HVAC Duct Forming Machine: HVAC Duct Forming Machine isa major equipment for TDF flange manufacture, especially for large-scale,standardized and automatic production. TDF flange manufacture system can be combined with other equipments such as duct manufacture line and plasma cutting machine to form a full automatic production line or combined with lockers and grooving and folding machines for on-site processing, thus it is the ideal product for construction enterprises. Features of TDF flange:mechanical process and easy operationmaterial and labor savingthe smooth tube structure, on account of the replacement of angle steel flange, has less weight and perfect outlookenhanced intensity and reduced thickness of the tube with the use of reinforcing ribeasy installation, high efficiency, low labor hour and cost Appearance of the Machine: The main technical data: