1、AN AMERICAN NATIONAL STANDARDForged Fittings, Socket-Welding and ThreadedASME B16.11-2005(Revision of ASME B16.11-2001)Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.11-2005(Revision of A
2、SME B16.11-2001)Forged Fittings,Socket-Weldingand ThreadedAN AMERICAN NATIONAL STANDARDThree Park Avenue New York, NY 10016Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Date of Issuance: December
3、 5, 2005The next edition of this Standard is scheduled for publication in 2010. There will be no addenda orwritten interpretations of the requirements of this Standard issued to this Edition.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was de
4、veloped 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 w
5、as 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 item, construction, proprietary device, or activity.ASME does not take any po
6、sition 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 assume any such liability. Users of a code or
7、 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
8、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 reproduce
9、d 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 2005 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Co
10、pyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CONTENTSForeword ivCommittee Roster . viCorrespondence With the B16 Committee vii1 Scope 12 Pressure Ratings 23 Size and Type . 24 Marking 35 Material
11、36 Dimensions . 37 Tolerances 78 Testing . 7Figures1 Method of Designating Outlets of Reducing Tees and Crosses 32 Welding Gap and Minimum Flat Dimensions for Socket-Welding Fittings 9Tables1 Types of Fittings by Class Designation and NPS Size Range . 12 Correlation of Fittings Class With Schedule N
12、umber or Wall Designation of Pipefor Calculation of Ratings 23 Nominal Wall Thickness of Schedule 160 and Double Extra Strong Pipe 24 Socket-Welding Fittings . 45 Forged Threaded Fittings . 56 Forged Threaded Fittings Street Elbows 67 Threaded Fittings . 78 Plugs and Bushings 8Mandatory AppendicesI
13、Inch Tables . 11II References 17Nonmandatory AppendixA Quality System Program 18iiiCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FOREWORDThe Sectional Committee on the Standardization of Pipe Fla
14、nges and Fittings, B16, organizedin 1920 under the procedure of the American Standards Association (ASA) appointed a subgroupof Subcommittee 3 (now Subcommittee F) to initiate the standardization of welding fittings inMay 1937. The first meeting of this group was held later that month, and at its me
15、eting inDecember 1938, in New York, it was agreed to undertake the standardization of dimensions ofsocket-welding fittings and to refer this project to a new drafting subgroup. One of the mostimportant dimensions of this type of fitting requiring standardization was considered to be thedimension fro
16、m the centerline of the fitting to the bottom of the socket, since from the standpointof the designing engineer, this dimension governs the location of adjacent pipe with referenceto the entire piping layout. Another important item for consideration was the welding filletdimensions.The drafting subg
17、roup held meetings in Chicago, Detroit, and New York in March 1939, andMay and October 1940, respectively, and at the last named meeting, the completed draft of theproposed standard was discussed, and further revisions were suggested. When applied to theSeptember 1940 draft, these changes produced t
18、he May 1941 draft, which was prepared fordistribution to industry for criticism and comment.This distribution resulted in a number of helpful comments. The members of the subgroupagreed by mail that many of the changes suggested should be incorporated in the revised draft(December 1941). Progress on
19、 the approval of the standard was delayed by the war, after which,a few more changes were added to make the proposal acceptable to all concerned. The reviseddraft (April 1946) was then submitted to the members of the sectional committee for letterballot vote.Following the approval of the sectional c
20、ommittee, the proposed standard was next approvedby the sponsor bodies and presented to the ASA with recommendation for approval as anAmerican Standard. This designation was given on December 9, 1946.In 1960, it was agreed that the standard needed a complete revision and simultaneously thatit should
21、 be expanded to cover threaded fittings and plugs, then covered by MSS SP-49 and SP-50. A Task Force worked diligently for four years before arriving at a draft that it felt wasacceptable. They also found that ratings were outdated and eliminated the 4000-lb classes ofthreaded fittings, assigned pre
22、ssure-temperature ratings for a number of materials, and convertedthe socket-weld fitting ratings to 3000 and 6000 lb. Following approval by the Sectional Committeeand Sponsors, ASA approval was granted on January 28, 1966.Following designation changes of ASA to ANSI and Sectional Committee to Stand
23、ards Commit-tee, Subcommittee 6 began consideration of changes in 1969. Early in 1972, changes in the pressureclass designations, materials, and clarification of wording were agreed upon and submitted forapproval. This approach was granted on June 20, 1973.The work of development of the 1980 edition
24、 of B16.11 began in 1975 when the committeebegan consideration of comments and proposals for change that were received. The developmentprocedure was arduous in that a number of ballots were taken which elicited many additionalcomments and counter proposals. The major changes included an expanded sco
25、pe for betterdefinition, requirements for conformance marking, a nonmandatory annex with provisions forproof or burst testing, and the inclusion of metric equivalents. Following approval by the StandardsCommittee and Co-Secretariat, final approval by ANSI was granted on October 6, 1980.In 1982, Amer
26、ican National Standards Committee B16 was reorganized as an ASME Committeeoperating under procedures accredited by ANSI. The 1991 edition of the standard, re-titled“Forged Fittings, Socket-Welding and Threaded,” incorporated forging material listed in Table1 of ASME B16.34-1988, including Group 3 ma
