ASME B16 20-2017 Metallic Gaskets for Pipe Flanges.pdf

1、Metallic Gaskets for Pipe Flanges AN AMERICAN NATIONAL STANDARD ASME B16.20-2017 (Revision of ASME B16.20-2012)ASME B16.20-2017 (Revision of ASME B16.20-2012) Metallic Gaskets for Pipe Flanges AN AMERICAN NATIONAL STANDARD xDate of Issuance: December 29, 2017 The next edition of this Standard is sch

2、eduled for publication in 2022. ASME issues writt en replies to inquiries concerning interpre tations of technical aspects of this Standard. Periodically certain actions of the ASME B16 Committ ee may be published as Cases. Cases and interpre tations are published on the ASME Web site under the Comm

3、itt ee Pages at htt p:/cstools.asme.org/ as they are issued. Errata to codes and s tandards may be post ed on the ASME Web site under the Committ ee Pages to pr ovide corrections to incorrectly published item s, or to correct typographical or grammatical err ors in codes and s tandards. Such errata

4、shall be used on the date post ed. The Committ ee Pages can be found at htt p:/cstools.asme.org/. There is an option available to automatically receive an e-mail notification when errata are post ed to a particular code or sta ndard. This option can be found on the appr opriate Committ ee Page after

5、 selecting “Errata” in the “Publication Information” section. ASME is the regis tered trademark of The American Society of Mechanical Engineers. This code or standard was developed under proc edures accredited as meeting the criteria for American National Standards. The Standards Commit tee that app

6、roved the code or standard was balanced to assure that individuals fro m competent and concerned int erests have had an opportunity to participate. The pr oposed code or standard was made available for public review and comment that provides an opportunity for additional public input fro m industry

7、, academia, regulatory agencies, and the public-at -large. ASME does not “appr ove, ” “rate, ” or “endorse” any it em, construction, proprietary device, or activity . ASME does not take any position with respect to the validity of any patent rights assert ed in connection with any items mentioned in

8、 this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable lett ers patent, nor assume any such liability . Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the r

9、isk of infringement of such rights, is entirely their own responsibility . Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpret ed as government or industry endor sement of this code or standard. ASME accepts responsibility for only those int

10、erpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of int erpretations by individuals. No part of this document may be reproduced in any form, in an electronic retrieval sys t em or otherwise, without the prior writ ten

11、permission of the publisher . The American Society of Mechanical Engineers Two Park Avenue, New York, NY 10016-5990 Copyright 2017 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All rights reserved Printed in U.S.A.CONTENTS Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi Correspondence With the B16 Committee . . . . . . . . . . . . . . .

13、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Important Information Concerning Use of Asbestos or Alternative Materials . . . . . . . . . . . . . . . . . . . . . . . . ix Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14、. . . . . . . . . . . . . . . . . . . . . . List of Changes in Record Number Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi PART GR General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15、 . . . . . 1 GR-1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 GR-2 Quality Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 GR-3 References .

16、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 GR-4 Relevant Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 PART RJ Ring-Joint Gaskets . . . . . . . . . . .

17、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 RJ-1 Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 RJ-2 Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 RJ-3 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 RJ-4 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19、 . . . . . . . . . . . . . 2 RJ-5 Dimensions and Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 RJ-6 Surface Finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 RJ-7 Identif

20、ication Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 PART SW Spiral- Wound Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 SW-1 Size and Class . . . . . . . . . . . . . . . .

21、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 SW-2 Dimensions and Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 SW-3 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22、. . . . . . . . . . . . . . . . . . . . . 16 SW-4 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 PART JA Jacketed Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23、. . . . . . 33 JA-1 Size and Pressure Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 JA-2 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 JA-3 Dimensions an

24、d Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 JA-4 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 JA-5 Marking . . . . . . . . . . . . . . . . . . . . . .

25、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 PART GM Grooved Metal Gaskets With Covering Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 GM-1 Size and Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

26、. . . . . . . . . . . . . . 39 GM-2 Dimensions and Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 GM-3 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 GM-4 Ma

27、rking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Mandatory Appendix I References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 iii xNonmandatory Ap

28、pendix A Quality System Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Figures SW-2.1-1 Spiral- Wound Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 JA-3-1 Jacketed Gasket .

29、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 GM-2.1-1 Grooved Metal Gasket With Covering Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 GM-4.1-1 Illustration of Example Markings for Grooved Metal Gasket

30、s With Covering Layers . . . . . . 47 Tables RJ-3.2-1 Maximum Hardness for Ring Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 RJ-4-1 Ring Gasket Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 RJ

31、-5-1 Type R Ring Gasket Dimensions and Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 RJ-5-2 Pipe Sizes for Type R Ring Gaskets Suitable for Referenced Standards . . . . . . . . . . . . . . . 7 RJ-5-3 Type RX Ring Gasket Dimensions and Tolerances . . . . . . . . . . . . .

