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ASME B16.5 2013

ASME B16.5 2013

$98.04

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

Published By Publication Date Number of Pages
ASME 2013 240
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Upon request from industry and government, ASME has been defining piping safety since 1922. This Standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. Included are: flanges with rating class designations 150, 300, 400, 600, 900, and 1500 in sizes NPS 1/2 through NPS 24 and flanges with rating class designation 2500 in sizes NPS 1/2 through NPS 12, with requirements given in both metric and U.S. Customary units with diameter of bolts and flange bolt holes expressed in inch units; flanged fittings with rating class designation 150 and 300 in sizes NPS 1/2 through NPS 24, with requirements given in both metric and U.S. Customary units with diameter of bolts and flange bolt holes expressed in inch units; and flanged fittings with rating class designation 400, 600, 900, and 1500 in sizes NPS 1/2 through NPS 24 and flanged fittings with rating class designation 2500 in sizes NPS 1/2 through NPS 12 that are acknowledged in Non-Mandatory Appendix E in which only U.S. Customary units are provided. B16.5 is limited to flanges and flanged fittings made from cast or forged materials, and blind flanges and certain reducing flanges made from cast, forged, or plate materials. Also included in this Standard are requirements and recommendations regarding flange bolting, flange gaskets, and flange joints. This Standard is to be used in conjunction with equipment described in other volumes of the ASME B16 series of standards as well as with other ASME standards, such as the Boiler and Pressure Vessel Code and the B31 Piping Codes. Careful application of these B16 standards 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, owners, employers, users and others concerned with the specification, buying, maintenance, training and safe use of pipe flanges and flanged fittings with B16 equipment, plus all potential governing entities.

PDF Catalog

PDF Pages PDF Title
5 CONTENTS
8 FOREWORD
11 COMMITTEE ROSTER
12 CORRESPONDENCE WITH THE B16 COMMITTEE
13 SUMMARY OF CHANGES
15 1 SCOPE
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
16 1.9 Denotation
1.9.1 Pressure Rating Designation.
1.9.2 Size.
2 PRESSURE-TEMPERATURE RATINGS
2.1 General
2.2 Flanged Joints
2.3 Ratings of Flanged Joints
2.3.1 Basis.
2.3.2 Mixed Flanged Joints.
2.4 Rating Temperature
2.5 Temperature Considerations
2.5.1 General.
2.5.2 High Temperature.
2.5.3 Low Temperature.
2.6 System Hydrostatic Testing
17 2.7 Welding Neck Flanges
2.8 Straight Hub Welding Flanges
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
3.1 Nominal Pipe Size
3.2 Reducing Fittings
3.3 Reducing Flanges
4 MARKING
4.1 General
4.2 Identification Markings
4.2.1 Name.
18 Tables
Table 1A List of Material Specifications
20 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.
21 5 MATERIALS
5.1 General
5.1.1 Application.
5.1.2 Toughness.
5.1.3 Responsibility.
5.1.4 Cast Surfaces.
5.2 Mechanical Properties
5.3 Bolting
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.
22 Table 1B List of Bolting Specifications Applicable ASTM Specifications
23 5.4 Gaskets
5.4.1 General.
5.4.2 Gaskets for Low-Strength Bolting.
5.4.3 Gaskets for Class 150 Flanged Joints.
6 DIMENSIONS
6.1 Flanged Fittings Wall Thickness
6.1.1 Minimum Wall Thickness.
6.1.2 Fitting Local Areas.
6.2 Fitting Center-to-Contact Surface and Center-to-End
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
6.3.1 General.
6.3.2 Conversion.
6.3.3 Facing.
24 6.4 Flange Facings
6.4.1 General.
6.4.2 Other Than Lapped Joints.
6.4.2.1 Raised Face and Tongue Face.
6.4.2.2 Grooves.
6.4.3 Lapped Joint Flanges.
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.
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.
25 6.5 Flange Bolt Holes
6.6 Bolting Bearing Surfaces
6.7 Welding End Preparation for Welding Neck Flanges
6.7.1 Illustrations.
6.7.2 Contours.
6.7.3 Bores.
6.7.4 Other Welding Ends.
6.8 Reducing Flanges
6.8.1 Drilling, Outside Diameter, Thickness, and Facing Dimensions.
6.8.2 Hub Dimensions
6.8.2.1 Threaded, Socket Weld, and Slip-On Flanges.
6.8.2.2 Welding Neck Flanges.
6.9 Threaded Flanges
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
6.10.1 Dimensional Standards.
6.10.2 Bolt Lengths.
26 6.10.3 Bolting Recommendations.
6.11 Gaskets for Line Flanges
6.11.1 Ring Joint.
6.11.2 Contact Width.
6.11.3 Bearing Surface.
6.12 Auxiliary Connections
6.12.1 General.
6.12.2 Pipe Thread Tapping.
6.12.3 Sockets.
6.12.4 Butt Welding.
6.12.5 Bosses.
Table 1C Flange Bolting Dimensional Recommendations
27 6.12.6 Size.
6.12.7 Designating Locations.
7 TOLERANCES
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
7.5.1 Outside Diameter.
7.5.2 Inside Diameter.
7.5.3 Backing Ring Contact Surface.
28 7.5.4 Hub Thickness.
7.6 Length Through Hub on Welding Neck Flanges
7.7 Flange Bore Diameter
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
7.8.1 Bolt Circle Diameter.
7.8.2 Bolt Hole to Bolt Hole.
7.8.3 Bolt Circle Concentricity.
8 PRESSURE TESTING
8.1 Flange Test
8.2 Flanged Fitting Test
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.
29 Figures

