PFI ES1
Internal Machining and Solid Machined Backing Rings for Circumferential Butt Welds
inactive
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| Organization: | PFI |
| Publication Date: | 1 January 1992 |
| Status: | inactive |
| Page Count: | 6 |
scope:
This Standard covers the dimensioning of solid machined backing rings and the internal machining of seamless and welded piping components for use with these rings.
Piping components must be internally machined to a close tolerance to accept solid machined backing rings. For this reason, solid machined backing rings are not recommended for use with piping components with wall thickness less than 0.562" (14mm).
Document History
September 1, 2010
INTERNAL MACHINING AND SOLID MACHINED BACKING RINGS FOR CIRCUMFERENTIAL BUTT WELDS
This Standard covers the dimensioning of solid machined backing rings and the internal machining of seamless and welded piping components for use with these rings.
Piping components must be...
September 1, 2004
INTERNAL MACHINING AND SOLID MACHINED BACKING RINGS FOR CIRCUMFERENTIAL BUTT WELDS
This Standard covers the dimensioning of solid machined backing rings and the internal machining of seamless and welded piping components for use with these rings.
Piping components must be...
January 1, 1992
Internal Machining and Solid Machined Backing Rings for Circumferential Butt Welds
A description is not available for this item.
PFI ES1
January 1, 1992
Internal Machining and Solid Machined Backing Rings for Circumferential Butt Welds
This Standard covers the dimensioning of solid machined backing rings and the internal machining of seamless and welded piping components for use with these rings.
Piping components must be...
January 1, 1986
INTERNAL MACHINING AND SOLID MACHINED BACKING RINGS FOR CIRCUMFERENTIAL BUTT WELDS
A description is not available for this item.
January 1, 1986
INTERNAL MACHINING AND SOLID MACHINED BACKING RINGS FOR CIRCUMFERENTIAL BUTT WELDS
A description is not available for this item.
January 1, 1983
INTERNAL MACHINING AND SOLID MACHINED BACKING RINGS FOR CIRCUMFERENTIAL BUTT WELDS
A description is not available for this item.
January 1, 1974
INTERNAL MACHINING AND SOLID MACHINED BACKING RINGS FOR CIRCUMFERENTIAL BUTT WELDS
A description is not available for this item.