Double Layer Roll Forming Machine Shanghai:ALLSTAR MACHINERY:double layer forming machine,double sheet forming machine,double deck forming machine,double roofing forming machine,double cladding sheet forming machine: Manual Uncoiler; ID: 450mm-700mm; Feeding Width: 1200mm; Coils Weight:5—8T; Roll Stations: Upper 18stations; Down 18 stations; Forming speed: 8-13m/min; Computer adopt PLC, Panasonic; Computer operating board: Touch screen; Length tolerance: +/-1.5mm