Fig. 1 Bevel for Outside Thickness
Fig. 2 Bevel for Inside Thickness
Fig. 3 Bevel for Combined Thickness
Fig. 4 Straight Hub Welding Flanges
30 Fig. 5 Method of Designating Outlets of Reducing Fittings in Specifications (Flanged Fittings)
31 Fig. 6 End Flange Facings and Their Relationship to Flange Thickness and Center-to-End and End-to-End Dimensions
33 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
34 Fig. 9 Inside Contour for Use With Rectangular Backing Ring
Fig. 10 Inside Contour for Use With Taper Backing Ring
35 Fig. 11 Thread Length for Connection Tapping
Fig. 12 Socket Welding for Connections
Fig. 13 Bosses for Connections
Fig. 14 Butt Welding for Connections
36 Fig. 15 Method of Designating Location of Auxiliary Connections When Specified (Flanged Fittings)
37 Table 2-1.1 Pressure–Temperature Ratings for Group 1.1 Materials
38 Table 2-1.2 Pressure–Temperature Ratings for Group 1.2 Materials
39 Table 2-1.3 Pressure–Temperature Ratings for Group 1.3 Materials
40 Table 2-1.4 Pressure–Temperature Ratings for Group 1.4 Materials
41 Table 2-1.5 Pressure–Temperature Ratings for Group 1.5 Materials
42 Table 2-1.7 Pressure–Temperature Ratings for Group 1.7 Materials
43 Table 2-1.9 Pressure–Temperature Ratings for Group 1.9 Materials
44 Table 2-1.10 Pressure–Temperature Ratings for Group 1.10 Materials
45 Table 2-1.11 Pressure–Temperature Ratings for Group 1.11 Materials
46 Table 2-1.13 Pressure–Temperature Ratings for Group 1.13 Materials
47 Table 2-1.14 Pressure–Temperature Ratings for Group 1.14 Materials
48 Table 2-1.15 Pressure–Temperature Ratings for Group 1.15 Materials
49 Table 2-1.17 Pressure–Temperature Ratings for Group 1.17 Materials
50 Table 2-1.18 Pressure–Temperature Ratings for Group 1.18 Materials
51 Table 2-2.1 Pressure–Temperature Ratings for Group 2.1 Materials
52 Table 2-2.2 Pressure–Temperature Ratings for Group 2.2 Materials
53 Table 2-2.3 Pressure–Temperature Ratings for Group 2.3 Materials
54 Table 2-2.4 Pressure–Temperature Ratings for Group 2.4 Materials
55 Table 2-2.5 Pressure–Temperature Ratings for Group 2.5 Materials
56 Table 2-2.6 Pressure–Temperature Ratings for Group 2.6 Materials
57 Table 2-2.7 Pressure–Temperature Ratings for Group 2.7 Materials
58 Table 2-2.8 Pressure–Temperature Ratings for Group 2.8 Materials
59 Table 2-2.9 Pressure–Temperature Ratings for Group 2.9 Materials
60 Table 2-2.10 Pressure–Temperature Ratings for Group 2.10 Materials
61 Table 2-2.11 Pressure–Temperature Ratings for Group 2.11 Materials
62 Table 2-2.12 Pressure–Temperature Ratings for Group 2.12 Materials
63 Table 2-3.1 Pressure–Temperature Ratings for Group 3.1 Materials
Table 2-3.2 Pressure–Temperature Ratings for Group 3.2 Materials
64 Table 2-3.3 Pressure–Temperature Ratings for Group 3.3 Materials
Table 2-3.4 Pressure–Temperature Ratings for Group 3.4 Materials
65 Table 2-3.5 Pressure–Temperature Ratings for Group 3.5 Materials
66 Table 2-3.6 Pressure–Temperature Ratings for Group 3.6 Materials
