Long-distance pipelines are classified according to material properties: metal pipelines and non-metal pipelines.
1. Classification according to material properties: divided into metal pipes and non-metal pipes;
2. Classification according to design pressure: can be divided into vacuum pipelines (P100), P is MPa;
3. Classified by transportation temperature: low-temperature pipelines, normal-temperature pipelines, medium-temperature and high-temperature pipelines;
4. Classification according to the nature of the transmission medium: water supply and drainage pipelines, compressed air pipelines, hydrogen pipelines, oxygen pipelines, acetylene pipelines, heat pipelines, gas pipelines, fuel pipelines, highly toxic fluid pipelines, toxic fluid pipelines, acid-base pipelines, boiler pipelines , refrigeration pipelines, purified pure gas pipelines, pure water pipelines. The following mainly talks about gas (gas transmission) pipelines.
Gas pipeline transportation supporting equipment
(1) Pipelines from oil and gas field gas gathering stations to urban gas distribution stations or from oil and gas field compressor stations to urban gas distribution stations.
(2) The pipeline from the gas gathering station of the Hangkou coal gas plant to the city or industrial base repair station.
(3) The pipeline from the first-level pressure regulating and metering station of the natural gas transmission trunk line in the adjacent city to the urban gas distribution station.
(4) Pipelines from artificial gas plants, coking plants, petrochemical plants, petroleum refinery gas gathering stations or mine gas transfer stations in adjacent cities to urban storage and distribution stations.
