Tube Chain Conveyor, also called plate chain conveyor, is a mechanical system that operates in a seal pipe. Its feature is the stable property and saving the energy consumption in conveying system. It can contiguously convey bulky material, such as powder,fine particle and small lump and so on. It can convey in the level, the incline and the vertical. It widely applies in the chemical industry, the chemical fiber, the agricultural chemicals, ore, the food industry, the building materials, ect..