Pipe Threads, 60 deg, General Purpo
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 D
Pipe Threads, 60deg, General Purpo 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 D
Three Park Avenue • New York, NY 10016
Date of Issuance:June15,2007
富人的习惯
This Standard will be revid when the Society approves the issuance of a new edition.There will be no addenda or written interpretations of the requirements of this Standard issued to this edition. Periodically,certain actions of the ASME B1Committee may be published as Cas.Cas are published on the ASME Web site under the Committee Pages at cstools.asme 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 National Standards.The 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 propod code or standard was made available 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“endor”any item,construction,proprietary device,or activity.
ASME does not take any position with respect to the validity of any patent rights asrted in connection with any items mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent,nor assumes any such liability.Urs of a code or standard are expressly advid that determination of the validity of any such patent rights,and the risk of infringement of such rights,is entirely their own responsibility.
Participation by federal agency reprentative(s)or person(s)affiliated with industry is not to be interpreted as government or industry endorment of this code or standard.
ASME accepts responsibility for only tho interpretations of this document issued in accordance with the established ASME 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 otherwi,
without the prior written permission of the publisher.
The American Society of Mechanical Engineers
Three Park Avenue,New York,NY10016-5990
Copyright©2007by
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
All rights rerved
Printed in U.S.A.
下寿CONTENTS
Foreword (iv)
Committee Roster (v)
Correspondence With the B1Committee (vi)
1Scope (1)
2Reference and Symbols (1)
3Taper Pipe Thread Form (1)
4Specifications for General Purpo Taper Pipe Threads,NPT (8)
5Specifications for Internal Parallel Threads in Pipe Couplings,NPSC (8)
北平无战事小说6Gauges and Gauge Tolerances for Standard Pipe Thread,NPT (8)
于欢7Gauging of Taper Pipe Thread,NPT (11)
8Gauging of NPSC Parallel Pipe Threads (11)
Figures
1Standard Taper Pipe Thread Notation (2)
2Basic Profile of Standard Taper Pipe Thread (3)
3Standard Taper Pipe Threads for Pressure-Tight Joints (5)
4NPT Standard Taper Pipe Thread Plug and Ring Gauges (12)
5Suggested Form of Gauge Thread (12)
6Gauging External Taper Threads With Ring Gauge (12)
7Gauging Internal Taper Threads With Plug Gauge (12)
8Gauging of Chamfered Threads (18)
Tables
1Limits on Crest and Root Truncation of Standard External and Internal
Taper Pipe Threads (4)
无限销魂
2Basic Thread Dimensions (6)
离别时的祝福语3Tolerances on Taper,Lead,and Angle of Pipe Threads,NPT (9)
4Dimensions,Internal Parallel Threads in Pipe Couplings,NPSC (9)
5Basic Dimensions of Plug and Ring Gauges for NPT Threads (13)
6Tolerances for NPT Working Plug and Ring Gauges (14)
少先队队歌是什么
7Diameter Equivalent of Variation in Lead for Tools and Gauges (16)推迟的英语
8Diameter Equivalent of Variation in Half Included Angle of Thread for
Tools and Gauges (17)
Nonmandatory Appendices
A The Turns of Engagement Method of Verifying Product Threads (19)
B Tap Drill Sizes (20)
iii
FOREWORD
This Standard is a metric conversion of the data for NPT inch ries taper pipe threads and NPSC inch ries straight internal pipe threads.The NPT and NPSC inch threads are included in ANSI/ASME B1.20.1,Pipe Threads,General Purpo(Inch).Threads and gages delineated herein are interchangeable with tho in ANSI/ASME B1.20.1.Tabulated metric values have been converted from values in ANSI/ASME B1.20.1and rounded in accordance with ASME B1.30, Screw Threads:Standard Practice for Calculating and Rounding Dimensions.Values are given in millimeters.
When compared to values calculated from formulas in this Standard,there may be a difference in the last decimal place but this will not affect interchangeability.The ASME B1Subcommittee20 prepared this metric Standard in order to encourage global u of the NPT Pipe Thread.For ea of u,both p
roduct threads and gauging are contained in this one Standard.Nonmandatory Appendices A and B are informative only and are not considered a part of this Standard. ASME B1.20.2M was approved by the American National Standards Institute on December 21,2006.
iv
