Pipeline - WikipediaHDPE pipelines on a mine site in Australia A pipeline is a system of pipes for long-distance transportation of a liquid or gas, typically to a market area for consumption. The latest data from 2014 gives a total of slightly less than 2,175,000 miles (3,500,000 km) of pipeline in 120 countries around the world.[1] The United States had 65%, Russia had 8%, and Canada had 3%, thus 76% of all pipeline
