1、A N A M E R I C A N N A T I O N A L S T A N D A R DASME B16.11-2009 (Revision of ASME B16.11-2005) Forged Fittings, Socket-Welding and ThreadedASME B16.11-2009 (Revision of ASME B16.11-2005) Forged Fittings, Socket-Welding and Threaded AN AMERICAN NATIONAL STANDARDDate of Issuance: August 14, 2009 T
2、he next edition of this Standard is scheduled for publication in 2014. There will be no addenda issued to this edition. ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. Interpretations and items approved as errata to this edition are publishe
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4、e Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional p
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9、r written permission of the publisher. The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990 Copyright 2009 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All rights reserved Printed in U.S.A.CONTENTS Foreword iv Committee Roster vi Correspondence With the B16 Comm
10、ittee . vii 1 Scope and General 1 2 Pressure Ratings 1 3 Size and Type 7 4 Marking 8 5 Material 8 6 Dimensions . 8 7 Additional Tolerances . 9 8 Proof Testing . 9 Figures 1 Method of Designating Outlets of Reducing Tees and Crosses . 8 2 Welding Gap and Minimum Flat Dimensions for Socket-Welding Fit
11、tings 9 Tables 1 Socket-Welding Fittings 2 2 Forged Threaded Fittings . 3 3 Forged Threaded Fittings Street Elbows 4 4 Threaded Fittings 5 5 Plugs and Bushings 6 6 Types of Fittings by Class Designation and NPS Size Range . 7 7 Correlation of Fittings Class With Schedule Number or Wall Designation o
12、f Pipe for Calculation of Ratings . 7 8 Nominal Wall Thickness of Schedule 160 and Double Extra Strong Pipe 7 Mandatory Appendices I Inch Tables . 11 II References . 17 Nonmandatory Appendix A Quality System Program . 18 iiiFOREWORD The Sectional Committee on the Standardization of Pipe Flanges and
13、Fittings, B16, organized in 1920 under the procedure of the American Standards Association (ASA) appointed a subgroup of Subcommittee 3 (now Subcommittee F) to initiate the standardization of welding fittings in May 1937. The first meeting of this group was held later that month, and at its meeting
14、in December 1938, in New York, it was agreed to undertake the standardization of dimensions of socket-welding fittings and to refer this project to a new drafting subgroup. One of the most important dimensions of this type of fitting requiring standardization was considered to be the dimension from
15、the centerline of the fitting to the bottom of the socket, since from the standpoint of the designing engineer, this dimension governs the location of adjacent pipe with reference to the entire piping layout. Another important item for consideration was the welding fillet dimensions. The drafting su
16、bgroup held meetings in Chicago, Detroit, and New York in March 1939 and May and October 1940, respectively, and at the last named meeting, the completed draft of the proposed standard was discussed, and further revisions were suggested. When applied to the September 1940 draft, these changes produc
17、ed the May 1941 draft, which was prepared for distribution to industry for criticism and comment. This distribution resulted in a number of helpful comments. The members of the subgroup agreed by mail that many of the changes suggested should be incorporated in the revised draft (December 1941). Pro
18、gress on 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 revised draft (April 1946) was then submitted to the members of the sectional committee for letter ballot vote. Following the approval of the
19、 sectional committee, the proposed standard was next approved by the sponsor bodies and presented to the ASA with recommendation for approval as an American Standard. This designation was given on December 9, 1946. In 1960, it was agreed that the standard needed a complete revision and simultaneousl
20、y that it should be expanded to cover threaded fittings and plugs, then covered by MSS SP-49 and SP-50. A Task Force worked diligently for 4 years before arriving at a draft that it felt was acceptable. They also found that ratings were outdated and eliminated the 4,000-lb classes of threaded fittin
