1、AN AMERICAN NATIONAL STANDARDASME B16.39-2009Revision of ASME B16.39-1998 (R2006)Malleable Iron Threaded Pipe UnionsClasses 150, 250, and 300Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B1
2、6.39-2009Revision of ASME B16.39-1998 (R2006)MalleableIron ThreadedPipe UnionsClasses 150, 250, and 300AN AMERICAN NATIONAL STANDARDCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Date of Issuance
3、: October 9, 2009The next edition of this Standard is scheduled for publication in 2014. 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 site under t
4、he Committee Pages athttp:/cstools.asme.org as they are issued.ASME is the registered trademark of 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 approve
5、d 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 was madeavailable for public review and comment that provides an opportunity for additional public input from industry, academia,
6、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 position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document, and do
7、es not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent, nor assumes any such liability. Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights, and the risk of infringement of su
8、ch rights, isentirely their own responsibility.Participation by federal agency representative(s) or 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 is
9、sued in accordance with the establishedASME procedures and policies, which precludes the issuance 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
10、 Society of Mechanical EngineersThree Park Avenue, New York, NY 10016-5990Copyright 2009 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted withou
11、t license from IHS-,-,-CONTENTSForeword ivCommittee Roster vCorrespondence With the B16 Committee . vi1 Scope . 12 Design 13 PressureTemperature Ratings 24 Size . 25 Marking . 26 Materials 27 Joints and Seats . 28 Threading of Pipe Ends . 29 Hydrostatic Strength . 310 Tensile Strength . 311 Air Pres
12、sure Test . 312 Sampling for Air Pressure Test 313 Coatings 314 Dimensions 3Tables1 PressureTemperature Ratings . 22 Tensile Strength of Unions . 23 SI Dimensions of Class 150 Malleable Iron Threaded Unions 34 SI Dimensions of Class 250 Malleable Iron Threaded Unions 45 SI Dimensions of Class 300 Ma
13、lleable Iron Threaded Unions 4Mandatory AppendicesI Dimensions and Pressure Ratings of Unions in U.S. Customary Units . 5II References 7Nonmandatory AppendixA Quality System Program . 8iiiCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking
14、 permitted without license from IHS-,-,-FOREWORDIn 1921, the American Engineering Standards Committee, later the American StandardsAssociation (ASA), now the American National Standards Institute (ANSI), authorized the organi-zation of a Sectional Committee on the Standardization of Pipe Flanges and
15、 Flanged Fittings, withthe following organizations as joint sponsors: Heating, Piping, and Air Conditioning ContractorsNational Association, later the Mechanical Contractors Association of America (MCAA);Manufacturers Standardization Society of the Valve and Fittings Industry (MSS); and the American
16、Society of Mechanical Engineers (ASME).Threaded fittings were added to the scope of the B16 Committee, and Subcommittee No. 2(now Subcommittee B) was made responsible for threaded fittings other than steel. Standardsfor cast and malleable iron fittings were approved by ASA as early as 1927.For many
17、years, the need for standardization of threaded malleable iron unions was met byFederal Specifications (published by the General Services Administration) and other documentspublished by the Association of American Railroads (AAR) and the Underwriters Laboratories(UL). As these standards continued to
18、 diverge, however, manufacturers concluded that a commonpractice would be desirable. Accordingly, beginning in 1967, MSS developed a standard practiceembodying features of the existing standards and published it as MSS SP-76-1970.During the next few years, ANSI recognition of the AAR and UL standard
19、s was withdrawnin favor of SP-76, and in 1975 MSS submitted its standards to Subcommittee B of AmericanNational Standards Committee B16 for consideration as an American National Standard. Afterseveral modifications and the addition of metric equivalents, the Standard was approved by theCommittee, co
20、-secretariat organizations, and ANSI. It was then published with the designationANSI B16.39-1977.In 1982 American National Standards Committee B16 was reorganized as an ASME Committeeoperating under procedures accredited by ANSI. The 1986 edition of B16.39 updated the referencedstandards and specifi
21、cations, established U.S. Customary units as the standard, and providedfor electrodeposition as an alternative to hot dipping for any application of zinc coating. Followingapproval by the Standards Committee and ASME, approval as an American National Standardwas given by ANSI on December 31, 1986, w
