... data Now,looking at the Aluminum Flexible Duct Forming Machine HJ600LR have some following technical problems: 1, aluminum foil, steel wire instability and uneven ... single wire, double steel wire, without steel double, single, insulation jacket,and others aluminium foils. This machine easy to operate ... .2KW Heater Power380V/50HZ Weigh450KG Machine Dimension3100*920*1700 Aluminum foil duct machine