21、gs, assigned pressuretemperature ratings for a number of materials, and converted the socket-weld fitting ratings to 3,000 and 6,000 lb. Following approval by the Sectional Committee and Sponsors, ASA approval was granted on January 28, 1966. Following designation changes of ASA to ANSI and Sectiona
22、l Committee to Standards Committee, Subcommittee 6 began consideration of changes in 1969. Early in 1972, changes in the pressure class designations, materials, and clarification of wording were agreed upon and submitted for approval. This approach was granted on June 20, 1973. The work of developme
23、nt of the 1980 edition of B16.11 began in 1975 when the committee began consideration of comments and proposals for change that were received. The development procedure was arduous in that a number of ballots were taken that elicited many additional comments and counter proposals. The major changes
24、included an expanded scope for better definition, requirements for conformance marking, a Nonmandatory Annex with provisions for proof or burst testing, and the inclusion of metric equivalents. Following approval by the Standards Committee and Co-Secretariat, final approval by ANSI was granted on Oc
25、tober 6, 1980. In 1982, American National Standards Committee B16 was reorganized as an ASME Committee operating under procedures accredited by ANSI. The 1991 edition of the standard, retitled “Forged Fittings, Socket-Welding and Threaded,” incorporated forging material listed in Table 1 of ASME B16
26、.34-1988, including Group 3 material that was not previously covered in B16.11. The 1991 edition established U.S. Customary units as the standard. Other clarifying and editorial revisions were made in order to improve the text. Following approval by the Standards Committee and ASME, final approval b
27、y ANSI was granted on March 4, 1991. ivIn 1996, metric dimensions were added as an independent but equal standard to the inch units. Following approval by the Standards Committee and ASME, this revision to the 1991 edition of this Standard was approved as an American National Standard by ANSI on Dec
28、ember 16, 1996, with the new designation ASME B16.11-1996. In 2000, the Standards Committee, ASME, and ANSI approved an addenda to this Standard to remove partial compliance fittings and nonstandard material requirements. Due to an ASME policy change concerning the publishing of addenda, the intende
29、d addenda changes were incorpo- rated into the 2001 edition. Threaded end street elbow requirements were incorporated into the 2004 edition. Following approval by the Standards Committee and ASME, the revision to the 2001 edition was approved as an American National Standard by ANSI on September 30,
30、 2005 with the designation ASME B16.11-2005. A number of technical revisions were made along with format and reference revisions, such as material marking requirements. Following approval by the Standards Committee and ASME, this revision to the 2005 edition was approved as an American National Stan
31、dard by ANSI on July 9, 2009 with the designation ASME B16.11-2009. Suggestions for improvement of this Standard are welcome. They should be addressed to the Secretary, ASME B16 Standards Committee, Three Park Avenue, New York, NY 10016. vASME B16 COMMITTEE Standardization of Valves, Flanges, Fittin
32、gs, and Gaskets (The following is the roster of the Committee at the time of approval of this Standard.) STANDARDS COMMITTEE OFFICERS W. B. Bedesem, Chair M. L. Nayyar, Vice Chair U. DUrso, Secretary STANDARDS COMMITTEE PERSONNEL R. W. Barnes, ANRIC Enterprises, Inc. W. B. Bedesem, ExxonMobil Resear
33、ch and Engineering Co. D. F. Buccicone, Elkhart Products Corp. M. A. Clark, NIBCO, Inc. U. DUrso, The American Society of Mechanical Engineers C. E. Floren, Mueller Co. D. R. Frikken, Becht Engineering Co. M. L. Henderson, TIEC, Inc. G. A. Jolly, Vogt Valves/Flowserve Corp. SUBCOMMITTEEFS TEEL THREA
34、DED AND WELDING FITTINGS G. A. Cuccio, Chair, Capitol Manufacturing Co. G. A. Jolly, Vice Chair, Vogt Valves/Flowserve R. J. Horvath, Secretary, The American Society of Mechanical Engineers A. Appleton, Alloy Stainless Products Co., Inc. W. J. Birkholz, Markovitz Enterprises, Inc. K. W. Doughty, Sha
35、w Alloy Piping Products, Inc. J. P . Ellenberger, Consultant vi M. Katcher, Haynes International W. N. McLean, Newco Valves T. A. McMahon, Fisher Controls International, Inc. M. L. Nayyar, Bechtel Corp. J. D. Page, U.S. Nuclear Regulatory Commission W. H. Patrick, The Dow Chemical Co. R. A. Schmidt,