27、terial that was not previously covered in B16.11.The 1991 edition established U.S. Customary units as the standard. Other clarifying and editorialrevisions were made in order to improve the text. Following approval by the Standards Committeeand ASME, final approval by ANSI was granted on March 4, 19
28、91.ivCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-In 1996, metric dimensions were added as an independent but equal standard to the inch units.Following approval by the Standards Committee and A
29、SME, 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 Committee, ASME, and ANSI approved an addenda to this Standardto remove partial compliance fittings and n
30、onstandard material requirements. Due to an ASMEpolicy change concerning the publishing of addenda, the intended addenda changes have beenincorporated into this B16.11-2001 edition.Suggestions for improvement of this Standard are welcome. They should be addressed to theSecretary, ASME B16 Standards
31、Committee, Three Park Avenue, New York, NY 10016.The Committee incorporated threaded street elbow requirements into the standard starting in2004. Following approval by the Standards Committee and ASME, this revision to the 2001 editionwas approved as an American National Standard by ANSI on Septembe
32、r 30, 2005 with thedesignation ASME B16.11-2005.vCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16 COMMITTEEStandardization of Valves,Flanges, Fittings, and Gaskets(The following is the rost
33、er of the Committee at the time of approval of this Standard.)OFFICERSH. R. Sonderegger, ChairM. L. Nayyar, Vice ChairP. A. Reddington, SecretaryCOMMITTEE PERSONNELR. W. Barnes, Anric Enterprises, Inc.W. B. Bedesem, ExxonMobil Research and Engineering Co.M. A. Clark, Nibco, Inc.C. E. Floren, Mueller
34、 Co.D. R. Frikken, Becht Engineering Co.G. G. Grills, U.S. Coast GuardA. Hamilton, ABS AmericasM. L. Henderson, Forgital USAG. A. Jolly, Vogt Valves/FlowserveM. Katcher, Haynes InternationalR. Koester, Honorary MemberSUBCOMMITTEE FG. A. Jolly, Chair, Vogt Valves/FlowserveP. A. Reddington, Secretary,
35、 The American Society of MechanicalEngineersA. Appleton, Alloy Stainless Product Co., Inc.G. A. Cuccio, Capitol Manufacturing Co.J. P. Ellenberger, RetiredD. R. Frikken, Becht Engineering Co.viW. N. McLean, Newco ValvesT. A. McMahon, Fisher Controls International, Inc.M. L. Nayyar, Bechtel Power Cor
36、p.J. D. Page, U.S. Regulatory CommissionP. A. Reddington, The American Society of Mechanical EngineersR. A. Schmidt, Trinity-LadishH. R. Sonderegger, Anvil International, Inc.W. M. Stephan, Flexitallic LPT. F. Stroud, Ductile Iron Pipe Research AssociationR. E. White, Richard E. White however, theys
37、hould not 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 original request.ASME procedures provide for reconsideration of any interpretation when o
38、r 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,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity.Atte
39、nding 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.viiCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reprod
40、uction or networking permitted without license from IHS-,-,-viiiCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.11-2005FORGED FITTINGS, SOCKET-WELDING AND THREADED1 SCOPE1.1 GeneralThis St
41、andard covers ratings, dimensions, tolerances,marking, and material requirements for forged fittings,both socket-welding and threaded, as illustrated inTables 4 through 8 and Tables I-1 through I-5, inclusive.1.1.1 Fitting Types/Configuration. Types of fittingscovered by this Standard are shown in T
42、able 1, by classand size range. Fittings shown in Tables 4 through 8and Tables I-1 through I-5 may also 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
43、and purchaser.When such fittings meet all other stipulations of thisStandard, they shall be considered in compliance there-with, provided they are appropriately marked (seepara. 4).1.1.3 Quality Systems. Nonmandatory requirementsrelating to the product manufacturers Quality SystemProgram are describ
44、ed in Nonmandatory Appendix A.1.2 References1.2.1 Referenced Standards. Standards and specifica-tions adopted by reference in this Standard are shown inMandatory Appendix II, which is part of this Standard. Itis not considered practical to identify the specific editionof each standard and specificat
45、ion in the individual ref-erences. Instead, the specific edition reference is identi-fied in Mandatory Appendix II. A fitting made inTable 1 Types of Fittings by Class Designation and NPS Size RangeSocket-Welding ThreadedClass Designation Class DesignationDescription 3000 6000 9000 2000 3000 600045-
46、deg, 90-deg elbows,184182122184184184tees, crosses, coupling,184182122184184184half-coupling, and cap184182122 .184184184182122 .184184Street elbows . . . . . . . . . . . .182182Square, hex, round plug, . . . . . . . . .184 Note (1)hex, and flush bushing . . . . . . . . .184 Note (1)NOTE:(1) Plugs a
47、nd bushings are not identified by class designation. They may be used for ratings up throughClass 6000 designation.1conformance and conforming to this Standard, in allother respects, will be considered to be in conformanceto the Standard, even though the edition reference maybe changed in a subseque
48、nt addendum to or revisionof the Standard.1.2.2 Codes and Regulations. A fitting used underthe jurisdiction of the ASME Boiler and Pressure VesselCode, the ASME Code for Pressure Piping, or a govern-mental regulation is subject to any limitation of that codeor regulation. This includes any maximum t
49、emperaturelimitation, rule governing the use of a material at lowtemperature, or provisions for operation at a pressureexceeding the ratings in this Standard.1.3 Service ConditionsCriteria for selection of fitting types and materialssuitable for particular fluid service are not within thescope of this St
