duct making machine , hydraulic vertical duct zipper

Specifications duct making machine, hydraulic vertical duct zipper,it will reduce the noise hazards for manual beat.

duct making machin, hydraulic vertical duct zipper       duct machine/manufacturer for HVAC duct  , hydraulic vertical duct zipper Suitable for rectangular ventilation pipeline quick commissure, smooth appearance, strong universality, raising the wind  pipe seam quality, reduce labor intensity, saves time and labor, reduce costs,. adopts heavy chassis, electric arc welding steel, highquality cylinder, commissure wheel group by quenching and grinding  processing, ensure the durable structure, commissure fast and accurate, with long service life.