36、 Hackney Ladish, Inc. H. R. Sonderegger, Anvil International, Inc. W. M. Stephan, Flexitallic, L.P . D. A. Williams, Southern Company Generation D. R. Frikken, Becht Engineering Co. M. L. Henderson, TIEC, Inc. C. J. Lafferty, Pennsylvania Machine Works, Inc. D. H. Monroe, Consultant R. A. Schmidt, H
37、ackney Ladish, Inc. H. R. Sonderegger, Anvil International, Inc. J. P. Tucker, Flowserve Corp. M. M. Zaidi, Jacobs Engineering Group, Inc.CORRESPONDENCE WITH THE B16 COMMITTEE General. ASME Standards are developed and maintained with the intent to represent the consensus of concerned interests. As s
38、uch, users of this Standard may interact with the Committee by requesting interpretations, proposing revisions, and attending Committee meetings. Corre- spondence should be addressed to: Secretary, B16 Standards Committee The American Society of Mechanical Engineers Three Park Avenue New York, NY 10
39、016-5990 As an alternative, inquiries may be submitted via e-mail to: SecretaryB16asme.org. Proposing Revisions. Revisions are made periodically to the Standard to incorporate changes that appear necessary or desirable, as demonstrated by the experience gained from the application of the Standard. A
40、pproved revisions will be published periodically. The Committee welcomes proposals for revisions to this Standard. Such proposals should be as specific as possible, citing the paragraph number(s), the proposed wording, and a detailed description of the reasons for the proposal, including any pertine
41、nt documentation. Interpretations. Upon request, the B16 Committee will render an interpretation of any require- ment of the Standard. Interpretations can only be rendered in response to a written request sent to the Secretary of the B16 Standards Committee. The request for interpretation should be
42、clear and unambiguous. It is further recommended that the inquirer submit his/her request in the following format: Subject: Cite the applicable paragraph number(s) and the topic of the inquiry. Edition: Cite the applicable edition of the Standard for which the interpretation is being requested. Ques
43、tion: Phrase the question as a request for an interpretation of a specific requirement suitable for general understanding and use, not as a request for an approval of a proprietary design or situation. The inquirer may also include any plans or drawings that are necessary to explain the question; ho
44、wever, they should not contain proprietary names or information. Requests that are not in this format will be rewritten in this format by the Committee prior to being answered, which may inadvertently change the intent of the original request. ASME procedures provide for reconsideration of any inter
45、pretation when or if additional information that might affect an interpretation is available. Further, persons aggrieved by an interpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary devic
46、e, or activity. Attending Committee Meetings. The B16 Standards Committee regularly holds meetings, which are open to the public. Persons wishing to attend any meeting should contact the Secretary of the B16 Standards Committee. viiINTENTIONALLY LEFT BLANK viiiASME B16.11-2009 FORGED FITTINGS, SOCKE
47、T-WELDING AND THREADED 1 SCOPE AND GENERAL 1.1 Scope This Standard covers ratings, dimensions, tolerances, marking, and material requirements for forged fittings, both socket-welding and threaded, as illustrated in Tables 1 through 5 and Tables I-1 through I-5, inclusive. 1.1.1 Fitting Types/Configu
48、ration. Types of fittings covered by this Standard are shown in Table 6, by class and size range. Fittings shown in Tables 1 through 5 and 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, thre
49、ads, or counterbores may be made by agreement between the manufacturer and purchaser. When such fittings meet all other stipulations of this Standard, they shall be considered in compliance there- with, provided they are appropriately marked (see section 4). 1.1.3 Welding. Installation welding requirements are not within the scope of this Standard. Installation welding shall be in accordance with the applicable pip- ing Code or regulation covering the piping system into which the fittings are installed. 1.2 General 1.2.1 Referenced Standards. Standards and specifi- cations adopted by
