1、AN AMERICAN NATIONAL STANDARDASME B16.5-2009(Revision of ASME B16.5-2003)Pipe Flanges andFlanged FittingsNPS 1/2Through NPS 24 Metric/Inch StandardCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-A
2、SME B16.5-2009(Revision of ASME B16.5-2003)Pipe Flanges andFlanged FittingsNPS12Through NPS 24Metric/Inch StandardAN AMERICAN NATIONAL STANDARDCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Date
3、of Issuance: June 30, 2009The next edition of this Standard is scheduled for publication in 2012. There will be no addendaissued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard. Interpretations are published on the ASME Web sit
4、e under the Committee Pages athttp:/cstools.asme.org as they are issued.Items approved as errata to this edition are published on the ASME Web site under Committee Pagesat http:/cstools.asme.org.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard wa
5、s 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 interests have had an opportunity to participate. The proposed code or standa
6、rd 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 item, construction, proprietary device, or activity.ASME does not take an
7、y 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 applicable letters patent, nor assumes any such liability. Users of a co
8、de or 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 asgovern
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10、oduced 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 2009 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S
11、.A.Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-CONTENTSForeword viCommittee Roster ixCorrespondence With the B16 Committee . x1 Scope . 12 PressureTemperature Ratings 23 Component Size . 34 Ma
12、rking . 35 Materials 76 Dimensions 97 Tolerances . 128 Pressure Testing . 14Figures1 Method of Designating Location of Auxiliary Connections WhenSpecified 152 Method of Designating Outlets of Reducing Fittings in Specifications . 163 Thread Length for Connection Tapping 174 Socket Welding for Connec
13、tions . 175 Butt Welding for Connections 176 Bosses for Connections 177 End Flange Facings and Their Relationship to Flange Thickness andCenter-to-End and End-to-End Dimensions 188 Bevel for Wall Thicknesses t From 5 mm to 22 mm Inclusive . 199 Bevel for Wall Thicknesses t Greater Than 22 mm 2010 In
14、side Contour for Use With Rectangular Backing Ring . 2011 Inside Contour for Use With Taper Backing Ring . 2112 Bevel for Outside Thickness . 2113 Bevel for Inside Thickness . 2114 Bevel for Combined Thickness . 2215 Straight Hub Welding Flanges . 22Tables1A List of Material Specifications 41B List
15、of Bolting Specifications Applicable ASTM Specifications . 81C Flange Bolting Dimensional Recommendations . 122-1.1 PressureTemperature Ratings for Group 1.1 Materials . 232-1.2 PressureTemperature Ratings for Group 1.2 Materials . 242-1.3 PressureTemperature Ratings for Group 1.3 Materials . 252-1.
16、4 PressureTemperature Ratings for Group 1.4 Materials . 262-1.5 PressureTemperature Ratings for Group 1.5 Materials . 272-1.7 PressureTemperature Ratings for Group 1.7 Materials . 282-1.9 PressureTemperature Ratings for Group 1.9 Materials . 29iiiCopyright ASME International Provided by IHS under li
17、cense with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-2-1.10 PressureTemperature Ratings for Group 1.10 Materials 302-1.11 PressureTemperature Ratings for Group 1.11 Materials 312-1.13 PressureTemperature Ratings for Group 1.13 Materials 322-1.14 Pressure
18、Temperature Ratings for Group 1.14 Materials 332-1.15 PressureTemperature Ratings for Group 1.15 Materials 342-1.17 PressureTemperature Ratings for Group 1.17 Materials 352-1.18 PressureTemperature Ratings for Group 1.18 Materials 362-2.1 PressureTemperature Ratings for Group 2.1 Materials . 372-2.2
19、 PressureTemperature Ratings for Group 2.2 Materials . 382-2.3 PressureTemperature Ratings for Group 2.3 Materials . 392-2.4 PressureTemperature Ratings for Group 2.4 Materials . 402-2.5 PressureTemperature Ratings for Group 2.5 Materials . 412-2.6 PressureTemperature Ratings for Group 2.6 Materials
20、 . 422-2.7 PressureTemperature Ratings for Group 2.7 Materials . 432-2.8 PressureTemperature Ratings for Group 2.8 Materials . 442-2.9 PressureTemperature Ratings for Group 2.9 Materials . 452-2.10 PressureTemperature Ratings for Group 2.10 Materials 462-2.11 PressureTemperature Ratings for Group 2.
