1、Pipe Threads,60 deg,General PurposeAN AMERICAN NATIO NAL STANDARDASME B1.20.2M-2006Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME B1
2、.20.2M-2006Pipe Threads,60 deg,General PurposeAN AMERICAN NATIONAL STANDARDThree Park Avenue New York,NY 10016Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncont
3、rolled when printed.Date of Issuance:June 15,2007This Standard will be revised when the Society approves the issuance of a new edition.There willbe no addenda or written interpretations of the requirements of this Standard issued to this edition.Periodically,certain actions of the ASME B1 Committee
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10、written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2007 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyrighted material licensed to Stanford University by Thomson Scientific(),downlo
11、aded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.ivCommittee Roster.vCorrespondence With the B1 Committee.vi1Scope.12Reference and Symbols.13Taper Pipe Thread Form.14Specifications for General Purpose Tape
12、r Pipe Threads,NPT.85Specifications for Internal Parallel Threads in Pipe Couplings,NPSC.86Gauges and Gauge Tolerances for Standard Pipe Thread,NPT.87Gauging of Taper Pipe Thread,NPT.118Gauging of NPSC Parallel Pipe Threads.11Figures1Standard Taper Pipe Thread Notation.22Basic Profile of Standard Ta
13、per Pipe Thread.33Standard Taper Pipe Threads for Pressure-Tight Joints.54NPT Standard Taper Pipe Thread Plug and Ring Gauges.125Suggested Form of Gauge Thread.126Gauging External Taper Threads With Ring Gauge.127Gauging Internal Taper Threads With Plug Gauge.128Gauging of Chamfered Threads.18Tables
14、1Limits on Crest and Root Truncation of Standard External and InternalTaper Pipe Threads.42Basic Thread Dimensions.63Tolerances on Taper,Lead,and Angle of Pipe Threads,NPT.94Dimensions,Internal Parallel Threads in Pipe Couplings,NPSC.95Basic Dimensions of Plug and Ring Gauges for NPT Threads.136Tole
15、rances for NPT Working Plug and Ring Gauges.147Diameter Equivalent of Variation in Lead for Tools and Gauges.168Diameter Equivalent of Variation in Half Included Angle of Thread forTools and Gauges.17Nonmandatory AppendicesAThe Turns of Engagement Method of Verifying Product Threads.19BTap Drill Siz
16、es.20iiiCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORDThis Standard is a metric conversion of the data for NPT inch series taper pipe threads andNPSC inch series straight internal pipe threads.The NPT and NPSC inch threads are includedin ANSI/ASME B1.20.1,Pipe Threads,General Purpose(Inch).Threads and gages delineatedherein ar
