ASME B31.3 contains requirements for piping typically found in petroleum refineries; chemical, pharmaceutical, textile, paper, semiconductor, and cryogenic plants; and related processing plants and terminals. It covers materials and components, design, fabrication, assembly, erection, examination, inspection, and testing of piping. This Code applies to piping for all fluids including: (1) raw, intermediate, and finished chemicals; (2) petroleum products; (3) gas, steam, air and water; (4) fluidized solids; (5) refrigerants; and (6) cryogenic fluids. Also included is piping that interconnects pieces or stages within a packaged equipment assembly. Key changes to this revision include: • Category M fluid service definition revised • Revision to the equation for allowable stress range • Thermowell design • Use of cold spring • Impact testing of carbon steels • Installation of Weldolets • Preheat requirements • Heat treatment requirements • Qualification of examination personnel • Acceptance criteria for liquid penetrant an magnetic particle examination • Leak test for high pressure piping • Alternative rules for evaluation of stress range B31.3 is one of ASME’s most requested codes. It serves as a companion to ASME’s B31.1 Code on Power Piping as well as to the other codes in ASME’s B31 series. Together, they remain essential references for anyone engaged with piping. Careful application of these B31 codes will help users to comply with applicable regulations within their jurisdictions, while achieving the operational, cost and safety benefits to be gained from the many industry best-practices detailed within these volumes. Intended for manufacturers, users, constructors, designers, and others concerned with the design, fabrication, assembly, erection, examination, inspection, and testing of piping, plus all potential governing entities.

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4	CONTENTS
13	FOREWORD
15	ASME B31 COMMITTEE Code for Pressure Piping
19	INTRODUCTION
21	SUMMARY OF CHANGES
30	Chapter I Scope and Definitions 300 GENERAL STATEMENTS
32	Figures Fig. 300.1.1 Diagram Illustrating Application of B31.3 Piping at Equipment
38	Tables Table 300.4 Status of Appendices in B31.3
39	Chapter II Design PART 1 CONDITIONS AND CRITERIA 301 DESIGN CONDITIONS
41	302 DESIGN CRITERIA
44	Table 302.3.3C Increased Casting Quality Factors, Ec Table 302.3.3D Acceptance Levels for Castings
45	Table 302.3.4 Longitudinal Weld Joint Quality Factor, Ej
46	Fig. 302.3.5 Stress Range Factor, f
48	Table 302.3.5 Weld Joint Strength Reduction Factor, W
49	PART 2 PRESSURE DESIGN OF PIPING COMPONENTS 303 GENERAL 304 PRESSURE DESIGN OF COMPONENTS
50	Fig. 304.2.1 Nomenclature for Pipe Bends Fig. 304.2.3 Nomenclature for Miter Bends Table 304.1.1 Values of Coefficient Y for t < D/6
