1、AN AM E R IC AN NAT IO NAL STANDARDASME B16.18-2021(Revision of ASME B16.18-2018)Cast Copper Alloy Solder Joint Pressure FittingsASME B16.18-2021(Revision of ASME B16.18-2018)Cast Copper AlloySolder JointPressure FittingsAN AMERICAN NATIONAL STANDARDTwo Park Avenue New York,NY 10016 USAxDate of Issu
2、ance:February 28,2022The next edition of this Standard is scheduled for publication in 2026.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard.Periodically certainactionsoftheASMEB16CommitteemaybepublishedasCases.Casesandinterpretationsarepublis
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10、his 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 EngineersTwo Park Avenue,New York,NY 10016-5990Copyright 2022 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll Rights Re
11、servedCONTENTSForeword.vCommittee Roster.viCorrespondence With the B16 Committee.viiSummary of Changes.ixList of Changes in Record Number Order.x1Scope.12General.13PressureTemperature Ratings.14Fitting Size and Ends.15Marking.26Material.27Metal Thickness.28Inspection Tolerance.29Threaded Ends.310Con
12、figuration of Threaded Ends.311Production Testing.3Mandatory AppendixIReferences.23Nonmandatory AppendicesAStrength of Solder Joints.24BFitting Rating.26CQuality System Program.27Figure4-1Method of Designating Openings of Fittings.5Tables3.1-1Internal PressureTemperature Ratings for Cast Copper Allo
13、y Fittings,psi(kPa).48.2-1Inspection Tolerances.68.2-2Dimensions of Solder Joint Ends.78.2-3Dimensions of Couplings.88.2-4Dimensions of Elbows,Tees,and 45-deg Elbows.98.2-5Dimensions of Reducing 90-deg Elbows.108.2-6Dimensions of Reducing Tees.118.2-7Dimensions of Caps and Plugs.148.2-8Dimensions of
14、 Fitting Reducers.14iii8.2-9Dimensions of Solder Joint Elbows and Tees With Pipe Thread Ends(Straight Sizes).158.2-10Dimensions of Solder Joint Elbows and Tees With Pipe Thread Ends(Reducing Sizes).178.2-11Dimensions of Solder Joint Adapters and Fitting Adapters With Pipe Thread Ends(Straight andRed
15、ucing Sizes).198.2-12Dimensions of Return Bends(Straight Sizes).208.2-13Dimensions of Supply and Return Tees.208.2-14Dimensions of Baseboard Tees(F F C).218.2-15Dimensions of Tees.218.2-16Dimensions of Baseboard Tees(C F C).218.2-17Dimensions of Flush Bushings(FTG C).228.2-18Dimensions of Flush Bush
16、ings(FTG F).22A-1PressureTemperature Ratings.25ivFOREWORDThis American National Standard for solder joint fittings was originally developed by a subcommittee of AmericanStandards Association(ASA)Sectional Committee A40 on Minimum Requirements for Plumbing and Standardization ofPlumbing Equipment,organized in August1928,under the proceduresof the ASA.SubcommitteeNo.11 onSolder-JointFittings for Tubing was appointed in October 1936.At its first meeting,the Subcommittee was informed of the investig
