1、Large DiameterSteel FlangesNPS 26 Through NPS 60 Metric/Inch StandardAN AM E R IC A N NAT IO NAL STANDARDASME B16.47-2020(Revision of ASME B16.47-2017)ASME B16.47-2020(Revision of ASME B16.47-2017)Large DiameterSteel FlangesxNPS 26 Through NPS 60Metric/Inch StandardAN AMERICAN NATIONAL STANDARDxDate
2、 of Issuance:January 29,2021The next edition of this Standard is scheduled for publication in 2024.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard.Periodically certainactionsoftheASMEB16CommitteemaybepublishedasCases.Casesandinterpretationsar
3、epublishedontheASMEwebsiteunder the Committee Pages at http:/cstools.asme.org/as they are issued.Errata to codes and standards may be posted on the ASME website under the Committee Pages to provide corrections toincorrectlypublisheditems,ortocorrecttypographicalorgrammaticalerrorsincodesandstandards
4、.Sucherratashallbeusedon the date posted.TheCommitteePagescanbefoundathttp:/cstools.asme.org/.Thereisanoptionavailabletoautomaticallyreceiveane-mailnotification when errata are posted to a particular code or standard.This option can be found on the appropriate CommitteePage after selecting“Errata”in
5、 the“Publication Information”section.ASME is the registered trademark of The American Society of Mechanical Engineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindiv
6、idualsfromcompetentandconcernedinterestshavehadanopportunityto participate.The proposed codeorstandardwasmadeavailable forpublic reviewandcommentthatprovidesanopportunityfor additional public input from industry,academia,regulatory agencies,and the public-at-large.ASME does not“approve,”“rate,”or“en
7、dorse”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 any items mentioned in thisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicab
8、leletterspatent,norassumeanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtherisk of infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry
9、is not to be interpreted as government or industryendorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME proceduresand policies,which precludes the issuance of interpretations by individuals.No p
10、art 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 2021 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll r
11、ights reservedPrinted in U.S.A.CONTENTSForeword.viCommittee Roster.viiCorrespondence With the B16 Committee.viiiSummary of Changes.xList of Changes in Record Number Order.xii1General.12PressureTemperature Ratings.23Component Size:Nominal Pipe Size.34Marking.35Materials.46Dimensions.57Tolerances.68Pr
12、essure Testing.7Mandatory AppendixIReferences.113Nonmandatory AppendicesAMethods Used for Establishing PressureTemperature Ratings.115BGaskets(Other Than Ring-Joint).119CQuality System Program.121DMethod for Calculating Bolt Lengths.122Figures1Welding Ends(Welding Neck Flanges,No Backing Rings).82We
13、lding Ends(Welding Neck Flanges With Backing Rings).93Welding Ends(Welding Neck Flanges).10D-1Specified Stud Bolt Length.123Tables1List of Material Specifications.112List of Bolting Specifications(Applicable ASTM Specifications).133PressureTemperature Ratings for Group 1.1 Materials.143CPressureTemp
14、erature Ratings for Group 1.1 Materials.154PressureTemperature Ratings for Group 1.2 Materials.164CPressureTemperature Ratings for Group 1.2 Materials.175PressureTemperature Ratings for Group 1.3 Materials.185CPressureTemperature Ratings for Group 1.3 Materials.19iii6PressureTemperature Ratings for
15、Group 1.4 Materials.206CPressureTemperature Ratings for Group 1.4 Materials.217PressureTemperature Ratings for Group 1.5 Materials.227CPressureTemperature Ratings for Group 1.5 Materials.238PressureTemperature Ratings for Group 1.7 Materials.248CPressureTemperature Ratings for Group 1.7 Materials.25
16、9PressureTemperature Ratings for Group 1.9 Materials.269CPressureTemperature Ratings for Group 1.9 Materials.2710PressureTemperature Ratings for Group 1.10 Materials.2810CPressureTemperature Ratings for Group 1.10 Materials.2911PressureTemperature Ratings for Group 1.11 Materials.3011CPressureTemperature Ratings for Group 1.11 Materials.3112PressureTemperature Ratings for Group 1.13 Materials.3212CPressureTemperature Ratings for Group 1.13 Materials.3313PressureTemperature Ratings for Group 1.14