53	Fig. 304.3.3 Branch Connection Nomenclature
55	Fig. 304.3.4 Extruded Outlet Header Nomenclature
57	Table 304.4.1 BPV Code References for Closures
58	Fig. 304.5.3 Blanks
59	PART 3 FLUID SERVICE REQUIREMENTS FOR PIPING COMPONENTS 305 PIPE 306 FITTINGS, BENDS, MITERS, LAPS, AND BRANCH CONNECTIONS
61	307 VALVES AND SPECIALTY COMPONENTS 308 FLANGES, BLANKS, FLANGE FACINGS, AND GASKETS Table 308.2.1 Permissible Sizes/Rating Classes for Slip-On Flanges Used as Lapped Flanges
62	309 BOLTING PART 4 FLUID SERVICE REQUIREMENTS FOR PIPING JOINTS 310 GENERAL 311 WELDED JOINTS
63	312 FLANGED JOINTS 313 EXPANDED JOINTS 314 THREADED JOINTS
64	315 TUBING JOINTS 316 CAULKED JOINTS 317 SOLDERED AND BRAZED JOINTS 318 SPECIAL JOINTS Table 314.2.1 Minimum Thickness of External Threaded Components
65	PART 5 FLEXIBILITY AND SUPPORT 319 PIPING FLEXIBILITY
69	Fig. 319.4.4A Moments in Bends Fig. 319.4.4B Moments in Branch Connections
70	320 ANALYSIS OF SUSTAINED LOADS
71	321 PIPING SUPPORT
73	PART 6 SYSTEMS 322 SPECIFIC PIPING SYSTEMS
75	Chapter III Materials 323 GENERAL REQUIREMENTS
76	Table 323.2.2 Requirements for Low Temperature Toughness Tests for Metals
78	Fig. 323.2.2A Minimum Temperatures Without Impact Testing for Carbon Steel Materials
79	Table 323.2.2A Tabular Values for Minimum Temperatures Without Impact Testing for Carbon Steel Materials
80	Fig. 323.2.2B Reduction in Lowest Exemption Temperature Without Impact Testing
81	Table 323.3.1 Impact Testing Requirements for Metals
82	Table 323.3.4 Charpy Impact Test Temperature Reduction
83	Table 323.3.5 Minimum Required Charpy V-Notch Impact Values
84	325 MATERIALS — MISCELLANEOUS
85	Chapter IV Standards for Piping Components 326 DIMENSIONS AND RATINGS OF COMPONENTS
86	Table 326.1 Component Standards
89	Chapter V Fabrication, Assembly, and Erection 327 GENERAL 328 WELDING AND BRAZING
91	Fig. 328.3.2 Typical Backing Rings and Consumable Inserts Fig. 328.4.2 Typical Butt Weld End Preparation Fig. 328.4.3 Trimming and Permitted Misalignment
92	Fig. 328.4.4 Preparation for Branch Connections
93	Fig. 328.5.2A Fillet Weld Size Fig. 328.5.2B Typical Details for Double-Welded Slip-On and Socket Welding Flange Attachment Welds Fig. 328.5.2C Minimum Welding Dimensions for Socket Welding Components Other Than Flanges
94	Figs. 328.5.4A, B, C Typical Welded Branch Connections Fig. 328.5.4D Acceptable Details for Branch Attachment Welds Fig. 328.5.4E Acceptable Details for Branch Attachment Suitable for 100% Radiography
95	Fig. 328.5.4F Acceptable Details for Integrally Reinforced Branch Connections
96	330 PREHEATING
97	Fig. 328.5.5 Typical Fabricated Laps Table 330.1.1 Preheat Temperatures
98	331 HEAT TREATMENT
99	Table 331.1.1 Postweld Heat Treatment
