... of main machine, machine bed, auxiliary machine, transfering device, B&T drum, back stitcher, Joint-less band servicer, Joint-less ... device, electric and pneumatic system etc. Main Parameter of two stage: First Stage Building MachineMachine type: LCY-1620 Building drum width: 290 ... : Φ480~Φ850mm Building drum expansible/collapse range: 70~650mm B&T drum width: Max350mm Belt width: 80~300mm Belt roll ...