Flush and Ground Flush of Welds

A flush ground weld is one where the crown of the weld has been (or is to be) ground flush with the surface of the base metal. It it not normally done unless the crown interferes with further assembly. The weld symbol will contain the instruction "grind flush" or similar instruction if this is required,

Flushing of a weld is not a welding process that I am aware of. Flushing of piping systems with welded connections is commonly required to remove any contamination from the fabrication process including welding.

Looks like a language thing. Semantics. Both mean the same. Depends on country, language, etc.

On a lighter note, I have run beads that I wished I could flush. (American welding humor).

Out of interest, what is flushing of welds? :)

Removing any excess weld bead that is above the level of the parent material.

Weld bead flush with surface.

How would one define excessive weld on parent materials? Because you don't get a completely level surface between the weld and the parent metal, there will always be a little bit face of the weld above the surface.

In my opinion, flushing is grinding the finished weld smooth in order to remove any kinks or stress raisers.

Just my 2 cents.

With a slightly convex crown (or slightly concave for a fillet), i.e. fares in at 4:1 or less, there should not be a significant stress riser created. Most butt welds should have some weld metal above the surface of the base metal in order to assure thickness (t) is >/= to the base.

This additional metal is called "reinforcement," and should not be excessive. The max is 1/8" for t < 1" and, pipe under 18": and 3/16' for t >/= 1" pipe 18" and over. This applies to the root as well.

Unless there is some service requirement that makes it necessary to remove the crown, it should be left as welded.

Dear sir if I weld 6mm thk chequered plate on beam then is flush welding applicable.