100	Table 331.1.2 Alternate Postweld Heat Treatment Requirements for Carbon and Low Alloy Steels, P-Nos. 1 and 3
101	Table 331.1.3 Exemptions to Mandatory Postweld Heat Treatment
103	332 BENDING AND FORMING 333 BRAZING AND SOLDERING
104	335 ASSEMBLY AND ERECTION
105	Fig. 335.3.3 Typical Threaded Joints Using Straight Threads
106	Chapter VI Inspection, Examination, and Testing 340 INSPECTION 341 EXAMINATION
108	Table 341.3.2 Acceptance Criteria for Welds — Visual and Radiographic Examination
109	Criterion Value Notes for Table 341.3.2
111	Fig. 341.3.2 Typical Weld Imperfections
113	342 EXAMINATION PERSONNEL 343 EXAMINATION PROCEDURES 344 TYPES OF EXAMINATION
115	345 TESTING
118	346 RECORDS
119	Chapter VII Nonmetallic Piping and Piping Lined With Nonmetals A300 GENERAL STATEMENTS PART 1 CONDITIONS AND CRITERIA A301 DESIGN CONDITIONS A302 DESIGN CRITERIA
121	PART 2 PRESSURE DESIGN OF PIPING COMPONENTS A303 GENERAL A304 PRESSURE DESIGN OF PIPING COMPONENTS
122	PART 3 FLUID SERVICE REQUIREMENTS FOR PIPING COMPONENTS A305 PIPE A306 FITTINGS, BENDS, MITERS, LAPS, AND BRANCH CONNECTIONS
123	A307 VALVES AND SPECIALTY COMPONENTS A308 FLANGES, BLANKS, FLANGE FACINGS, AND GASKETS A309 BOLTING PART 4 FLUID SERVICE REQUIREMENTS FOR PIPING JOINTS A310 GENERAL A311 BONDED JOINTS IN PLASTICS
124	A312 FLANGED JOINTS A313 EXPANDED JOINTS A314 THREADED JOINTS A315 TUBING JOINTS A316 CAULKED JOINTS A318 SPECIAL JOINTS
125	PART 5 FLEXIBILITY AND SUPPORT A319 FLEXIBILITY OF NONMETALLIC PIPING
126	A321 PIPING SUPPORT PART 6 SYSTEMS A322 SPECIFIC PIPING SYSTEMS
127	PART 7 MATERIALS A323 GENERAL REQUIREMENTS
128	Table A323.2.2 Requirements for Low Temperature Toughness Tests for Nonmetals Table A323.4.2C Recommended Temperature Limits for Reinforced Thermosetting Resin Pipe
129	PART 8 STANDARDS FOR PIPING COMPONENTS A325 MATERIALS — MISCELLANEOUS A326 DIMENSIONS AND RATINGS OF COMPONENTS Table A323.4.3 Recommended Temperature Limits for Thermoplastics Used as Linings
130	Table A326.1 Component Standards
132	A327 GENERAL PART 9 FABRICATION, ASSEMBLY, AND ERECTION A328 BONDING OF PLASTICS
134	A329 FABRICATION OF PIPING LINED WITH NONMETALS
135	Fig. A328.5 Typical Plastic Piping Joints
136	A332 BENDING AND FORMING A334 JOINING NONPLASTIC PIPING A335 ASSEMBLY AND ERECTION
137	PART 10 INSPECTION, EXAMINATION, AND TESTING A340 INSPECTION A341 EXAMINATION A342 EXAMINATION PERSONNEL A343 EXAMINATION PROCEDURES
138	Table A341.3.2 Acceptance Criteria for Bonds A344 TYPES OF EXAMINATION A345 TESTING Table A341.3.2 Acceptance Criteria for Bonds
139	A346 RECORDS