32、 . . . . . . . . . . . . . . . . . 10 RJ-5-4 Pipe Sizes for Type RX Ring Gaskets Suitable for Referenced Standards . . . . . . . . . . . . . . 12 RJ-5-5 Type BX Ring Gasket Dimensions and Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 RJ-5-6 Pipe Sizes for Type BX Ring Gas

33、kets Suitable for Referenced Standards . . . . . . . . . . . . . . 14 SW-2.1-1 Dimensions for Spiral- Wound Gaskets Used With ASME B16.5 Flanges . . . . . . . . . . . . . . . 18 SW-2.1-2 Dimensions for Spiral- Wound Gaskets Used With ASME B16.47 Series A Flanges . . . . . . . . 20 SW-2.1-3 Dimension

34、s for Spiral- Wound Gaskets Used With ASME B16.47 Series B Flanges . . . . . . . . 22 SW-2.1-4 Inside Diameters of Inner Rings for Spiral- Wound Gaskets for Use With ASME B16.5 Flanges 24 SW-2.1-5 Inside Diameters of Inner Rings for Spiral- Wound Gaskets Used Between ASME B16.47 Series A Flanges . .

35、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 SW-2.1-6 Inside Diameters of Inner Rings for Spiral- Wound Gaskets Used Between ASME B16.47 Series B Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36、 . . . . . . . . . . . . . . . . . . . . . . 26 SW-2.5-1 Minimum Pipe Wall Thickness Suitable for Use of Spiral- Wound Gaskets With Inner Rings for ASME B16.5 Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 SW-2.5-2 Maximum Bore of ASME B1

37、6.5 Flanges for Use With Spiral- Wound Gaskets . . . . . . . . . . . 28 SW-2.5-3 Maximum Bore of ASME B16.47 Series A Flanges for Use With Spiral- Wound Gaskets . . . . 29 SW-2.5-4 Maximum Bore of ASME B16.47 Series B Flanges for Use With Spiral- Wound Gaskets . . . . 30 SW-3-1 Color Coding and Abbr

38、eviations for Spiral- Wound Gasket Materials . . . . . . . . . . . . . . . . . 31 SW-4.1-1 Example Markings for Spiral- Wound Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 JA-3-1 Jacketed Gasket Dimensions for ASME B16.5 Flanges . . . . . . . . . . . . . . . . . . .

39、. . . . . . . . . 35 JA-3-2 Jacketed Gasket Dimensions for ASME B16.47 Series A Flanges . . . . . . . . . . . . . . . . . . . . 36 JA-3-3 Jacketed Gasket Dimensions for ASME B16.47 Series B Flanges . . . . . . . . . . . . . . . . . . . . 37 JA-4-1 Abbreviations for Identifying Materials for Jacketed

40、 Gaskets . . . . . . . . . . . . . . . . . . . . . . . 38 JA-5.1-1 Example Markings for Jacketed Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 GM-2.1-1 Dimensions for Grooved Metal Gaskets With Covering Layers Used With ASME B16.5 Flanges 41 GM-2.1-2 Dimensions

41、 for Grooved Metal Gaskets With Covering Layers Used With ASME B16.47 Series A Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 GM-2.1-3 Dimensions for Grooved Metal Gaskets With Covering Layers Used With ASME B16.47 Ser

42、ies B Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 GM-3.1-1 Color Coding and Abbreviations for Grooved Metal Gaskets With Covering Layers Materials 46 GM-4.1-1 Example Markings for Grooved Metal Gaskets With Covering

43、 Layers . . . . . . . . . . . . . . . . . 47 ivFOREWORD Ring-joint gaskets and grooves probably originated in the boiler field, where they were used in various forms for manhole covers, autoclaves, and other closures; however, it was in the oil industry (both in the production and refining of oil) t

44、hat they received the greatest recognition and were developed into their present form. Their use expanded steadily as temperatures and pressures were increased in steam plants. Tests examining their application in flanges and valves were conducted as early as 1928. In June 1936, the American Petrole

45、um Institute (API) issued Tentative Standard 5-G-3 on Ring-Joints for Steel Flanges and Flange Unions for use with API Tubular Goods. This standard was known as API Specification 6B, Ring-Joint Flanges. Following the acceptance of ring-joints for flanges and valves by API and the issuance of their s

46、tandard, ASA B16e on Steel Pipe Flanges and Flanged Fittings was revised to include them, and the 1939 edition included standard dimensions for a full line of ring-joint flanges based on the API standard. Development work continued, and API formulated Standard 6E, Specification for Wellhead Equipmen

47、t, which included ring-joints not covered in ASA B16e-1939. In 1949, the American Standards Association (ASA), Sectional Committee B16, Subcommittee 3, Steel Flanges and Flanged Fittings, assembled the available information on ring-joint gaskets into a single standard. ASA approved the Standard, wit

48、h the designation ASA B16.20-1952, on April 30, 1952. On April 4,1955, ASA approved an updated edition with the designation ASA B16.20-1955. Ring gaskets for Class 900 (900 lb at that time) in sizes NPS 26 through NPS 36 were added in the next edition, which ASA approved on April 2, 1956. The Standa

49、rd was again reviewed in 1962, and ASA approved it on April 25, 1963. In 1973, the Standard was revised, and the American National Standards Institute (ANSI) approved it as an American National Standard. Following publication of the 1973 edition, API requested that ASME convert their gasket standard, API 601, into an ASME American National Standard. As a result of that request, the Standard was expanded to include requirements for spiral-wound and jacketed gaskets that were formerly listed in API 601, 7th edition, 1988. Ring-joint groove dimensions were not included, because they were incl