22、ith the new designation ASME/ANSI B16.39-1986.In the 1998 edition of ASME B16.39, reference standards were updated, a quality system programannex was added, and several editorial revisions were made. Following approval by ASME B16Subcommittee B and the B16 Standards Committee, ANSI approved this Ame
23、rican NationalStandard on November 20, 1998.In this edition, metric units are now shown as the primary units in the body text and tableswith U.S. Customary units shown in parentheses or in separate tables or in an Appendix. TheD min. values in Table 3 have been replaced with the L2 values (external
24、thread length) fromASME B1.20.2M-2006, Pipe Threads, 60 deg, General Purpose and the D min. values in Table I-3have been replaced with the L2 values from ASME B1.20.1-1983, Pipe Threads General Purpose(Inch).Following approval by the B16 Standards Committee, ASME B16.39-2009 was approved as anAmeric
25、an National Standard by ANSI on April 13, 2009.ivCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16 COMMITTEEStandardization of Valves, Flanges,Fittings, and Gaskets(The following is the ros
26、ter of the Committee at the time of approval of this Standard.)STANDARDS COMMITTEE OFFICERSW. B. Bedesem, ChairM. L. Nayyar, Vice ChairU. DUrso, SecretarySTANDARDS COMMITTEE PERSONNELR. W. Barnes, Anric Enterprises, Inc.W. B. Bedesem, ConsultantD. F. Buccicone, Elkhart Products Corp.A. M. Cheta, She
27、ll Westhollow Technology CenterM. A. Clark, Nibco, Inc.G. A. Cuccio, Capitol Manufacturing Co.U. DUrso, The American Society of Mechanical EngineersC. E. Floren, Mueller Co.D. R. Frikken, Becht Engineering Co.R. P. Griffiths, U.S. Coast GuardM. L. Henderson, Tiec, Inc.SUBCOMMITTEE B THREADED FITTING
28、S (EXCEPT STEEL)H. R. Sonderegger, Chair, Anvil International, Inc.K. Barron, Vice Chair, Ward ManufacturingC. OBrien, Secretary, The American Society of MechanicalEngineersR. W. Bonds, Ductile Iron Pipe Research AssociationM. A. Clark, Nibco, Inc.vG. A. Jolly, Vogt Valve Co.M. Katcher, Haynes Inter
29、nationalW. N. McLean, B however, they shouldnot contain proprietary names or information.Requests that are not in this format may be rewritten in the appropriate format by the Committeeprior to being answered, which may inadvertently change the intent of the original request.ASME procedures provide
30、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,” “certify,” “rate,” or “endorse” any item, co
31、nstruction, 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.viCopyright ASME International Provided by IHS
32、 under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.39-2009MALLEABLE IRON THREADED PIPE UNIONSClasses 150, 250, and 3001 SCOPE1.1 GeneralThis Standard covers threaded malleable iron unions,Classes 150, 250, and 300. It also contains pr
33、ovisions forusing steel for NPS18unions. This Standard includes(a) design(b) pressuretemperature ratings(c) size(d) marking(e) materials(f) joints and seats(g) threads(h) hydrostatic strength(i) tensile strength(j) air pressure test(k) sampling(l) coatings(m) dimensionsMandatory Appendix I provides
34、tables in U.S.Customary units.1.2 ReferencesStandards and specifications adopted by reference inthis Standard are shown in Mandatory Appendix II,which is part of this Standard. It is not considered practi-cal to identify the specific edition of each referencedstandard and specification in the text,
35、when referenced.Instead, the specific editions of the referenced standardsand specifications are listed in Mandatory Appendix II.1.3 Quality SystemsNonmandatory requirements relating to the fittingmanufacturers quality system programs are describedin Nonmandatory Appendix A.1.4 Relevant UnitsThis St
36、andard states values in both SI (metric) andU.S. Customary units. These systems of units are to beregarded separately. Within the text, the U.S. Customaryunits are shown in parentheses or in separate tables.The values stated in each table are not exact equivalents;therefore, it is required that each
37、 system of units be usedindependently of the other. Combining values from thetwo systems may constitute nonconformance with theStandard.11.5 Service ConditionsCriteria for selection of materials suitable for particu-lar fluid service are not within the scope of this Standard.1.6 ConventionFor the pu
38、rpose of determining conformance with thisStandard, the convention for fixing significant digitswhere limits, maximum and minimum values are speci-fied, shall be rounded as defined in ASTM E 29. Thisrequires that an observed or calculated value shall berounded off to the nearest unit in the last rig
39、ht-handdigit used for expressing the limit. Decimal valuesand tolerance do not imply a particular method ofmeasurement.1.7 Denotation1.7.1 Pressure Rating Designation. Class, followedby a dimensionless number, is the designation forpressuretemperature ratings as follows:Class 150 250 3001.7.2 Size.