140	Chapter VIII Piping for Category M Fluid Service M300 GENERAL STATEMENTS PART 1 CONDITIONS AND CRITERIA M301 DESIGN CONDITIONS M302 DESIGN CRITERIA PART 2 PRESSURE DESIGN OF METALLIC PIPING COMPONENTS M303 GENERAL M304 PRESSURE DESIGN OF METALLIC COMPONENTS PART 3 FLUID SERVICE REQUIREMENTS FOR METALLIC PIPING COMPONENTS M305 PIPE M306 METALLIC FITTINGS, BENDS, MITERS, LAPS, AND BRANCH CONNECTIONS
141	M307 METALLIC VALVES AND SPECIALTY COMPONENTS M308 FLANGES, BLANKS, FLANGE FACINGS, AND GASKETS
142	M309 BOLTING PART 4 FLUID SERVICE REQUIREMENTS FOR METALLIC PIPING JOINTS M310 METALLIC PIPING, GENERAL M311 WELDED JOINTS IN METALLIC PIPING M312 FLANGED JOINTS IN METALLIC PIPING M313 EXPANDED JOINTS IN METALLIC PIPING M314 THREADED JOINTS IN METALLIC PIPING M315 TUBING JOINTS IN METALLIC PIPING M316 CAULKED JOINTS M317 SOLDERED AND BRAZED JOINTS M318 SPECIAL JOINTS IN METALLIC PIPING PART 5 FLEXIBILITY AND SUPPORT OF METALLIC PIPING M319 FLEXIBILITY OF METALLIC PIPING M320 ANALYSIS OF SUSTAINED LOADS M321 PIPING SUPPORT PART 6 SYSTEMS M322 SPECIFIC PIPING SYSTEMS
143	PART 7 METALLIC MATERIALS M323 GENERAL REQUIREMENTS M325 MATERIALS — MISCELLANEOUS PART 8 STANDARDS FOR PIPING COMPONENTS M326 DIMENSIONS AND RATINGS OF COMPONENTS PART 9 FABRICATION, ASSEMBLY, AND ERECTION OF METALLIC PIPING M327 GENERAL M328 WELDING OF METALS
144	M330 PREHEATING OF METALS M331 HEAT TREATMENT OF METALS M332 BENDING AND FORMING OF METALS M335 ASSEMBLY AND ERECTION OF METALLIC PIPING PART 10 INSPECTION, EXAMINATION, TESTING, AND RECORDS OF METALLIC PIPING M340 INSPECTION M341 EXAMINATION M342 EXAMINATION PERSONNEL M343 EXAMINATION PROCEDURES M344 TYPES OF EXAMINATION M345 TESTING M346 RECORDS PARTS 11 THROUGH 20, CORRESPONDING TO CHAPTER VII
145	MA300 GENERAL STATEMENTS PART 11 CONDITIONS AND CRITERIA MA301 DESIGN CONDITIONS MA302 DESIGN CRITERIA PART 12 PRESSURE DESIGN OF NONMETALLIC PIPING COMPONENTS MA303 GENERAL MA304 PRESSURE DESIGN OF NONMETALLIC COMPONENTS PART 13 FLUID SERVICE REQUIREMENTS FOR NONMETALLIC PIPING COMPONENTS MA305 PIPE MA306 NONMETALLIC FITTINGS, BENDS, MITERS, LAPS, AND BRANCH CONNECTIONS MA307 VALVES AND SPECIALTY COMPONENTS MA308 FLANGES, BLANKS, FLANGE FACINGS, AND GASKETS MA309 BOLTING PART 14 FLUID SERVICE REQUIREMENTS FOR NONMETALLIC PIPING JOINTS MA310 GENERAL MA311 BONDED JOINTS MA312 FLANGED JOINTS MA313 EXPANDED JOINTS
146	MA314 THREADED JOINTS MA315 TUBING JOINTS IN NONMETALLIC PIPING MA316 CAULKED JOINTS MA318 SPECIAL JOINTS PART 15 FLEXIBILITY AND SUPPORT OF NONMETALLIC PIPING MA319 PIPING FLEXIBILITY MA321 PIPING SUPPORT PART 16 NONMETALLIC AND NONMETALLIC LINED SYSTEMS MA322 SPECIFIC PIPING SYSTEMS PART 17 NONMETALLIC MATERIALS MA323 GENERAL REQUIREMENTS PART 18 STANDARDS FOR NONMETALLIC AND NONMETALLIC LINED PIPING COMPONENTS MA326 DIMENSIONS AND RATINGS OF COMPONENTS PART 19 FABRICATION, ASSEMBLY, AND ERECTION O FNONMETALLIC AND NONMETALLIC LINED PIPING MA327 GENERAL MA328 BONDING OF PLASTICS MA329 FABRICATION OF PIPING LINED WITH NONMETALS MA332 BENDING AND FORMING MA334 JOINING NONPLASTIC PIPING MA335 ASSEMBLY AND ERECTION PART 20 INSPECTION, EXAMINATION, TESTING, AND RECORDS OF NONMETALLIC AND NONMETALLIC LINED PIPING MA340 INSPECTION MA341 EXAMINATION
