Hot Selling High Effiency ,Best Price Screw Conveyor Small cross-sectional size Easy to ... load or unload Hot Selling High Effiency ,Best Price Screw Conveyor Description and Feature of Screw Conveyor Screw ... bulk material, such as clay powder, cement, concrete, sand, stone, grain, coal etc. Also can complete the gathering, stirring, ... spare parts: Hot Selling High Effiency ,Best Price Screw Conveyor