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ASME B16.25

Buttwelding Ends

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Organization: ASME
Publication Date: 1 January 2012
Status: inactive
Page Count: 32
scope:

General

This Standard covers the preparation of buttwelding ends of piping components to be joined into a piping system by welding. It includes requirements forwelding 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:

(a) no backing rings

(b) split or noncontinuous backing rings

(c) solid or continuous backing rings

(d) consumable insert rings

(e) gas tungsten arc welding (GTAW) of the root pass

Details of preparation for any backing ring must be specified when ordering the component.

Document History

ASME B16.25
December 29, 2017
Buttwelding Ends
General 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...
ASME B16.25
January 1, 2012
Buttwelding Ends
General This Standard covers the preparation of buttwelding ends of piping components to be joined into a piping system by welding. It includes requirements forwelding bevels, for external and...
ASME B16.25
January 1, 2007
Buttwelding Ends
General This Standard covers the preparation of buttwelding ends of piping components to be joined into a piping system by welding. It includes requirements forwelding bevels, for external and...
ASME B16.25
November 30, 2003
Buttwelding Ends
General 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...
ASME B16.25
May 30, 1997
Buttwelding Ends
General 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...
ASME B16.25
January 1, 1992
Buttwelding Ends
A description is not available for this item.
ASME B16.25
October 8, 1986
BUTTWELDING ENDS
A description is not available for this item.
ASME B16.25
September 15, 1979
BUTTWELDING ENDS
This standard covers the preparation of buttwelding ends of pipe, valves, welding neck flanges, and pipe fittings, but is equally applicable to other piping components which are connected into the...
ASME B16.25
January 1, 1964
Buttwelding Ends
This standard covers the preparation of buttwelding ends of pipe, valves, welding neck flanges, and pipe fittings, but is equally applicable to other piping components which are connected into the...
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References

This document references:
ASME B16.5 - Pipe Flanges and Flanged Fittings NPS ½ Through NPS 24 Metric/Inch Standard
Published by ASME on January 1, 2020
(a) This Standard covers pressure–temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. Included are (1)...
This document references:
ASME B16.9 - Factory-Made Wrought Buttwelding Fittings
Published by ASME on October 29, 2018
General This Standard covers overall dimensions, tolerances, ratings, testing, and markings for factory-made wrought buttwelding fittings in sizes NPS 1∕2 through NPS 48 (DN 15 through DN 1200).
This document references:
ASME B16.47 - Large Diameter Steel Flanges NPS 26 Through NPS 60 Metric/Inch Standard
Published by ASME on January 1, 2020
This Standard covers pressure–temperature ratings, materials, dimensions, tolerances, marking, and testing for pipe flanges in sizes NPS 26 through NPS 60. Included are flanges with rating class...
This document references:
ASME B16.5 - Pipe Flanges and Flanged Fittings NPS ½ Through NPS 24 Metric/Inch Standard
Published by ASME on January 1, 2020
(a) This Standard covers pressure–temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. Included are (1)...
This document references:
ASME B16.9 - Factory-Made Wrought Buttwelding Fittings
Published by ASME on October 29, 2018
General This Standard covers overall dimensions, tolerances, ratings, testing, and markings for factory-made wrought buttwelding fittings in sizes NPS 1∕2 through NPS 48 (DN 15 through DN 1200).
This document references:
E29 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
April 1, 2022
This practice is intended to assist the various technical committees in the use of uniform methods of indicating the number of digits which are to be considered significant in specification limits,...
This document references:
ISO 9000 - Quality management systems — Fundamentals and vocabulary
Published by ISO on September 15, 2015
This International Standard describes the fundamental concepts and principles of quality management which are universally applicable to the following: — organizations seeking sustained success...
This document is referenced by:
NFPA 13DR HDBK - Automatic Sprinkler Systems for Residential Occupancies Handbook
Published by NFPA on January 1, 2016
As indicated in its scope, NFPA 13D applies only to one- and two-family dwellings, such as those shown in Exhibit I.1.2, and manufactured homes. The term manufactured home refers to a portable...
This document is referenced by:
API STD 608 - Metal Ball Valves—Flanged, Threaded, and Welding Ends
Published by API on January 1, 2020
This standard specifies the requirements for metal ball valves suitable for petroleum, petrochemical, and industrial applications— corresponding to the nominal pipe sizes in ASME B36.10M—that have: —...
This document is referenced by:
NFPA 13R - Standard for the Installation of Sprinkler Systems In Low-Rise Residential Occupancies
Published by NFPA on January 1, 2019
This standard shall cover the design and installation of automatic sprinkler systems for protection against fire hazards in residential occupancies up to and including four stories in height that are...
This document is referenced by:
NFPA 13D - Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes
Published by NFPA on January 1, 2019
This standard shall cover the design, installation, and maintenance of automatic sprinkler systems for protection against the fire hazards in one- and two-family dwellings and manufactured homes....
This document is referenced by:
ASME B16.34 - Valves — Flanged, Threaded, and Welding End
Published by ASME on January 1, 2020
This Standard applies to new construction and covers pressure–temperature ratings, dimensions, tolerances, materials, nondestructive examination requirements, testing, and marking for cast, forged,...
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