Guidelines for welding and inspection of stainless alloy piping

• This Technical Information Paper outlines considerations for fit up, welding and inspection of circumferential butt welds made during shop spooling and field installation of stainless alloy pipe and fittings ; both thin wall (gauge) and thick wall (schedule).
• The stainless alloys included are austenitic stainless steels, duplex stainless steels, and nickel base alloys. It is assumed that:
  • The weld root will not normally be accessible for direct visual inspection or repair.
  • All circumferential butt welds will be made using filler metal.
  • A solution heat treatment will not be performed after welding .

It Provides information on:

• General considerations - codes and standards.
• Weld quality.
• Welding preparation.
• Welding.
• Fluxes.
• Posts weld cleaning.
• Inspection.

Who will benefit:

• Quality Manager.
• Engineers.
• Maintenance Manager.
• Inspectors.