ASME B16.25 2022

$98.04

ASME B16.25-2022 Buttwelding Ends

Published By	Publication Date	Number of Pages
ASME	2022	32

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Description

This Standard covers the preparation of buttwelding ends of piping components to be joined into a piping system by welding. It includes requirements for welding bevels, for external and internal shaping of heavy-wall components, and for preparation of internal ends (including dimensions and tolerances). Coverage includes preparation for joints with the following: no backing rings; split or noncontinuous backing rings; solid or continuous backing rings; consumable insert rings; gas tungsten arc welding (GTAW) of the root pass.

PDF Catalog

PDF Pages	PDF Title
4	CONTENTS
5	FOREWORD
6	ASME B16 COMMITTEE ROSTER
7	CORRESPONDENCE WITH THE B16 COMMITTEE
9	ASME B16.25-2022 SUMMARY OF CHANGES
10	LIST OF CHANGES IN RECORD NUMBER ORDER
12	1 SCOPE 1.1 General 1.2 Application 1.3 Relevant Units 1.4 Size 1.5 Referenced Standards 1.6 Quality Systems 1.7 Convention 2 TRANSITION CONTOURS
13	3 WELDING BEVEL DESIGN 3.1 Bevels for Other Than GTAW Root Pass 3.2 Bevels for GTAW Root Pass 3.3 Outside Diameter at Welding Ends 4 PREPARATION OF INSIDE DIAMETER OF WELDING END 4.1 General 4.2 Dimension C
14	4.3 Exceptions 5 TOLERANCES 5.1 Dimension B 5.2 Welding Bevels, Root Face, and Dimension C 5.3 Dimension A 5.4 Wall Thickness
15	Figures Figure 2-1 Maximum Envelope for Welding End Transitions
16	Figure 3.1-1 Bevels for Wall Thickness Over 3 mm to 22 mm (0.12 in. to 0.88 in.), Inclusive
17	Figure 3.1-2 Weld Bevel Details for Wall Thickness Over 22 mm (0.88 in.)
18	Figure 3.2-1 Weld Bevel Details for GTAW Root Pass [Wall Thickness Over 3 mm to 10 mm (0.12 in. to 0.38 in.), Inclusive]
19	Figure 3.2-2 Weld Bevel Details for GTAW Root Pass [Wall Thickness Over 10 mm to 25 mm (0.38 in. to 1.0 in.), Inclusive]
20	Figure 3.2-3 Weld Bevel Details for GTAW Root Pass [Wall Thickness Over 25 mm (1.0 in.)]
21	Table Table 3.3-1 Dimensions of Welding Ends (See Figures 2-1 Through 3.2-3)
27	MANDATORY APPENDIX I REFERENCES
28	NONMANDATORY APPENDIX A QUALITY SYSTEM PROGRAM