147	MA342 EXAMINATION PERSONNEL MA343 EXAMINATION PROCEDURES MA344 TYPES OF EXAMINATION MA345 TESTING MA346 RECORDS
148	Chapter IX High Pressure Piping K300 GENERAL STATEMENTS PART 1 CONDITIONS AND CRITERIA K301 DESIGN CONDITIONS
149	K302 DESIGN CRITERIA
151	PART 2 PRESSURE DESIGN OF PIPING COMPONENTS K303 GENERAL K304 PRESSURE DESIGN OF HIGH PRESSURE COMPONENTS Table K302.3.3D Acceptable Severity Levels for Steel Castings
155	PART 3 FLUID SERVICE REQUIREMENTS FOR PIPING COMPONENTS K305 PIPE K306 FITTINGS, BENDS, AND BRANCH CONNECTIONS Table K305.1.2 Required Ultrasonic or Eddy Current Examination of Pipe and Tubing for Longitudinal Defects
156	K307 VALVES AND SPECIALTY COMPONENTS K308 FLANGES, BLANKS, FLANGE FACINGS, AND GASKETS K309 BOLTING PART 4 FLUID SERVICE REQUIREMENTS FOR PIPING JOINTS K310 GENERAL K311 WELDED JOINTS K312 FLANGED JOINTS K313 EXPANDED JOINTS K314 THREADED JOINTS
157	K315 TUBING JOINTS K316 CAULKED JOINTS K317 SOLDERED AND BRAZED JOINTS K318 SPECIAL JOINTS PART 5 FLEXIBILITY AND SUPPORT K319 FLEXIBILITY
158	K321 PIPING SUPPORT PART 6 SYSTEMS K322 SPECIFIC PIPING SYSTEMS PART 7 MATERIALS K323 GENERAL REQUIREMENTS
160	Table K323.3.1 Impact Testing Requirements
161	Fig. K323.3.3 Example of an Acceptable Impact Test Specimen
162	Table K323.3.5 Minimum Required Charpy V-Notch Impact Values
163	K325 MISCELLANEOUS MATERIALS PART 8 STANDARDS FOR PIPING COMPONENTS K326 REQUIREMENTS FOR COMPONENTS PART 9 FABRICATION, ASSEMBLY, AND ERECTION K327 GENERAL K328 WELDING
164	Table K326.1 Component Standards
165	K330 PREHEATING
166	K331 HEAT TREATMENT Fig. K328.4.3 Pipe Bored for Alignment: Trimming and Permitted Misalignment Fig. K328.5.4 Some Acceptable Welded Branch Connections Suitable for 100% Radiography
167	K332 BENDING AND FORMING
168	K333 BRAZING AND SOLDERING K335 ASSEMBLY AND ERECTION PART 10 INSPECTION, EXAMINATION, AND TESTING K340 INSPECTION K341 EXAMINATION
169	Table K341.3.2 Acceptance Criteria for Welds Table K341.3.2 Acceptance Criteria for Welds
170	K342 EXAMINATION PERSONNEL K343 EXAMINATION PROCEDURES K344 TYPES OF EXAMINATION
171	K345 LEAK TESTING
172	K346 RECORDS
173	Chapter X High Purity Piping U300 GENERAL STATEMENTS PART 1 CONDITIONS AND CRITERIA U301 DESIGN CONDITIONS PART 2 PRESSURE DESIGN OF PIPING COMPONENTS PART 3 FLUID SERVICE REQUIREMENTS FOR PIPING COMPONENTS U306 FITTINGS, BENDS, MITERS, LAPS, AND BRANCH CONNECTIONS U307 VALVES AND SPECIALTY COMPONENTS U308 FLANGES, BLANKS, FLANGE FACINGS, AND GASKETS
