1、AN AMERICAN NATIONAL STANDARDASME B16.11-2011(Revision of ASME B16.11-2009)Forged Fittings, Socket-Welding and ThreadedCopyright 2012 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyright 2012 by the American Society o
2、f Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cASME B16.11-2011(Revision of ASME B16.11-2009)Forged Fittings,Socket-Weldingand ThreadedAN AMERICAN NATIONAL STANDARDThree Park Avenue New York, NY 10016 USACopyright 2012 by the American Society of
3、Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cDate of Issuance: January 30, 2012The next edition of this Standard is scheduled for publication in 2016.ASME issues written replies to inquiries concerning interpretations of technical aspects of this
4、Standard. 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
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7、 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 interes
8、ts have had an opportunity to participate. The proposed code or standard was madeavailable for public review and comment that provides an opportunity for additional public input from industry, academia,regulatory agencies, and the public-at-large.ASME does not “approve,” “rate,” or “endorse” any ite
9、m, 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 ap
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11、r 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
12、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 2012 byTHE AME
13、RICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright 2012 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCONTENTSForeword ivCommittee Roster viCorrespondence With the B16 Committee . viiSumma
14、ry of Changes viii1 Scope and General 12 Pressure Ratings 13 Size and Type 74 Marking 85 Material 86 Dimensions . 87 Additional Tolerances . 98 Proof Testing . 9Figures1 Method of Designating Outlets of Reducing Tees and Crosses . 82 Welding Gap and Minimum Flat Dimensions for Socket-Welding Fitting
15、s 9Tables1 Socket-Welding Fittings 22 Forged Threaded Fittings . 33 Forged Threaded Fittings Street Elbows 44 Threaded Fittings 55 Plugs and Bushings 66 Types of Fittings by Class Designation and NPS Size Range . 77 Correlation of Fittings Class With Schedule Number or Wall Designation ofPipe for Ca
16、lculation of Ratings . 78 Nominal Wall Thickness of Schedule 160 and Double Extra Strong Pipe 7Mandatory AppendicesI Dimensions of Fittings in U.S. Customary Units . 11II References . 17Nonmandatory AppendixA Quality System Program . 18iiiCopyright 2012 by the American Society of Mechanical Engineer
17、s.No reproduction may be made of this material without written consent of ASME.cFOREWORDThe Sectional Committee on the Standardization of Pipe Flanges and Fittings, B16, organizedin 1920 under the procedure of the American Standards Association (ASA), appointed a subgroupof Subcommittee 3 (now Subco
18、mmittee F) to initiate the standardization of welding fittings inMay 1937. The first meeting of this group was held later that month, and at its meeting inDecember 1938, in New York, it was agreed to undertake the standardization of dimensions ofsocket-welding fittings and to refer this project to a
19、 new drafting subgroup. One of the mostimportant dimensions of this type of fitting requiring standardization was considered to be thedimension from the centerline of the fitting to the bottom of the socket, since from the standpointof the designing engineer, this dimension governs the location of a
20、djacent pipe with referenceto the entire piping layout. Another important item for consideration was the welding filletdimensions.The drafting subgroup held meetings in Chicago, Detroit, and New York in March 1939 andMay and October 1940, respectively, and at the last named meeting, the completed dr
21、aft of theproposed standard was discussed, and further revisions were suggested. When applied to theSeptember 1940 draft, these changes produced the May 1941 draft, which was prepared fordistribution to industry for criticism and comment.This distribution resulted in a number of helpful comments. Th
22、e members of the subgroupagreed by mail that many of the changes suggested should be incorporated in the revised draft(December 1941). Progress on the approval of the standard was delayed by the World War II,after which, a few more changes were added to make the proposal acceptable to all concerned.
23、The revised draft (April 1946) was then submitted to the members of the sectional committeefor letter ballot vote.Following the approval of the sectional committee, the proposed standard was next approvedby the sponsor bodies and presented to the ASA with recommendation for approval as anAmerican St
24、andard. This designation was given on December 9, 1946.In 1960, it was agreed that the standard needed a complete revision and simultaneously thatit should be expanded to cover threaded fittings and plugs, then covered by MSS SP-49 andSP-50. A Task Force worked diligently for four years before arriv
25、ing at a draft that was acceptable.They also found that ratings were outdated and eliminated the 4,000-lb classes of threaded fittings,assigned pressuretemperature ratings for a number of materials, and converted the socket-weldfitting ratings to 3,000 and 6,000 lb. Following approval by the Section
26、al Committee and Sponsors,ASA approval was granted on January 28, 1966.Following designation changes of ASA to ANSI and Sectional Committee to StandardsCommittee, Subcommittee 6 began consideration of changes in 1969. Early in 1972, changes inthe pressure class designations, materials, and clarifica
27、tion of wording were agreed upon andsubmitted for approval. This was granted on June 20, 1973.The work of development of the 1980 edition of B16.11 began in 1975 when the committeebegan consideration of comments and proposals for change that were received. The developmentprocedure was arduous in tha
28、t a number of ballots were taken that elicited many additionalcomments and counterproposals. The major changes included an expanded scope for betterdefinition, requirements for conformance marking, a Nonmandatory Annex with provisions forprooforbursttesting,andtheinclusionofmetricequivalents.Followi
