]] Pipeline transport is the transportation of goods through a pipe. Most commonly liquids and gases are sent but pneumatic tubes that transport solid capsules using compressed air are also used. As for gases and liquids any chemically stable substance can be sent through a pipeline. Therefore sewage slurry water or even beer pipelines exist; but arguably the most valuable are those transporting fuels: oil (oleoduct) natural gas (gas grid) and biofuels.
