... : 1, aluminum foil, steel wire instability and uneven glue. 2, debug problems. 3, uneven appearance of the steel wire 4 ... technology to develop advanced HJTF600-LR Aluminum Flexible Duct Forming Machine, its appearance beautiful, simple structure,increased ventilation facilities that ... .2mm Speed Main power5.2KW Heater Power380V/50HZ Weigh450KG Machine Dimension3100*920*1700 Spiral pipe making machine