1、AN AMERICAN NATIONAL STANDARDProcess PipingASME B31.3-2004(Revision of ASME B31.3-2002)ASME Code for Pressure Piping, B31Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B31.3-2004(Revision of
2、ASME B31.3-2002)Process PipingASME CODE FOR PRESSURE PIPING, B31AN AMERICAN NATIONAL STANDARDThree Park Avenue New York, NY 10016Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Date of Issuance: Ap
3、ril 29, 2005Mandatory Date: October 31, 2005This edition was approved by the American National Standards Instituteand designated ASME B31.3-2004 on June 24, 2004.The next edition of this Code is scheduled for publication in 2006. There will be no addendaissued to ASME B31.3-2004.ASME issues written
4、replies to inquiries concerning interpretations of technical aspects of theCode. Interpretations are published on the ASME Web site under the Committee Pages at http:/www.asme.org/codes/ as they are issued.Periodically certain actions of the ASME B31 Committee will be published as Cases. While these
5、Cases do not constitute formal revisions of the Code, they may be used in specifications, or otherwise,as representing considered opinions of the Committee. The Cases are not part of the Code and arepublished separately.ASME is the registered trademark of The American Society of Mechanical Engineers
6、.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards. The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate. Th
7、e proposed code or standard was madeavailable for public review and comment, which provides an opportunity for additional public input from industry,academia, regulatory agencies, and the public-at-large.ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or act
8、ivity.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 does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable Letters Patent, nor assume any suc
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11、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 EngineersThree Park Avenue, New York, NY 10016-5990Copyright 2005 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPri
12、nted in U.S.A.Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CONTENTSForeword xiCommittee Personnel xiiiIntroduction . xviSummary of Changes xviiiChapter I Scope and Definitions 1300 General State
13、ments 1Chapter II Design . 9Part 1 Conditions and Criteria . 9301 Design Conditions . 9302 Design Criteria 11Part 2 Pressure Design of Piping Components 17303 General 17304 Pressure Design of Components 18Part 3 Fluid Service Requirements for Piping Components . 27305 Pipe . 27306 Fittings, Bends, M
14、iters, Laps, and Branch Connections 28307 Valves and Specialty Components 29308 Flanges, Blanks, Flange Facings, and Gaskets . 30309 Bolting 30Part 4 Fluid Service Requirements for Piping Joints . 31310 General 31311 Welded Joints 31312 Flanged Joints . 32313 Expanded Joints . 32314 Threaded Joints
15、32315 Tubing Joints 33316 Caulked Joints . 33317 Soldered and Brazed Joints . 33318 Special Joints 33Part 5 Flexibility and Support 33319 Piping Flexibility 33321 Piping Support 38Part 6 Systems . 40322 Specific Piping Systems 40Chapter III Materials 42323 General Requirements 42325 Materials Miscel
16、laneous . 51Chapter IV Standards for Piping Components . 52326 Dimensions and Ratings of Components 52Chapter V Fabrication, Assembly, and Erection . 55327 General 55328 Welding . 55330 Preheating . 61331 Heat Treatment 62332 Bending and Forming 66333 Brazing and Soldering . 67iiiCopyright ASME Inte
17、rnational Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-335 Assembly and Erection . 67Chapter VI Inspection, Examination, and Testing 69340 Inspection . 69341 Examination . 69342 Examination Personnel . 75343 Examination Pro
18、cedures 75344 Types of Examination 75345 Testing 76346 Records . 79Chapter VII Nonmetallic Piping and Piping Lined With Nonmetals . 80A300 General Statements 80Part 1 Conditions and Criteria . 80A301 Design Conditions . 80A302 Design Criteria 80Part 2 Pressure Design of Piping Components 82A303 Gene