174	PART 4 FLUID SERVICE REQUIREMENTS FOR PIPING JOINTS U311 WELDED JOINTS U314 THREADED JOINTS U315 TUBING JOINTS PART 5 FLEXIBILITY AND SUPPORT U319 PIPING FLEXIBILITY PART 6 SYSTEMS PART 7 METALLIC MATERIALS Fig. U304.5.3 Blanks
175	PART 8 STANDARDS FOR PIPING COMPONENTS PART 9 FABRICATION, ASSEMBLY, AND ERECTION U327 GENERAL U328 WELDING U330 PREHEATING U331 HEAT TREATMENT U332 BENDING AND FORMING U333 BRAZING AND SOLDERING U335 ASSEMBLY AND ERECTION
176	Fig. U335.7.1 Face Seal Joints Fig. U335.8A Hygienic Clamp Joint Assembly
177	PART 10 INSPECTION, EXAMINATION, AND TESTING U340 INSPECTION U341 EXAMINATION U342 EXAMINATION PERSONNEL Fig. U335.8B Hygienic Clamp Types Fig. U335.8C Hygienic Ferrules
178	U343 EXAMINATION PROCEDURES U344 TYPES OF EXAMINATION U345 TESTING U345.9 Alternative Leak Test U346 RECORDS
179	PART 11 HIGH PURITY PIPING IN CATEGORY M FLUID SERVICE UM300 GENERAL STATEMENTS UM307 METALLIC VALVES AND SPECIALTY COMPONENTS UM322 SPECIFIC PIPING SYSTEMS UM328 WELDING OF MATERIALS UM335 ASSEMBLY AND ERECTION OF METALLIC PIPING UM341 EXAMINATION UM345 TESTING
180	APPENDIX A ALLOWABLE STRESSES AND QUALITY FACTORS FOR METALLIC PIPING AND BOLTING MATERIALS
181	Specification Index for Appendix A
184	NOTES FOR TABLES A- 1, A- 1M, A- 1A, A- 1B, A- 2, AND A- 2M
188	Table A- 1 Basic Allowable Stresses in Tension for Metals Iron
189	Carbon Steel
197	Low and Intermediate Alloy Steel
205	Stainless Steel
219	Copper and Copper Alloy
223	Nickel and Nickel Alloy
233	Titanium and Titanium Alloy
235	Aluminum Alloy
241	Table A-1M Basic Allowable Stresses in Tension for Metals (Metric) Fe
243	Carbon steel
253	Low and Intermediate Alloy Steel
263	Stainless Steel
295	Copper and Copper Alloy
301	Nickel and Nickel Alloy
329	Titanium and Titanium Alloy
331	Zirconuium and Zirconium Alloy
333	Aluminum alloy
351	Table A-1A Basic Casting Quality Factors, Ec
352	Table A-1B Basic Quality Factors for Longitudinal Weld Joints in Pipes, Tubes, and Fittings, Ej
355	Table A- 2 Design Stress Values for Bolting Materials
356	Table A- 2 Design Stress Values for Bolting Materials
365	Table A-2M Design Stress Values for Bolting Materials (Metric)
381	APPENDIX B STRESS TABLES AND ALLOWABLE PRESSURE TABLES FOR NONMETALS
382	Specification Index for Appendix B
383	NOTES FOR APPENDIX B TABLES
387	APPENDIX C PHYSICAL PROPERTIES OF PIPING MATERIALS NOTE FOR APPENDIX C TABLES
401	APPENDIX D FLEXIBILITY AND STRESS INTENSIFICATION FACTORS
405	APPENDIX E REFERENCE STANDARDS
411	APPENDIX F PRECAUTIONARY CONSIDERATIONS F300 GENERAL F301 DESIGN CONDITIONS F304 PRESSURE DESIGN
412	F307 VALVES F308 FLANGES AND GASKETS F309 BOLTING F312 FLANGED JOINTS F321 PIPING SUPPORT F322 DESIGN CONSIDERATIONS FOR SPECIFIC SYSTEMS
