For the transmission from the producer to the final customer, natural gas is fed into the pipeline or transmission network. As gas loses pressure over great distances, distinction is made between three natural gas pressure levels:
- Low pressure (<= 100 mbar)
- Medium pressure (> 100 mbar to <= 1 bar)
- High pressure (> 1 to 100 bar)
Due to the falling pressure over greater distances, municipal distribution networks usually have low-pressure pipelines, regional distribution networks have medium-pressure pipelines, and gas transmission companies have high-pressure networks.