Natural gas pipeline pigging operation: remove pipeline internal water, light oil, methane hydrate, ferric oxide, carbide dust, carbon disulfide and hydrogen sulfate and other corrosive substances; reduce the corrosion damage of corrosive substances on the inner wall of the pipe; to clear the pipeline to inspect pipe deformation; check valve; intact rate along; decrease working backpressure. The Central Plains pipeline pipeline operation: before the detection tube, low throughput intermittent operation of oil pipeline; pipeline internal clearance of condensate oil, wax and scaling, to reduce backpressure and wear resistance, reduce the temperature of the oil. Chemical material and edible oil lines: clean the pipe with polymerized materials; isolate different pipeline medium medium conveyance and measure pipe conveying pipe. New pipeline cleaning: sectional cleaning line test pressure: removal of debris, rust, water, drainage, exhaust. Total pipe pressure test: detection of pipeline deformation, construction quality. Exhaust before water pressure test, water drainage, dry, medium isolation. Water injection pipeline: remove scale and sediment. In the operation of the pipeline, according to the requirements of the operation of the corresponding series of pipe cleaning device. Clear edge tube cup and the inner wall of the pipeline elastic sealing, caused by pipe conveying medium pressure as the driving force to promote the Qing run along the pipeline tube. Rely on the pig itself or the machine with scraping and scouring action to clear the pipeline scaling or sediment. The cleaning tube device is driven by the gas, the liquid or the pipeline transportation medium, and is used for cleaning the pipeline. The Central Plains pipeline pipeline operation: before the detection tube, low throughput intermittent operation of oil pipeline; pipeline internal clearance of condensate oil, wax and scaling, to reduce backpressure and wear resistance, reduce the temperature of the oil.