... -sales service 3)First-class quality 4)Hot products concrete screw conveyor Features:One, seamless high quality conveyor, the overall rigidity ... .2, using a forming screw blades, welded to the center tube, it can be completely balanced, double pitch design to reduce materials ... -8(9)LSY300-9(12,15)Metric diameter of screw (mm)160160185185237305Length of screw conveyer (m)2.54.568(9)8(9 ...