ASME B31.3-2012

1 Process PipingASME Code for Pressure Piping, B31AN AMERICAN NATIONAL STANDARDASME (Revision of asme ) asme (Revision of asme )Process PipingASME Code for Pressure Piping, B31AN AMERICAN NATIONAL STANDARDT hree Park Avenue New York, NY 10016 USADate of Issuance: January 10, 2013 The next edition of this Code is scheduled for publication in 2014. This Code will become effective6 months after the Date of issues written replies to inquiries concerning interpretations of technical aspects of this , Code Cases, and errata are published on the asme Web site under the CommitteePages at as they are issued.

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5 Without the prior written permission of the American Society of Mechanical EngineersThree Park Avenue, New York, NY 10016-5990 Copyright 2013 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in xivIntroduction ..xviiiSummary of IScope and 1 Conditions and 2 Pressure Design of Piping Design of 3 Fluid Service Requirements for Piping , Bends, Miters, Laps, and Branch and Specialty , Blanks, Flange Facings, and 4 Fluid Service Requirements for Piping and Brazed 5 Flexibility and of Sustained Piping IVStandards for Piping and Ratings of VFabrication, Assembly, and and and and and VIInspection, Examination, and of.

6 VIIN onmetallic Piping and Piping Lined With 1 Conditions and 2 Pressure Design of Piping Design of Piping 3 Fluid Service Requirements for Piping , Bends, Miters, Laps, and Branch and Specialty , Blanks, Flange Facings, and 4 Fluid Service Requirements for Piping Joints in 5 Flexibility and of Nonmetallic Piping 8 Standards for Piping and Ratings of 9 Fabrication, Assembly, and of of Piping Lined With 101A332 Bending and 103A334 Joining Nonplastic 103A335 Assembly and 103 Part 10 Inspection, Examination.

7 And 104A342 Examination 104ivA343 Examination 104A344 Types of 106 Chapter VIIIP iping for Category M Fluid 107M300 General 107 Part 1 Conditions and 107M301 Design 107M302 Design 107 Part 2 Pressure Design of Metallic Piping 108M304 Pressure Design of Metallic 108 Part 3 Fluid Service Requirements for Metallic Piping 108M306 Metallic Fittings, Bends, Miters, Laps, and Branch 108M307 Metallic Valves and Specialty 108M308 Flanges, Blanks, Flange Facings, and 109 Part 4 Fluid Service Requirements for Metallic Piping 109M310 Metallic Piping.

8 109M311 Welded Joints in Metallic 109M312 Flanged Joints in Metallic 109M313 Expanded Joints in Metallic 109M314 Threaded Joints in Metallic 109M315 Tubing Joints in Metallic 109M316 Caulked 109M317 Soldered and Brazed 109M318 Special Joints in Metallic 109 Part 5 Flexibility and Support of Metallic 110M319 Flexibility of Metallic 110M321 Piping 110 Part 110M322 Specific Piping 110 Part 7 Metallic 110M323 General 110M325 Materials 110 Part 8 Standards for Piping 110M326 Dimensions and Ratings of 110 Part 9 Fabrication, Assembly, and Erection of Metallic 111M328 Welding of 111M330 Preheating of 111M331 Heat Treatment of 111M332 Bending and Forming of 111M335 Assembly and Erection of Metallic 111 Part 10 Inspection, Examination, Testing, and Records of Metallic 111M342 Examination 112M344 Types of 112vParts 11 Through 20.

9 Corresponding to Chapter 112MA300 General 112 Part 11 Conditions and 112MA301 Design 112MA302 Design 112 Part 12 Pressure Design of Nonmetallic Piping 112MA304 Pressure Design of Nonmetallic 112 Part 13 Fluid Service Requirements for Nonmetallic Piping 112MA306 Nonmetallic Fittings, Bends, Miters, Laps, and Branch 112MA307 Valves and Specialty 112MA308 Flanges, Blanks, Flange Facings, and 113 Part 14 Fluid Service Requirements for Nonmetallic Piping 113MA311 Bonded 113MA312 Flanged 113MA313 Expanded 113MA314 Threaded 113MA315 Tubing Joints in Nonmetallic 113MA316 Caulked 113MA318 Special 113 Part 15 Flexibility and Support of Nonmetallic 113MA319 Piping 113MA321 Piping 113 Part 16 Nonmetallic and Nonmetallic Lined 113MA322 Specific Piping 113 Part 17 Nonmetallic 113MA323 General 113 Part 18 Standards for

10 Nonmetallic and Nonmetallic Lined Piping 113MA326 Dimensions and Ratings of 113 Part 19 Fabrication, Assembly, and Erection of Nonmetallic and Nonmetallic 113MA328 Bonding of 114MA329 Fabrication of Piping Lined With 114MA332 Bending and 114MA334 Joining Nonplastic 114MA335 Assembly and 114 Part 20 Inspection, Examination, Testing, and Records of Nonmetallic andNonmetallic Lined 114MA342 Examination 114MA343 Examination of 114 Chapter IXHigh Pressure 115K300 General 115 Part 1 Conditions and 115K301 Design 115K302 Design 116viPart 2 Pressure Design of Piping 118K304 Pressure Design of High Pressure 118 Part 3 Fluid Service Requirements for Piping 122K306 Fittings, Bends, and Branch 122K307 Valves a