however,that thispage.the Addenda title and copyright pages,and all replaced pages be retained for reference.SUMMARY OF CHANGESThis is the first Addenda to be published to ASME B16.20-1998Replace or insert the pages listed.Changes given below are identified on the pages by a margin note,(a).placed next to the affected area.The pages not listed are the reverse sides of the listed pages and containno changes.PageLocationChangeCommittee RosterUpdated to reflect AddendaxiContentsUpdated to reflect Addenda2,2.1Paragraph 3.2.5Revised21Table 12Notes(1)and(3)revised23Table 14General Note(c)and Notes(1)and(2)revised24Table 15(1)Title revised(2)General Notes added28Table 19Revised35Mandatory Annex IRevisedSTD.ASME B16.20A-EN6L200007596700b17b8046BCONTENTS(a)F0rew0di计Committee Roster.Correspondence With the B16 Committee.viiImportant Information Concerning Use of Asbestos or Alternative Materials.1Scope.12 Ring-Joint Gaskets.13 Spiral-Wound Gaskets.24 Jacketed Gaskets.3TablesI Maximum Hardness for Ring Gaskets.2 Ring Gasket Markings.23 Type R Ring Gasket Dimensions and Tolerances.44 Pipe Sizes for Type R Ring Gaskets Suitable for Referenced Standards.75 Type RX Ring Gasket Dimensions and Tolerances4.444。g4g4g。ggg。g。106 Pipe Sizes for Type RX Ring Gaskets Suitable for Referenced Standards127 Type BX Ring Gasket Dimensions and Tolerances.138 Pipe Sizes for Type BX Ring Gaskets Suitable for Referenced Standards。149Dimensions for Spiral-Wound Gaskets Used With ASME B16.5 Flanges.1610Dimensions for Spiral-Wound Gaskets Used With ASME B16.47 Series A Flanges1811 Dimensions for Spiral-Wound Gaskets Used With ASME B16.47 Series B Flanges2012Inner-Ring Inside Diameters for Spiral-Wound Gaskets.2113Inner-Ring Inside Diameters for Spiral-Wound Gaskets Used Between ASMEB16.47 Series A Flanges.2214 Inner-Ring Inside Diameters for Spiral-Wound Gaskets Used Between ASMEB16.47 Series B Flanges.2315Minimum Pipe Wall Thickness Suitable for Use of Spiral-Wound Gaskets WithInner Rings for ASME B16.5 Flanges.2416 Maximum Bore of ASME B16.5 Flanges for Use With Spiral-Wound Gaskets.2517 Maximum Bore of ASME B16.47 Series A Flanges for Use WithSpiral-Wound Gaskets.2618 Maximum Bore of ASME B16.47 Series B Flanges for Use WithSpiral-Wound Gaskets.2719 Color Coding and Abbreviations for Spiral-Wound Gasket Materials.2820Example Markings for Spiral-Wound Gaskets.2921Jacketed Gasket Dimensions for ASME B16.5 Flanges.3022Jacketed Gasket Dimensions for ASME B16.47 Series A Flanges.3123 Jacketed Gasket Dimensions for ASME B16.47 Series B Flanges3224Abbreviations for Identifying Materials for Jacketed Gaskets.3325Example Markings for Jacketed Gaskets.3xiGr0upM303397-2295this message:ploase c