19、ral 82A304 Pressure Design of Piping Components . 82Part 3 Fluid Service Requirements for Piping Components . 83A305 Pipe . 83A306 Nonmetallic Fittings, Bends, Miters, Laps, and Branch Connections . 83A307 Nonmetallic Valves and Specialty Components . 84A308 Flanges, Blanks, Flange Facings, and Gask
20、ets . 84A309 Bolting 84Part 4 Fluid Service Requirements for Piping Joints . 85A310 General 85A311 Bonded Joints in Plastics . 85A312 Flanged Joints . 85A313 Expanded Joints . 85A314 Threaded Joints 85A315 Tubing Joints 85A316 Caulked Joints . 85A318 Special Joints 85Part 5 Flexibility and Support 8
21、6A319 Flexibility of Nonmetallic Piping . 86A321 Piping Support 87Part 6 Systems . 88A322 Specific Piping Systems 88Part 7 Materials 88A323 General Requirements 88A325 Materials Miscellaneous . 90Part 8 Standards for Piping Components . 90A326 Dimensions and Ratings of Components 90Part 9 Fabricatio
22、n, Assembly, and Erection . 90A327 General 90A328 Bonding of Plastics 93A329 Fabrication of Piping Lined With Nonmetals 96A332 Bending and Forming 96A334 Joining Nonplastic Piping 97A335 Assembly and Erection . 97Part 10 Inspection, Examination, and Testing 98A340 Inspection . 98A341 Examination . 9
23、8A342 Examination Personnel . 98A343 Examination Procedures 98ivCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A344 Types of Examination 98A345 Testing 99A346 Records . 100Chapter VIII Piping for
24、Category M Fluid Service 101M300 General Statements 101Part 1 Conditions and Criteria . 101M301 Design Conditions . 101M302 Design Criteria 101Part 2 Pressure Design of Metallic Piping Components 102M303 General 102M304 Pressure Design of Metallic Components . 102Part 3 Fluid Service Requirements fo
25、r Metallic Piping Components . 102M305 Pipe . 102M306 Metallic Fittings, Bends, Miters, Laps, and Branch Connections 102M307 Metallic Valves and Specialty Components . 102M308 Flanges, Blanks, Flange Facings, and Gaskets . 103M309 Bolting 103Part 4 Fluid Service Requirements for Metallic Piping Join
26、ts . 103M310 Metallic Piping, General . 103M311 Welded Joints in Metallic Piping . 103M312 Flanged Joints in Metallic Piping . 103M313 Expanded Joints in Metallic Piping . 103M314 Threaded Joints in Metallic Piping 103M315 Tubing Joints in Metallic Piping 103M316 Caulked Joints . 104M317 Soldered an
27、d Brazed Joints . 104M318 Special Joints in Metallic Piping 104Part 5 Flexibility and Support of Metallic Piping 104M319 Flexibility of Metallic Piping . 104M321 Piping Support 104Part 6 Systems . 104M322 Specific Piping Systems 104Part 7 Metallic Materials 104M323 General Requirements 104M325 Mater
28、ials Miscellaneous . 104Part 8 Standards for Piping Components . 105M326 Dimensions and Ratings of Components 105Part 9 Fabrication, Assembly, and Erection of Metallic Piping 105M327 General 105M328 Welding of Metals . 105M330 Preheating of Metals . 105M331 Heat Treatment of Metals 105M332 Bending a
29、nd Forming of Metals 105M335 Assembly and Erection of Metallic Piping 105Part 10 Inspection, Examination, Testing, and Records of Metallic Piping 106M340 Inspection . 106M341 Examination . 106M342 Examination Personnel . 106M343 Examination Procedures 106M344 Types of Examination 106M345 Testing 106
30、M346 Records . 106Parts 11 Through 20, Corresponding to Chapter VII . 106MA300 General Statements 106vCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Part 11 Conditions and Criteria . 106MA301 Desi
31、gn Conditions . 106MA302 Design Criteria 106Part 12 Pressure Design of Nonmetallic Piping Components 106MA303 General 106MA304 Pressure Design of Nonmetallic Components . 107Part 13 Fluid Service Requirements for Nonmetallic Piping Components . 107MA305 Pipe . 107MA306 Nonmetallic Fittings, Bends, M
32、iters, Laps, and Branch Connections . 107MA307 Nonmetallic Valves and Specialty Components . 107MA308 Flanges, Blanks, Flange Facings, and Gaskets . 107MA309 Bolting 107Part 14 Fluid Service Requirements for Nonmetallic Piping Joints 107MA310 General 107MA311 Bonded Joints 107MA312 Flanged Joints .
