what exactly is it that you are working on a semi as far as i can tell but what is the fabed up part?

Hi! paydon mercer here I am starting a new welding business and could use all the helpfull advice i can get i learned to weld back in 2013 at lincoln tech. since then ive built trains,drill bits for the oil field, pump trailors for fracking and just recently left a place where i built the fab shop f...