As a kind of environment-friendly continuous transport equipment, the circular tube belt conveyor is mainly used for transporting coal, colliery coal, coke, blending materials, sintered ore, mineral powder, petroleum coke, limestone, sand-gravel aggregate, acetylene sludge, humidifying dust, chemical fertilizer, salt, waste paper, phosphorus gypsum, sulfur-iron slag and all kinds of bulk materials. The circular tube belt conveyor has the same working principle with the ordinary belt conveyor; namely, make use of friction to move the conveyor belt and its materials. The most of components can be commonly used with the ordinary belt conveyor, however, the difference is that the conveyor belt shall be rolled up in the circular tube shape.