ah
TIG of SS pipe
I love it
pays great $ and clean and simple to weld
150-200 amps big range there
going into Kent mode
your union
union+EOR= epic fail
your GTAW SS pipe, a hot pass????????????
your not burning out wagon tracks
after the root all are fill passes
next you will be telling they are walking the cup fine
free hand it....run about 155 amps DCEN 1/8" cer tungsten, 1/8" 316LC SS filler
that is for the fill passes
btw keep your purge running for all passes
you did NOT say the pipe diameter or I would give you CFM for the argon, both shielding and purge
but your union and have an EOR
this sets up for an epic fail
sincerely,
Kent