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eLibrary > ASME B16.5 Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard >

ASME B16.5 Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard, 2013

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ASME B16.5 Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard, 2013

CONTENTS
FOREWORD
COMMITTEE ROSTER
CORRESPONDENCE WITH THE B16 COMMITTEE
SUMMARY OF CHANGES
1 SCOPE [Go to Page]
1.1 General
1.2 References
1.3 Time of Purchase, Manufacture, or Installation
1.4 User Accountability
1.5 Quality Systems
1.6 Relevant Units
1.7 Selection of Materials
1.8 Convention
1.9 Denotation [Go to Page]
1.9.1 Pressure Rating Designation.
1.9.2 Size.
2 PRESSURE-TEMPERATURE RATINGS [Go to Page]
2.1 General
2.2 Flanged Joints
2.3 Ratings of Flanged Joints [Go to Page]
2.3.1 Basis.
2.3.2 Mixed Flanged Joints.
2.4 Rating Temperature
2.5 Temperature Considerations [Go to Page]
2.5.1 General.
2.5.2 High Temperature.
2.5.3 Low Temperature.
2.6 System Hydrostatic Testing
2.7 Welding Neck Flanges
2.8 Straight Hub Welding Flanges [Go to Page]
2.8.1 Hub Dimensions.
2.8.2 Length Through Hub.
2.8.3 Bore.
2.8.4 Hub End.
2.9 Multiple Material Grades
3 COMPONENT SIZE [Go to Page]
3.1 Nominal Pipe Size
3.2 Reducing Fittings
3.3 Reducing Flanges
4 MARKING [Go to Page]
4.1 General
4.2 Identification Markings [Go to Page]
4.2.1 Name.
4.2.2 Material.
4.2.3 Rating Designation.
4.2.4 Conformance.
4.2.5 Temperature.
4.2.6 Size.
4.2.7 Ring Joint Flanges.
4.2.8 Multiple Material Marking.
5 MATERIALS [Go to Page]
5.1 General [Go to Page]
5.1.1 Application.
5.1.2 Toughness.
5.1.3 Responsibility.
5.1.4 Cast Surfaces.
5.2 Mechanical Properties
5.3 Bolting [Go to Page]
5.3.1 General.
5.3.2 High-Strength Bolting.
5.3.3 Intermediate Strength Bolting.
5.3.4 Low-Strength Bolting.
5.3.5 Bolting to Gray Cast Iron Flanges.
5.4 Gaskets [Go to Page]
5.4.1 General.
5.4.2 Gaskets for Low-Strength Bolting.
5.4.3 Gaskets for Class 150 Flanged Joints.
6 DIMENSIONS [Go to Page]
6.1 Flanged Fittings Wall Thickness [Go to Page]
6.1.1 Minimum Wall Thickness.
6.1.2 Fitting Local Areas.
6.2 Fitting Center-to-Contact Surface and Center-to-End [Go to Page]
6.2.1 Design.
6.2.2 Standard Fittings.
6.2.3 Reducing Fittings.
6.2.4 Side Outlet Fittings.
6.2.5 Special Degree Elbows.
6.3 Flat Face Flanges [Go to Page]
6.3.1 General.
6.3.2 Conversion.
6.3.3 Facing.
6.4 Flange Facings [Go to Page]
6.4.1 General.
6.4.2 Other Than Lapped Joints. [Go to Page]
6.4.2.1 Raised Face and Tongue Face.
6.4.2.2 Grooves.
6.4.3 Lapped Joint Flanges. [Go to Page]
6.4.3.1 Raised Face.
6.4.3.2 Large Male and Female.
6.4.3.3 Tongue and Groove.
6.4.3.4 Ring Joint.
6.4.3.5 Lap Joint Facing Outside Diameters.
6.4.4 Blind Flanges.
6.4.5 Flange Facing Finish. [Go to Page]
6.4.5.1 Tongue and Groove and Small Male and Female.
6.4.5.2 Ring Joint.
6.4.5.3 Other Flange Facings.
6.4.6 Flange Facing Finish Imperfections.
6.5 Flange Bolt Holes
6.6 Bolting Bearing Surfaces
6.7 Welding End Preparation for Welding Neck Flanges [Go to Page]
6.7.1 Illustrations.
6.7.2 Contours.
6.7.3 Bores.
6.7.4 Other Welding Ends.
6.8 Reducing Flanges [Go to Page]
6.8.1 Drilling, Outside Diameter, Thickness, and Facing Dimensions.
6.8.2 Hub Dimensions [Go to Page]
6.8.2.1 Threaded, Socket Weld, and Slip-On Flanges.
6.8.2.2 Welding Neck Flanges.
6.9 Threaded Flanges [Go to Page]
6.9.1 Thread Dimensions.
6.9.2 Threads for Class 150 Flanges.
6.9.3 Threads for Class 300 and Higher Flanges.
6.9.4 Reducing Flange Thread Length.
6.9.5 Thread Gaging.
6.9.6 Assembly Using Power Equipment.
6.10 Flange Bolting Dimensions [Go to Page]
6.10.1 Dimensional Standards.
6.10.2 Bolt Lengths.
6.10.3 Bolting Recommendations.
6.11 Gaskets for Line Flanges [Go to Page]
6.11.1 Ring Joint.
6.11.2 Contact Width.
