The Tubular Drag Chain Conveyor,sometimes called a disc chain conveyor,is a mechanical system that operates within the confines of a pipe.Its feature is the stable property and saving the energy consumption in conveying system.It widely applies in the chemical industy,the chemical fiber,the agricultural chemicals ore,the food industry,the buiding materials profession and ect…It can contiguously convey powder,small particle and small lump and so on the bulk material,can convey in the level,the incline and the vertical.