Quote:
Originally Posted by GregWeld
Are you purging when you're welding up the tube to the flange or is it not necessary then??
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Greg, it's not necessary. With the primary tube being 16ga you won't have any problem burning through. Just make sure you use .045" filler rod. Anytime I use 18ga material I definitely back purge. Also, if I use a weld on collector I back purge because there is so much heat being placed in one area.