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Glossary:Service lines
The pipework from the main lines to the point of delivery of the gas into the installation pipework.
(Note: Service line is usually a short, small diameter pipeline that delivers gas from distribution main or transmission pipeline to the customer. They are usually made of steel pipe or steel tubing (either cathodically protected or not), or plastic (usually polyethylene, but sometimes PVC or other plastic), although copper tubing was also used in the past. Service lines can be installed under or above ground.[1]
Note: Cathodic protection is a technique used to mitigate the corrosion of a metal surface by making it act as an electrical cathode)