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ASME B16.25

2017 Edition, December 29, 2017

Complete Document

Buttwelding Ends



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Referenced Items:

ANSI B16.28
ANSI B16.5
ASME B16.9
ASME B36.10M

Product Details:

  • Revision: 2017 Edition, December 29, 2017
  • Published Date: December 29, 2017
  • Status: Active, Most Current
  • Document Language: English
  • Published By: ASME International (ASME)
  • Page Count: 38
  • ANSI Approved: Yes
  • DoD Adopted: Yes

Description / Abstract:

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 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.

Application

This Standard applies to any metallic materials for which a welding procedure can be satisfactorily qualified but does not prescribe specific welding processes or procedures. Unless otherwise specified by the purchaser, it does not apply to welding ends conforming to ASME B16.5, B16.9, or B16.47.