Line consists of material feeding frame,leveler grooving rolls,hydraulic notching and punching square equipment and hydraulic folder.The electrical is controlled by computer.This control system has loop feedback system,with higher manufacturing precision and stability.The maximum work speed is ±16m/min,The length rolerance is ±0.5mm/m. The disgonal tolerance is ± 0.8mm/m.It is highly efficiency and automatic and also save material.it is very sutiable for mass production of square duct. HCH Duct Manufacture Auto-line ModelThickness(mm)Width (mm)Max feeding speed (m/min)Coler weight (kg)Size(mm)Weight(kg)HCH-0.6 1.213001660002700/2500x2000/1900x1200/12003600Note:We make machines for materialin different thickness,width and coil weight according to customer's requirement.