21、11 Materials 472-2.12 PressureTemperature Ratings for Group 2.12 Materials 482-3.1 PressureTemperature Ratings for Group 3.1 Materials . 492-3.2 PressureTemperature Ratings for Group 3.2 Materials . 492-3.3 PressureTemperature Ratings for Group 3.3 Materials . 502-3.4 PressureTemperature Ratings for
22、 Group 3.4 Materials . 502-3.5 PressureTemperature Ratings for Group 3.5 Materials . 512-3.6 PressureTemperature Ratings for Group 3.6 Materials . 522-3.7 PressureTemperature Ratings for Group 3.7 Materials . 532-3.8 PressureTemperature Ratings for Group 3.8 Materials . 542-3.9 PressureTemperature R
23、atings for Group 3.9 Materials . 552-3.10 PressureTemperature Ratings for Group 3.10 Materials 562-3.11 PressureTemperature Ratings for Group 3.11 Materials 562-3.12 PressureTemperature Ratings for Group 3.12 Materials 572-3.13 PressureTemperature Ratings for Group 3.13 Materials 582-3.14 PressureTe
24、mperature Ratings for Group 3.14 Materials 592-3.15 PressureTemperature Ratings for Group 3.15 Materials 602-3.16 PressureTemperature Ratings for Group 3.16 Materials 612-3.17 PressureTemperature Ratings for Group 3.17 Materials 622-3.19 PressureTemperature Ratings for Group 3.19 Materials 623 Permi
25、ssible Imperfections in Flange Facing Finish for Raised Face andLarge Male and Female Flanges . 634 Dimensions of Facings (Other Than Ring Joints, All Pressure RatingClasses) . 645 Dimensions of Ring-Joint Facings (All Pressure Rating Classes) . 666 Reducing Threaded and Slip-On Flanges for Classes
26、150 Through2500 707 Templates for Drilling Class 150 Pipe Flanges and Flanged Fittings . 718 Dimensions of Class 150 Flanges . 729 Dimensions of Class 150 Flanged Fittings 7510 Templates for Drilling Class 300 Pipe Flanges and Flanged Fittings . 8011 Dimensions of Class 300 Flanges . 8112 Dimensions
27、 of Class 300 Flanged Fittings 8413 Templates for Drilling Class 400 Pipe Flanges 8814 Dimensions of Class 400 Flanges . 8915 Templates for Drilling Class 600 Pipe Flanges and Flanged Fittings . 9116 Dimensions of Class 600 Flanges . 9217 Templates for Drilling Class 900 Pipe Flanges and Flanged Fit
28、tings . 9418 Dimensions of Class 900 Flanges . 95ivCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-19 Templates for Drilling Class 1500 Pipe Flanges . 9720 Dimensions of Class 1500 Flanges 9821 Te
29、mplates for Drilling Class 2500 Pipe Flanges . 10022 Dimensions of Class 2500 Flanges 101Mandatory AppendicesI Threading of Pipe for American National Standard Threaded Flanges . 103II PressureTemperature Ratings and Dimensional Data for Classes 150, 300,400, 600, 900, 1500, and 2500 Flanges and Cla
30、sses 150 and 300Flanged Fittings in U.S. Customary Units 105III References 193Nonmandatory AppendicesA Method Used for Establishing PressureTemperature Ratings . 196B Limiting Dimensions of Gaskets Other Than Ring Joint Gaskets 200C Method for Calculating Bolt Lengths . 202D Quality System Program .
