Screw Conveyor: 1.large transfer capacity, simple structure 2.maintenance,high quality 3.used to convey coal,sand,cement Production Discription of Screw ConveyorIt is suitable for transferring all kinds of powder granular materials and small lump, such as coal, gravel, lump coal and sand, cement, cereal, etc..Not applicable to transport or perishable, viscous, easy caking materials. Main ...