UNDERGROUND HYDRANT FLEXIBLE PIPING

[121231234]

Hello friends,
I am putting you a querry which I have
We are planning to have FLEXIBLE underground piping for hydrant system for a combined cycle power project. What materials can we use for the same? At what depths can it be buried? Which standard paves way for it? Please explain me in detail? Why do we need it flexible piping for underground hydrant pipes? Please explain this also in detail.
with regards
121231234

 

[TravisMack]

What is your reason for wanting the piping flexible for the underground installation?