31、 204E Dimensions of Classes 400, 600, 900, 1500, and 2500 Flanged Fittings inU.S. Customary Units . 205vCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-FOREWORDIn 1920, the American Engineering St
32、andards Committee later the American Standards Associa-tions (ASA) organized Sectional Committee B16 to unify and further develop standards for pipeflanges and fittings (and later for valves and gaskets). Cosponsors of the B16 Committee wereASME, the Heating and Piping Contractors National Associati
33、on now Mechanical ContractorsAssociation of America (MCAA), and the Manufacturers Standardization Society of the Valvesand Fittings Industry (MSS). Cosponsors were later designated as cosecretariat organizations.The Committee soon recognized the need for standardization of steel pipe flanges. In May
34、,1923, Subcommittee 3 was organized to develop such standards for pressures in the 250-psi to3,200-psi range and for elevated temperatures. Active work began in October, including steelflanged fittings. The first proposed standard was submitted to the Committee in April 1926 andapproved by letter ba
35、llot in December. After favorable review by the three sponsor organizations,the Standard was approved as American Tentative Standard B16e in June 1927.Experience in using the Standard showed the need for hub dimensions of companion flangesand for other changes, including rerating of 250-lb and 1,350
36、-lb flanges and development offlanged fittings with integral bases. An investigation was made into the factors determiningstiffness of flanges and flange hubs. The revised edition was approved as ASA B16E-1932.A revision was initiated in 1936, stimulated by suggestions from Committee members andindu
37、strial users. The resulting 1939 edition contained standards for welding neck flanges (com-pleted in March 1937), 1,500-lb flanges in the 14-in. through 24-in. range, 2,500-lb flanges andflanged fittings in the12-in. through 12-in. range, and dimensions for a full line of ring jointflanges developed
38、 by the American Petroleum Institute. Pressuretemperature ratings for alloysteel flanges and fittings, developed by Subcommittee 4, were included for the first time.In August 1942, the War Production Board requested a review of measures to conserve vitalmaterials in piping components. A special War
39、Committee of B16 was appointed and, operatingunder War Standard Procedure, developed revised pressuretemperature ratings for all materialsand pressure classes. The ratings were published as American War Standard B16e5-1943. In 1945,under normal procedures, Subcommittees 3 and 4 reviewed the 1939 sta
40、ndard and 1943 ratingsand recommended adoption of the wartime ratings. Their report was approved as SupplementNo. 1 to B16e-1939 and published as ASA B16e6-1949. In addition to ratings, the supplementupdated material specification references and added a table of metal wall thickness for welding-end
41、valves.Subcommittee 3 then began a revision of the entire standard. Technically, the 1949 Supplementwas absorbed, new materials were recognized, a general rating method was developed andadded as an appendix, and welding end preparations were expanded. Editorially, a new style ofpresentation was work
42、ed out, including tables rearranged for easier use. Approval by SectionalCommittee, cosponsors, and ASA resulted in the publication of ASA B16.5-1953 (designationchanged from B16e).Work soon began on further revisions. Class B ratings were deleted, and Class A ratings wereclarified as the standard.
43、An appendix defined qualifications for gaskets, other than ring joint,which would merit the ratings. Another appendix defined the method for calculating bolt lengths,including the measurement of stud bolt length between thread ends instead of points. Pressuretemperature ratings for several new mater
44、ials were added, the table of welding end dimensionswas expanded, and the temperatures used in determining ratings were redefined. The resultingnew edition, after approval, was published as ASA B16.5-1957.The more modest revision approved as ASA B16.5-1961 changed the text to clarify the intentor to
45、 make requirements easier to administer. The next revision began in 1963 with nearly 100comments and suggestions. No fundamental changes were made, but the text was further clarified,and wall thicknesses less then14in. for flanged fittings were recognized in the 1968 edition.A new joint study of rat
46、ings between Subcommittees 3 and 4 was initiated before the nextrevision. Based on the Subcommittee 4 report, the rating procedure was revised, and a ratingviCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license fro
47、m IHS-,-,-basis for Class 150 (150 lb) flanges was developed. New product forms, bar and plate, were addedfor special applications, including fabricated flanged valves and fittings. Reference to welding-end valves was not included, because a separate standard for them was. Bolt length calculationsba
48、sed on worst case tolerances led to a revision of tabulated lengths. Testing of valves subsequentlypublished by SC 15 closure members was added to the test requirements. Following final approvalon October 23, the Standard was published as ANSI B16.5-1973.Subcommittee N (formerly 15) was assigned res
49、ponsibility for all valve standards in late 1973.Subcommittee C (formerly 3) continues to have responsibility for flange standards. A revisionwas accordingly initiated to remove all references to valves. At the same time, comments fromusers and changes in the ASME Boiler and Pressure Vessel Code led to significant revisions inthe Clas
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