40、NPS, followed by a dimensionless num-ber, is the designation for nominal fitting size. NPS isrelated to the reference nominal diameter, DN, used ininternational standards. The relationship is, typically, asfollows:NPS DN1481215125114321124025021265384 1002 DESIGNThe complete union shall consist of a
41、 tail or male part,a head or female part, and a union nut. The type of jointmay be ball-to-cone, ball-to-ball, or ball-and-socket withmetal-to-metal seating surfaces of iron, copper, or cop-per alloy. The threaded ends shall be male or femalepipe threads. The head or female part may be furnishedas a
42、 coupling, an elbow, or a tee.Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B16.39-2009Table 1 PressureTemperature RatingsPressure, barTemperature, Class 150 Class 250 Class 300C Unions Uni
43、ons Unions29 to 66 20.7 34.5 41.4100 17.5 30.6 37.5125 15.2 27.7 34.6150 12.9 24.8 31.7175 10.6 22.0 28.9200 8.2 19.1 26.0225 5.9 16.2 23.1232 5.2 . . . . . .250 . . . 13.4 20.3275 . . . 10.5 17.4288 . . . 9.0 15.9GENERAL NOTES:(a) 1 bar p 14.5 psi p 100 kPa(b) C pF321.83 PRESSURETEMPERATURE RATINGS
44、(a) Pressuretemperature ratings are shown in Table 1and Table I-1.(b) Unions with copper or copper alloy seats are notintended for use where temperature exceeds 232C(450F).(c) All ratings are independent of the contained fluidand are the maximum pressures at the tabulated temper-atures. Intermediate
45、 ratings may be obtained by linearinterpolation between the temperatures shown.(d) The temperatures shown for the correspondingpressure rating shall be the material temperature of thepressure-retaining structure. It may be assumed that thematerial temperature is the same as the fluid tempera-ture. U
46、se of a pressure rating at a material temperatureother than that of the contained fluid is the responsibilityof the user and subject to the requirements of any appli-cable code.4 SIZE4.1 Nominal Pipe SizeAs applied in this Standard, the use of the phrase“nominal pipe size” or the designation NPS fol
47、lowedby a dimensionless number is for the purpose of identi-fying the end connection of unions. The number is notnecessarily the same as the fitting inside diameter.The connecting pipe dimension can be found inASME B36.10M.5 MARKINGUnions shall be marked on the nut with the manufac-turers name or tr
48、ademark and nominal pressure class2Table 2 Tensile Strength of UnionsUltimate Load, kNNPS Class 150 Class 250 Class 3001811 11 181417 17 273824 24 361234 34 453447 47 62169698011495 95 100112115 115 1252 135 135 180212155 155 2453 180 180 3354 220 220 490except on bar stock unions, where marking is
49、impracti-cal. Additional markings permitted by MSS SP-25 maybe used.6 MATERIALS(a) The mechanical properties of the malleable ironcastings shall be at least equal to those specified in ASTMA 197.(b) Steel bar stock having a yield strength of not lessthan 207 MPa (30 ksi) may be substituted for malleableiron in NPS18unions.(c) Insert rings may be of sui
