HVAC duct line  Ⅶ ,with U-shaped structure not only saves the production site, but also reduces the delivery time of raw materials. The production efficiency is high (about 20-23 seconds per piece). The department fully automatically realizes the fixed size cutting, beading, automatic cutting ,the notching, single hem folding, pittsburgh forming, TDF flange and the angle iron flange ,automatically forming and bent into ”L“, ”U“, ”口“ shaped duct. Equipped with punching support air, TDF flange hole is optional. Pittsburgh is formed before bending the short side of the large size duct.C+S flange is optional.It has the advantages of high automation, high efficiency, labor saving and material saving.

Dcoiler and leveler line is used for different roll bending.It gets a flat plate of requirement width and length after decoil,leveler and cutting.It is combined with feeding shelf,decoiller,leveling,transporter,guiding device set-to- length device,plastic-cover device,shearing machine,transporting table.