33、107MA313 Expanded Joints . 107MA314 Threaded Joints 107MA315 Tubing Joints in Nonmetallic Piping 107MA316 Caulked Joints . 107MA318 Special Joints 107Part 15 Flexibility and Support of Nonmetallic Piping 107MA319 Piping Flexibility 107MA321 Piping Support 107Part 16 Nonmetallic and Nonmetallic Lined
34、 Systems 107MA322 Specific Piping Systems 107Part 17 Nonmetallic Materials . 108MA323 General Requirements 108Part 18 Standards for Nonmetallic and Nonmetallic Lined Piping Components 108MA326 Dimensions and Ratings of Components 108Part 19 Fabrication, Assembly, and Erection of Nonmetallic and Nonm
35、etallic LinedPiping . 108MA327 General 108MA328 Bonding of Plastics 108MA329 Fabrication of Piping Lined With Nonmetals 108MA332 Bending and Forming 108MA334 Joining Nonplastic Piping 108MA335 Assembly and Erection . 108Part 20 Inspection, Examination, Testing, and Records of Nonmetallic andNonmetal
36、lic Lined Piping . 108MA340 Inspection . 108MA341 Examination . 108MA342 Examination Personnel . 108MA343 Examination Procedures 108MA344 Types of Examination 108MA345 Testing 108MA346 Records . 108Chapter IX High Pressure Piping . 109K300 General Statements 109Part 1 Conditions and Criteria . 109K3
37、01 Design Conditions . 109K302 Design Criteria 110Part 2 Pressure Design of Piping Components 112K303 General 112viCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-K304 Pressure Design of High Press
38、ure Components . 112Part 3 Fluid Service Requirements for Piping Components . 115K305 Pipe . 115K306 Fittings, Bends, and Branch Connections . 115K307 Valves and Specialty Components 116K308 Flanges, Blanks, Flange Facings, and Gaskets . 116K309 Bolting 116Part 4 Fluid Service Requirements for Pipin
39、g Joints . 117K310 General 117K311 Welded Joints 117K312 Flanged Joints . 117K313 Expanded Joints . 117K314 Threaded Joints 117K315 Tubing Joints 117K316 Caulked Joints . 117K317 Soldered and Brazed Joints . 117K318 Special Joints 118Part 5 Flexibility and Support 118K319 Flexibility 118K321 Piping
40、Support 118Part 6 Systems . 118K322 Specific Piping Systems 118Part 7 Materials 119K323 General Requirements 119K325 Miscellaneous Materials 122Part 8 Standards for Piping Components . 122K326 Dimensions and Ratings of Components 122Part 9 Fabrication, Assembly, and Erection . 122K327 General 122K32
41、8 Welding . 122K330 Preheating . 125K331 Heat Treatment 125K332 Bending and Forming 126K333 Brazing and Soldering . 127K335 Assembly and Erection . 127Part 10 Inspection, Examination, and Testing 127K340 Inspection . 127K341 Examination . 127K342 Examination Personnel . 128K343 Examination Procedure
42、s 128K344 Types of Examination 128K345 Testing 130K346 Records . 131Figures300.1.1 Diagram Illustrating Application of B31.3 Piping at Equipment 3302.3.5 Stress Range Reduction Factor, f 16304.2.1 Nomenclature for Pipe Bends 19304.2.3 Nomenclature for Miter Bends . 19304.3.3 Branch Connection Nomenc
43、lature 21304.3.4 Extruded Outlet Header Nomenclature . 23304.5.3 Blanks . 27319.4.4A Moments in Bends . 36319.4.4B Moments in Branch Connections . 37323.2.2A Minimum Temperatures Without Impact Testing for Carbon SteelMaterials 45viiCopyright ASME International Provided by IHS under license with ASM
44、ENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-323.2.2B Reduction in Minimum Design Metal Temperature WithoutImpact Testing 47328.3.2 Typical Backing Rings and Consumable Inserts . 57328.4.2 Typical Butt Weld End Preparation . 58328.4.3 Trimming and Permitted Mis
45、alignment . 58328.4.4 Preparation for Branch Connections 59328.5.2A Fillet Weld Size 59328.5.2B Typical Details for Double-Welded Slip-On and Socket Welding FlangeAttachment Welds . 59328.5.2C Minimum Welding Dimensions for Socket Welding Components OtherThan Flanges 60328.5.4A, B, C Typical Welded
46、Branch Connections 60328.5.4D Acceptable Details for Branch Attachment Welds . 60328.5.4E Acceptable Details for Branch Attachment Suitable for 100%Radiography 61328.5.5 Typical Fabricated Laps 61335.3.3 Typical Threaded Joints Using Straight Threads . 68341.3.2 Typical Weld Imperfections 74A328.5 T
47、ypical Plastic Piping Joints 95K323.3.3 Example of an Acceptable Impact Test Specimen 122K328.4.3 Pipe Bored for Alignment: Trimming and Permitted Misalignment 125K328.5.4 Some Acceptable Welded Branch Connections Suitable for 100%Radiography 126Tables300.4 Status of Appendices in B31.3 8302.3.3C In
48、creased Casting Quality Factors, Ec. 14302.3.3D Acceptance Levels for Castings . 14302.3.4 Longitudinal Weld Joint Quality Factor, Ej15304.1.1 Values of Coefficient Y for t D6 18304.4.1 BPV Code References for Closures 25308.2.1 Permissible Sizes/Rating Classes for Slip-On Flanges Used as LappedFlan
49、ges 30314.2.1 Minimum Thickness of Male Threaded Components 32323.2.2 Requirements for Low Temperature Toughness Tests for Metals . 43323.2.2A Tabular Values for Minimum Temperatures Without Impact Testing forCarbon Steel Materials . 46323.3.1 Impact Testing Requirements for Metals 48323.3.4 Charpy Impact Test Temperature Reduction 49323.3.5 Minimum Requ