6.11.3 Bearing Surface.
6.12 Auxiliary Connections [Go to Page]
6.12.1 General.
6.12.2 Pipe Thread Tapping.
6.12.3 Sockets.
6.12.4 Butt Welding.
6.12.5 Bosses.
6.12.6 Size.
6.12.7 Designating Locations.
7 TOLERANCES [Go to Page]
7.1 General
7.2 Center-to-Contact Surfaces and Center-to-End Tolerances
7.3 Facings
7.4 Flange Thickness
7.5 Welding End Flange Ends and Hubs [Go to Page]
7.5.1 Outside Diameter.
7.5.2 Inside Diameter.
7.5.3 Backing Ring Contact Surface.
7.5.4 Hub Thickness.
7.6 Length Through Hub on Welding Neck Flanges
7.7 Flange Bore Diameter [Go to Page]
7.7.1 Lapped and Slip-On Flange Bores.
7.7.2 Counterbores, Threaded Flanges.
7.7.3 Counterbores, Socket Welding Flanges.
7.8 Drilling and Facing [Go to Page]
7.8.1 Bolt Circle Diameter.
7.8.2 Bolt Hole to Bolt Hole.
7.8.3 Bolt Circle Concentricity.
8 PRESSURE TESTING [Go to Page]
8.1 Flange Test
8.2 Flanged Fitting Test [Go to Page]
8.2.1 Shell Pressure Test.
8.2.2 Test Conditions.
8.2.3 Test Fluid.
8.2.4 Test Duration.
8.2.5 Acceptance.
Figures [Go to Page]
Fig. 1 Bevel for Outside Thickness
Fig. 2 Bevel for Inside Thickness
Fig. 3 Bevel for Combined Thickness
Fig. 4 Straight Hub Welding Flanges
Fig. 5 Method of Designating Outlets of Reducing Fittings in Specifications (Flanged Fittings)
Fig. 6 End Flange Facings and Their Relationship to Flange Thickness and Center-to-End and End-to-End Dimensions
Fig. 7 Bevel for Wall Thicknesses t From 5 mm to 22 mm Inclusive
Fig. 8 Bevel for Wall Thicknesses t Greater Than 22 mm
Fig. 9 Inside Contour for Use With Rectangular Backing Ring
Fig. 10 Inside Contour for Use With Taper Backing Ring
Fig. 11 Thread Length for Connection Tapping
Fig. 12 Socket Welding for Connections
Fig. 13 Bosses for Connections
Fig. 14 Butt Welding for Connections
Fig. 15 Method of Designating Location of Auxiliary Connections When Specified (Flanged Fittings)
Tables [Go to Page]
Table 1A List of Material Specifications
Table 1B List of Bolting Specifications Applicable ASTM Specifications
Table 1C Flange Bolting Dimensional Recommendations
Table 2-1.1 Pressure–Temperature Ratings for Group 1.1 Materials
Table 2-1.2 Pressure–Temperature Ratings for Group 1.2 Materials
Table 2-1.3 Pressure–Temperature Ratings for Group 1.3 Materials
Table 2-1.4 Pressure–Temperature Ratings for Group 1.4 Materials
Table 2-1.5 Pressure–Temperature Ratings for Group 1.5 Materials
Table 2-1.7 Pressure–Temperature Ratings for Group 1.7 Materials
Table 2-1.9 Pressure–Temperature Ratings for Group 1.9 Materials
Table 2-1.10 Pressure–Temperature Ratings for Group 1.10 Materials
Table 2-1.11 Pressure–Temperature Ratings for Group 1.11 Materials
Table 2-1.13 Pressure–Temperature Ratings for Group 1.13 Materials
Table 2-1.14 Pressure–Temperature Ratings for Group 1.14 Materials
Table 2-1.15 Pressure–Temperature Ratings for Group 1.15 Materials
Table 2-1.17 Pressure–Temperature Ratings for Group 1.17 Materials
Table 2-1.18 Pressure–Temperature Ratings for Group 1.18 Materials
Table 2-2.1 Pressure–Temperature Ratings for Group 2.1 Materials
Table 2-2.2 Pressure–Temperature Ratings for Group 2.2 Materials
Table 2-2.3 Pressure–Temperature Ratings for Group 2.3 Materials
Table 2-2.4 Pressure–Temperature Ratings for Group 2.4 Materials
Table 2-2.5 Pressure–Temperature Ratings for Group 2.5 Materials
Table 2-2.6 Pressure–Temperature Ratings for Group 2.6 Materials
Table 2-2.7 Pressure–Temperature Ratings for Group 2.7 Materials
Table 2-2.8 Pressure–Temperature Ratings for Group 2.8 Materials
Table 2-2.9 Pressure–Temperature Ratings for Group 2.9 Materials
Table 2-2.10 Pressure–Temperature Ratings for Group 2.10 Materials
Table 2-2.11 Pressure–Temperature Ratings for Group 2.11 Materials
Table 2-2.12 Pressure–Temperature Ratings for Group 2.12 Materials
