... of advanced technology to develop advanced HJTF600-LR Aluminum Flexible Duct Forming Machine, its appearance beautiful, simple structure,increased ventilation ... steel wire, without steel double, single, insulation jacket,and others aluminium foils. This machine easy to operate, fast and stable production ... .2KW Heater Power380V/50HZ Weigh450KG Machine Dimension3100*920*1700 Aluminum foil duct machine