... feeding metal frame, leveler grooving roll DUCT MANUFACTURE AUTO-LINE 5 ( duct machine )Line combines a feeding metal frame, leveler grooving roll, ... flange forming machine, TDF hydraulic folder, auto cutting to length line, pipe bending machine , FN seam welder,notching and shearing ... ISO901:2000Please contant us at any time available for you,if you want for more details.Add:Building D,299 Tangming ...