413	F323 MATERIALS
414	F331 HEAT TREATMENT
415	F335 ASSEMBLY AND ERECTION F345 TESTING FA323 MATERIALS FU315 HYGIENIC CLAMP JOINTS
416	APPENDIX G SAFEGUARDING G300 SCOPE
418	APPENDIX H SAMPLE CALCULATIONS FOR BRANCH REINFORCEMENT H300 INTRODUCTION (METRIC) H301 EXAMPLE 1 H302 EXAMPLE 2
420	H303 EXAMPLE 3
421	H304 EXAMPLE 4 H305 EXAMPLE 5 (Not Illustrated)
422	H310 INTRODUCTION (U. S. CUSTOMARY) H311 EXAMPLE 1 H312 EXAMPLE 2
424	H313 EXAMPLE 3
425	H314 EXAMPLE 4 H315 EXAMPLE 5 (Not Illustrated)
427	APPENDIX J NOMENCLATURE
441	APPENDIX K ALLOWABLE STRESSES FOR HIGH PRESSURE PIPING Specification Index for Appendix K
442	NOTES FOR APPENDIX K TABLE
443	Table K- 1 Allowable Stresses in Tension for Metals for Chapter IX
444	Table K- 1 Allowable Stresses in Tension for Metals for Chapter IX
455	APPENDIX L ALUMINUM ALLOY PIPE FLANGES L300 GENERAL L301 PRESSURE– TEMPERATURE RATINGS L302 MARKING L303 MATERIALS
457	L304 DIMENSIONS AND FACINGS L305 DESIGN CONSIDERATIONS
458	APPENDIX M GUIDE TO CLASSIFYING FLUID SERVICES
460	APPENDIX N APPLICATION OF ASME B31.3 INTERNATIONALLY N100 INTRODUCTION N200 COMPLIANCE WITH THE EUROPEAN PRESSURE EQUIPMENT DIRECTIVE ( PED)
461	APPENDIX P DELETED
462	APPENDIX Q QUALITY SYSTEM PROGRAM
463	APPENDIX S PIPING SYSTEM STRESS ANALYSIS EXAMPLES S300 INTRODUCTION S301 EXAMPLE 1: CODE COMPLIANT PIPING SYSTEM
467	S302 EXAMPLE 2: ANTICIPATED SUSTAINED CONDITIONS CONSIDERING PIPE LIFT- OFF
470	S303 EXAMPLE 3: MOMENT REVERSAL
476	APPENDIX V ALLOWABLE VARIATIONS IN ELEVATED TEMPERATURE SERVICE V300 APPLICATION V300.1 Definitions V301 DESIGN BASIS V302 CRITERIA V303 PROCEDURE
477	V304 EXAMPLE
479	APPENDIX X METALLIC BELLOWS EXPANSION JOINTS X300 GENERAL X301 PIPING DESIGNER RESPONSIBILITIES
480	X302 EXPANSION JOINT MANUFACTURER RESPONSIBILITIES
484	APPENDIX Z PREPARATION OF TECHNICAL INQUIRIES Z300 INTRODUCTION Z301 REQUIREMENTS Z302 SUBMITTAL
486	INDEX1
499	NOTES FOR INDEX
500	ASME B31.3 INTERPRETATIONS VOLUME 24
501	B31.3
513	NUMERICAL INDEX
519	SUBJECT INDEX
528	B31.3 Code Cases
529	B31 CASE 180 Leak Testing of Subassemblies of Jacketed Piping for Use in ASME B31.3 Piping Systems
530	B31 CASE 181 Use of Alternative Ultrasonic Examination Acceptance Criteria in ASME B31.3
534	B31 CASE 185 Use of Standard Helium Leak Test for a Vacuum-Only Piping System (Para. 345)
535	B31 CASE 188 Minimum Hydrostatic Test Pressure for ASME B31.3, Chapter IX (Para. K345.4.2)
536	B31 CASE 191 Cu–13Zn–1.1Ni–Si–Al Alloy Seamless Pipe and Tube
537	B31 CASE 193 Cu–5.5Zn–4Si Casting Alloy UNS No. C87600

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Standard Title	ASME B31.3 Process Piping
Published Code	ASME
Publication Date	2014
Pages Count	538

ASME B31.3 2014

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