nycpipewelder
Mechanical
I have recently passed a 309 GTAW/SMAW test consisting of using 309 tig wire on 2 carbon steel coupons I rooted,hot pass and filler with 309 GTAW. Then filled out with 309-16 stick wire. I am now going on to straight stainless steel I am looking for any helpful hints regarding inside purge of coupons, torch cfm's , amperage anything helpfull I received some good info on the 309 in the past which helped me qualify Thank you