29、ngapprovalbytheStandardsCommittee and Co-Secretariat, final approval by ANSI was granted on October 6, 1980.In 1982, American National Standards Committee B16 was reorganized as an ASME Committeeoperating under procedures accredited by ANSI. The 1991 edition of the standard, retitled “ForgedFittings
30、, Socket-Welding and Threaded,” incorporated forging material listed in Table 1 ofASME B16.34-1988, including Group 3 material that was not previously covered in B16.11. The1991 edition established U.S. Customary units as the standard. Other clarifying and editorialrevisions were made to improve the
31、 text. Following approval by the Standards Committee andASME, final approval by ANSI was granted on March 4, 1991.ivCopyright 2012 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cIn 1996, metric dimensions were added as an
32、 independent but equal standard to the inch units.Following approval by the Standards Committee and ASME, this revision to the 1991 edition ofthis Standard was approved as an American National Standard by ANSI on December 16, 1996,with the new designation ASME B16.11-1996.In 2000, the Standards Comm
33、ittee, ASME, and ANSI approved an addenda to this Standardto remove partial compliance fittings and nonstandard material requirements. Due to an ASMEpolicy change concerning the publishing of addenda, the intended addenda changes were incorpo-rated into the 2001 edition.Threaded end street elbow req
34、uirements were incorporated into the 2004 edition. Followingapproval by the Standards Committee and ASME, the revision to the 2001 edition was approvedas an American National Standard by ANSI on September 30, 2005 with the designationASME B16.11-2005.A number of technical revisions were made along w
35、ith format and reference revisions, suchas material marking requirements. Following approval by the Standards Committee and ASME,the revision to the 2005 edition was approved as an American National Standard by ANSI onJuly 9, 2009 with the designation ASME B16.11-2009.This revision was approved by t
36、he American National Standards Institute on December 2, 2011.Suggestions for improvement of this Standard are welcome. They should be addressed to theSecretary, B16 Standards Committee, The American Society of Mechanical Engineers, Three ParkAvenue, New York, NY 10016.vCopyright 2012 by the American
37、 Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cASME B16 COMMITTEEStandardization of Valves,Flanges, Fittings, and Gaskets(The following is the roster of the Committee at the time of approval of this Standard.)STANDARDS COMMITTEE OFFICER
38、SW. B. Bedesem, ChairG. A. Jolly, Vice ChairD. R. Sharp, SecretarySTANDARDS COMMITTEE PERSONNELA. Appleton, Alloy Stainless Products Co., Inc.R. W. Barnes, Anric Enterprises, Inc.W. B. Bedesem, ConsultantR. M. Bojarczuk, ExxonMobil Research and Engineering Co.D. F. Buccicone, Elkhart Products Corp.A
39、. M. Cheta, Royal Dutch ShellM. A. Clark, Nibco, Inc.G. A. Cuccio, Capitol Manufacturing Co.C. E. Davila, Crane EnergyD. R. Frikken, Becht Engineering Co.R. P. Griffiths, U.S. Coast GuardSUBCOMMITTEEFSTEEL THREADED AND WELDING FITTINGSG. A. Cuccio, Chair, Capitol Manufacturing Co.G. A. Jolly, Vice C
40、hair, Vogt Valves/Flowserve Corp.D. R. Sharp, Secretary, The American Society of MechanicalEngineersA. Appleton, Alloy Stainless Products Co., Inc.W. J. Birkholz, Flowline Division, Markovitz Enterprises, Inc.K. W. Doughty, Shaw Alloy Piping Products, Inc.J. P. Ellenberger, ConsultantviG. A. Jolly,
41、Vogt Valves/Flowserve Corp.M. Katcher, Haynes InternationalW. N. McLean, B however, they shouldnot contain proprietary names or information.Requests that are not in this format will be rewritten in this format by the Committee priorto being answered, which may inadvertently change the intent of the
42、original request.ASME procedures provide for reconsideration of any interpretation when or if additionalinformation that might affect an interpretation is available. Further, persons aggrieved by aninterpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not“approve,” “ce
43、rtify,” “rate,” or “endorse” any item, construction, proprietary device, or activity.Attending Committee Meetings. The B16 Standards Committee regularly holds meetings, whichare open to the public. Persons wishing to attend any meeting should contact the Secretary ofthe B16 Standards Committee.viiCo
44、pyright 2012 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cASME B16.11-2011SUMMARY OF CHANGESFollowing approval by the ASME B16 Committee and ASME, and after public review,ASME B16.11-2011 was approved by the American Na
45、tional Standards Institute onDecember 2, 2011.ASME B16.11-2011 includes the following changes identified by a margin note, (11).Page Location Change6 Table 5 Fourth and seventh columns revised,Note (2) added9 6.3.3 Revised6.5 Revised16 Table I-5 Note (2) addedviiiCopyright 2012 by the American Socie
46、ty of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cASME B16.11-2011FORGED FITTINGS, SOCKET-WELDING AND THREADED1 SCOPE AND GENERAL1.1 ScopeThis Standard covers ratings, dimensions, tolerances,marking, and material requirements for forged fittings
47、,both socket-welding and threaded, as illustrated inTables 1 through 5 and Tables I-1 through I-5, inclusive.1.1.1 Fitting Types/Configuration. Types of fittingscovered by this Standard are shown in Table 6, by classand size range. Fittings shown in Tables 1 through 5and Tables I-1 through I-5 may a
48、lso be made with combi-nations of socket-welding and threaded ends.1.1.2 Special Fittings. Fittings with special dimen-sions, threads, or counterbores may be made byagreement between the manufacturer and purchaser.When such fittings meet all other stipulations of thisStandard, they shall be consider
49、ed in compliance there-with, provided they are appropriately marked (seesection 4).1.1.3 Welding. Installation welding requirementsare not within the scope of this Standard. Installationwelding shall be in accordance with the applicable pip-ing Code or regulation covering the piping system intowhich the fittings are installed.1.2 General1.2.1 Referenced Standards. Standards and specifi-cations adopted by reference in this Standard are shownin Mandatory Appendix II. It is not considered practicalto identify the specific edition of each standard andspecification in the individual ref
