Screw conveyor spiral feeder: 1, Capacity:Q=20m3/h; 2, Material of blade: SS304. 3, CE standard. Screw conveyor spiral feeder:Screw conveyor is widely used in each field all long, such as building, metallurgy, chemical, power, coal, mechanism, light industry, food industry. It is suitable for transporting the materials of floury, granule and nubby, such as cement, coal dust, food, fertilizer, ...