Posted: 10/08/2016 at 16:34
All agricultural merchants, plumbing suppliers, building material suppliers, etc, etc sell blue water pipe. It can be used above ground or underground. It is easy to cut with a hack-saw.
Try not to over-think the problem. It will be plenty bendy. And it will outlast you unless you are a very, very young person.
Last edited: 10 August 2016 16:38:49