HVAC duct line VI,the 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,pittsburgh forming, TDF flange and the angle iron flange ,automatically forming and bent into ”L“, ”U“, ”口“ shaped duct. Equipped with punching support air, common plate flange hole is optional.It has the advantages of high automation, high efficiency, labor saving and material saving.

Ventilation duct machine The air duct production line V is composed of feeding frame, leveling and beading, hydraulic punching point and square mouth, hydraulic shearer, movable pittsburgh forming machine,feeding platform, duplex flange machine, duplex angle iron flange machine (or double snap lock machine), servo feeding platform and TDF hydraulic folding. The computer control part adopts full computer control, bending with servo feeding, accurate positioning, especially when processing the bigger air duct, to ensure the bending accuracy.

TDC Flange Forming machine is the advanced technique in the world to manufacture square duct.It realizes standard,automation and mass production during producing rectangle flanges.

HVAC square metal folding machine comes into being serialization,including hydraulic,pneumatic,manual，which offers customers many choices.

HVAC Quintuple Groove Beading Machine press the sheet with no limited length and form several reinforced veins.The veins are to stiffen the plate.Clients can order the machine according to thickness,width and number of beads on metal sheet.

Whisper-Lock Seam Closer is available in the horizontal or vertical and close pittsburgh seams.Pittsburgh joint is commonly used  by manually hammering the margin of the seam against the duct wall(peening).It is suitable for plates of different thickness.To some extend,it can produce any size duct.

Convenient, fast, portable sewing machine is an ideal tool for efficient, rapid completion of pittsburgh commissure.

 HVAC Corner Inserting Machine is Pneumatically powered, inserts corners into single-end or both-end(optional) in seconds automatically and crimps them into place.

Angle iron flange punching and cutting including total 5 parts: Feeding device, major part, cutting device, hydraulic and electric system. PLC control system can improve accuracy , more effective and lower cost.

Circle angle iron forming machine employs coil  to form angle iron flange then cut off the processed work pieces with pleasant appearance and accurate dimensions. The equipment has advantage of compact structure and easy operation.Angle iron punching machine can be matched with the angle iron forming machine to produce perfect circle angle iron.

The 3-roller bending machine features the diamond structure and is used for thicker sheets. The upper roller can be lifted to facilitate plate removal.It is cut into two kinds:symmetric  and asymmetric.

Rotary machine used specialized rolling wheels to process the mental sheets into different shapes covering grooving,envelope line,flattening,cutting ,embossing and round elbow.