... high technology 4. less maintenance Screw Conveyor1. characteristics Screw conveyor novel structure, technical index is advanced, the head, tail ... ash, sand etc, material temperature 200 degrees Celsius. Screw conveyor is unfavorable conveying easy metamorphism, big viscosity, easy to ... spiral machine middle shaft type crane points:M1 -- for rolling bearings, using 80,000 hanging type, shaft cover ...