Originally Posted by powerrodsmike
If I were you I would buy prebent mandrel bends and weld them together., It looks tricker that way with nickel/nickel/nickel tig welds and you can mock it up easier. You will never bend that big of tube as tight as you need it for IC plumbing without spending $$$. Not anyway that I know of anyway. If you really want to, call a metal fabrication job shop and see if they'll bend up that tube on a real mandrel bender to your specs. That way at least you can say it is your design.
Pre mandrel bent tubes are expensive.
I can get 20 ft. of ss321 for a little over $300.