ORIGINAL: lfinney
by suspending your pipe in the middle , you affect the resonance or vibe frequency i have seen the stingers on boats break, by being solid mounted rater than soft mount, mac's bakes their parts at 400 F for eight hours after all other processes, to restore near t6 temper, so weston is going to do it now as well........doh
Maybe they already do heat treat their parts after welding, but the guy who calibrates their lab oven is the same guy who calibrates their radar gun.
MJD