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PFI ES-35: Nonsymmetrical Bevels and Joint Configurations for Butt Welds
Abstract: This Standard covers the end preparation of non-symmetrical bevels and joint configurations for butt welds in piping systems.
PFI ES-11: Permanent Marking on Piping Materials
Abstract: This standard describes recommended methods for marking on piping materials, application of welder's symbols or other data where not otherwise covered by the various Codes. These recommendations have proven to be both ...
PFI ES-3: FABRICATING TOLERANCES
Abstract: This standard covers general pipe shop fabricating tolerances for prefabricated piping assemblies.
PFI ES-31: Standard for Protection of Ends of Fabricated Piping Assemblies
Abstract: The purpose of this standard is to describe the minimum type of end protection the fabricator will provide on piping assemblies when the piping specification does not provide specific instructions and also to describe some ...
PFI ES-21: INTERNAL MACHINING AND FIT-UP OF GTAW ROOT PASS CIRCUMFERENTIAL BUTT WELDS
Abstract: This Standard covers the internal machining and fit-up tolerances for seamless and welded piping components when the gas tungsten-arc welding process is used for the root pass of circumferential butt welds.
PFI ES-7: Minimum Length and Spacing for Welded Nozzles
Abstract: This Standard covers the minimum recommended length, distance from open end on run, and spacing dimensions of adjacent welded nozzles.
PFI ES-1: INTERNAL MACHINING AND SOLID MACHINED BACKING RINGS FOR CIRCUMFERENTIAL BUTT WELDS
Abstract: 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 ...
Piping components must be internally machined to a ...
PFI ES-22: Recommended Practice for Color Coding of Piping Materials
Abstract: The intent of this standard is to provide a system for easy identification of piping materials by general material classifications.