There's one word in that description that gives me a little pause- - - - -"welded". Are you willing to bet your life on that tubing, and/or the lives of the people who share the road with you? Most brake line tubing is "seamless". It might work OK, but be sure your liability insurance has a very high limit.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!