ČSN EN 13480-6
Kovová průmyslová potrubí - Část 6: Doplňkové požadavky na potrubí uložené v zemi

ČSN EN 13480-6

This document specifies requirements for industrial piping either totally buried or partly buried and partly run in sleeves or similar protection. It is used in conjunction with the other six parts of EN 13480:2024 series.
Where buried piping subject to this standard connects to piping installed under other jurisdiction such as pipelines, the transition can be made at a closing element e.g. an isolating or regulating valve separating the two sections. This can be close to the boundary of the industrial site, but can be inside or outside the boundary.
Operating temperature up to 75 °C.
NOTE - For higher temperatures reference can be made to EN 13941-1:2019+A1:2021 and EN 13941-1:2019+A1:2021, but it is kept in mind, that CEN/TC 107 only deals with pre-insulated piping with temperatures up to 140 °C and diameters up to 800 mm, which is state of the art for these products.