Table 2-3.1 Pressure–Temperature Ratings for Group 3.1 Materials
Table 2-3.2 Pressure–Temperature Ratings for Group 3.2 Materials
Table 2-3.3 Pressure–Temperature Ratings for Group 3.3 Materials
Table 2-3.4 Pressure–Temperature Ratings for Group 3.4 Materials
Table 2-3.5 Pressure–Temperature Ratings for Group 3.5 Materials
Table 2-3.6 Pressure–Temperature Ratings for Group 3.6 Materials
Table 2-3.7 Pressure–Temperature Ratings for Group 3.7 Materials
Table 2-3.8 Pressure–Temperature Ratings for Group 3.8 Materials
Table 2-3.9 Pressure–Temperature Ratings for Group 3.9 Materials
Table 2-3.10 Pressure–Temperature Ratings for Group 3.10 Materials
Table 2-3.11 Pressure–Temperature Ratings for Group 3.11 Materials
Table 2-3.12 Pressure–Temperature Ratings for Group 3.12 Materials
Table 2-3.13 Pressure–Temperature Ratings for Group 3.13 Materials
Table 2-3.14 Pressure–Temperature Ratings for Group 3.14 Materials
Table 2-3.15 Pressure–Temperature Ratings for Group 3.15 Materials
Table 2-3.16 Pressure–Temperature Ratings for Group 3.16 Materials
Table 2-3.17 Pressure–Temperature Ratings for Group 3.17 Materials
Table 2-3.19 Pressure–Temperature Ratings for Group 3.19 Materials
Table 3 Permissible Imperfections in Flange Facing Finish for Raised Face and Large Male and Female Flanges
Table 4 Dimensions of Facings (Other Than Ring Joints, All Pressure Rating Classes)
Table 5 Dimensions of Ring-Joint Facings (All Pressure Rating Classes)
Table 6 Reducing Threaded and Slip-On Pipe Flanges for Classes 150 Through 2500
Table 7 Templates for Drilling Class 150 Pipe Flanges and Flanged Fittings
Table 8 Dimensions of Class 150 Flanges
Table 9 Dimensions of Class 150 Flanged Fittings
Table 10 Templates for Drilling Class 300 Pipe Flanges and Flanged Fittings
Table 11 Dimensions of Class 300 Flanges
Table 12 Dimensions of Class 300 Flanged Fittings
Table 13 Templates for Drilling Class 400 Pipe Flanges
Table 14 Dimensions of Class 400 Flanges
Table 15 Templates for Drilling Class 600 Pipe Flanges and Flanged Fittings
Table 16 Dimensions of Class 600 Flanges
Table 17 Templates for Drilling Class 900 Pipe Flanges and Flanged Fittings
Table 18 Dimensions of Class 900 Flanges
Table 19 Templates for Drilling Class 1500 Pipe Flanges
Table 20 Dimensions of Class 1500 Flanges
Table 21 Templates for Drilling Class 2500 Pipe Flanges
Table 22 Dimensions of Class 2500 Flanges
MANDATORY APPENDIX I THREADING OF PIPE FOR AMERICAN NATIONAL STANDARD THREADED FLANGES
MANDATORY APPENDIX II PRESSURE-TEMPERATURE RATINGS AND DIMENSIONAL DATA FOR CLASSES 150, 300, 400, 600, 900, 1500, AND 2500 FLANGES AND CLASSES 150 AND 300 FLANGED FITTINGS IN U.S. CUSTOMARY UNITS
MANDATORY APPENDIX III REFERENCES
NONMANDATORY APPENDIX A METHOD USED FOR ESTABLISHING PRESSURE-TEMPERATURE RATINGS [Go to Page]
A-1 GENERAL CONSIDERATIONS [Go to Page]
A-1.1 Introduction
A-1.2 Bolt Cross-Sectional Area
A-1.3 Flanged Fitting Wall Thickness
A-1.4 Material Properties
A-1.5 Material Groups
A-2 PRESSURE-TEMPERATURE RATING METHOD [Go to Page]
A-2.1 Rating Equation Class 300 and Higher
A-2.2 Ratings for Group No. 1 Materials
A-2.3 Method for Groups 2 and 3 Materials
A-2.4 Method for Class 150 -- All Materials
A-3 MAXIMUM RATINGS
NONMANDATORY APPENDIX B LIMITING DIMENSIONS OF GASKETS OTHER THAN RING JOINT GASKETS [Go to Page]
B-1 GASKET MATERIALS AND CONSTRUCTION
B-2 GASKET DIMENSIONS
NONMANDATORY APPENDIX C METHOD FOR CALCULATING BOLT LENGTHS1
NONMANDATORY APPENDIX D QUALITY SYSTEM PROGRAM
NONMANDATORY APPENDIX E DIMENSIONS OF CLASSES 400, 600, 900, 1500, AND 2500 FLANGED FITTINGS IN U.S. CUSTOMARY UNITS [Go to Page]

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ASME B16.5 Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard, 2013

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