CWP Machinery manufactures spiral conveyors in various diameter, various length, and various types according to the purpose from carbon steel or stainless steel materials. Chain Conveyors It is used for the high capacity transport of the granule materials in narrow space, in short or long distance. It usually operates in the galleries of the underground mining firms. It is durable through its driving gear, pads, and conveyor chutes of high quality steel against corrosion.