AUTO DUCT LINE

Besides for the auto duct lines, we also manufacturer mold type spiral tubeformer together with hydraulic gorelocker, hydraulic flat oval duct forming machine, CNC plasma cutting machine, rotary beading machine,round duct seam locker and etc... 3. We own factory not just manufacturing duct lines, we have our own gear and roller factory,sheet metal... Preda Machine is specialized in HVAC automatic duct lines such as auto duct line 5,3, 2; spiral tubeformer and duct machines such as TDF flange machine, Pittsburgh seam locker,gorelocker