Duplex TDF flange forming machine can from flange at two sides of duct simultaneously. It's double-sided drivenand able to meet mobile requirements of high load . Comparing with single type, duplex type help us improve efficiency,reduce deliveny duration and save up labor. Our company would specially introduce high-strength rolling reels made of GCr15, a kind of steel which prolongs the machinelife by more than 5 times and outputs stainless steel TDF fange.