67 Table 2-3.7 Pressure–Temperature Ratings for Group 3.7 Materials
68 Table 2-3.8 Pressure–Temperature Ratings for Group 3.8 Materials
69 Table 2-3.9 Pressure–Temperature Ratings for Group 3.9 Materials
70 Table 2-3.10 Pressure–Temperature Ratings for Group 3.10 Materials
Table 2-3.11 Pressure–Temperature Ratings for Group 3.11 Materials
71 Table 2-3.12 Pressure–Temperature Ratings for Group 3.12 Materials
72 Table 2-3.13 Pressure–Temperature Ratings for Group 3.13 Materials
73 Table 2-3.14 Pressure–Temperature Ratings for Group 3.14 Materials
74 Table 2-3.15 Pressure–Temperature Ratings for Group 3.15 Materials
75 Table 2-3.16 Pressure–Temperature Ratings for Group 3.16 Materials
76 Table 2-3.17 Pressure–Temperature Ratings for Group 3.17 Materials
Table 2-3.19 Pressure–Temperature Ratings for Group 3.19 Materials
77 Table 3 Permissible Imperfections in Flange Facing Finish for Raised Face and Large Male and Female Flanges
78 Table 4 Dimensions of Facings (Other Than Ring Joints, All Pressure Rating Classes)
80 Table 5 Dimensions of Ring-Joint Facings (All Pressure Rating Classes)
84 Table 6 Reducing Threaded and Slip-On Pipe Flanges for Classes 150 Through 2500
85 Table 7 Templates for Drilling Class 150 Pipe Flanges and Flanged Fittings
86 Table 8 Dimensions of Class 150 Flanges
89 Table 9 Dimensions of Class 150 Flanged Fittings
94 Table 10 Templates for Drilling Class 300 Pipe Flanges and Flanged Fittings
95 Table 11 Dimensions of Class 300 Flanges
98 Table 12 Dimensions of Class 300 Flanged Fittings
102 Table 13 Templates for Drilling Class 400 Pipe Flanges
103 Table 14 Dimensions of Class 400 Flanges
105 Table 15 Templates for Drilling Class 600 Pipe Flanges and Flanged Fittings
106 Table 16 Dimensions of Class 600 Flanges
108 Table 17 Templates for Drilling Class 900 Pipe Flanges and Flanged Fittings
109 Table 18 Dimensions of Class 900 Flanges
111 Table 19 Templates for Drilling Class 1500 Pipe Flanges
112 Table 20 Dimensions of Class 1500 Flanges
114 Table 21 Templates for Drilling Class 2500 Pipe Flanges
115 Table 22 Dimensions of Class 2500 Flanges
117 MANDATORY APPENDIX I THREADING OF PIPE FOR AMERICAN NATIONAL STANDARD THREADED FLANGES
119 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
207 MANDATORY APPENDIX III REFERENCES
210 NONMANDATORY APPENDIX A METHOD USED FOR ESTABLISHING PRESSURE-TEMPERATURE RATINGS
A-1 GENERAL CONSIDERATIONS
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
A-2.1 Rating Equation Class 300 and Higher
211 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
214 NONMANDATORY APPENDIX B LIMITING DIMENSIONS OF GASKETS OTHER THAN RING JOINT GASKETS
B-1 GASKET MATERIALS AND CONSTRUCTION
B-2 GASKET DIMENSIONS
216 NONMANDATORY APPENDIX C METHOD FOR CALCULATING BOLT LENGTHS1
218 NONMANDATORY APPENDIX D QUALITY SYSTEM PROGRAM
219 NONMANDATORY APPENDIX E DIMENSIONS OF CLASSES 400, 600, 900, 1500, AND 2500 FLANGED FITTINGS IN U.S. CUSTOMARY UNITS

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