Within a closed pipeline, chain links are used as driving elements to move the material along the pipeline. When transported horizontally, the material particles are pushed in the direction of motion by the chain links. When the internal friction between the material particles is greater than the external friction between the material and the pipe walls, the material moves forward along with the chain links, resulting in a stable material flow. During vertical transport, the material particles inside the pipe are pushed upward by the chain links; since the material at the lower level prevents the material above from sliding down, a lateral pressure is generated, which increases the internal friction of the material. When the internal friction between the material particles is greater than both the external friction between the material and the pipe walls as well as the weight of the material itself, the material is transported upward along with the chain links, thus forming a continuous material flow. Application areas: Fine chemicals: pigments, dyes, coatings, carbon black, titanium dioxide, iron oxide, ceramic powders, heavy calcium carbonate, light calcium carbonate, bentonite, molecular sieves, kaolin, silica gel powder, activated carbon, etc ; Pesticide ores: urea, ammonium chloride, ammonium bicarbonate, soda ash, solid pesticides, tungsten powder, pesticide additives, copper concentrate powder, coal powder, phosphate rock powder, aluminum oxide powder, etc ; Building materials: cement, clay, yellow sand, quartz sand, clay powder, silica, limestone powder, dolomite powder, wood chip powder, glass fiber, silicon dioxide, talcum powder, etc ; Food industry: flour, starch, grains, milk powder, food additives, etc.