On Tue, 31 Jan 2017 05:34:42 -0800 (PST), wrote:

Dear sir hope you enjoy your time.
We want to know what is defence between water pipe and electrical conduit pipe.

Best wishes
Hamid

From a practical sense, conduit has U/V protection but gray conduit
may also have a slightly higher melting temperature. (90c) The whole
issue is really just the U/L listing for each. Water pipe is pressure
rated and conduit is impact strength rated. They may be exactly the
same but you can't prove it to an inspector.