Screw Conveying Machine 1. reliable, durable 2. adaptable, easy to install 3. simple instructure Screw Conveying Machine 1. Operating principleLS type screw conveyor is a continuous conveying equipment. . Used to transport all kinds of powder and small pieces of material.Such as Coal, cement, sand, coal, grain, etc.It will use revolving the screw the material which will transport along the fixed ...