Water pipes in a concrete floor

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Hampshire
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United Kingdom
We have a ground floor bathroom in an extension built in about 2003. The house is on a slope so the floor at the back is below ground level. I'm trying to fit a free-standing tap - ideally it would mount below ground level, but I'm willing to build a small plinth to accommodate the base if necessary.

The problem is the existing pipes, which appear to be embedded directly in what seems to be a solid floor. This doesn't sound great from an insulation or maintenance point of view. They have some kind of plastic coating which may be to protect them from corrosion, and no, one of them isn't even vertical. There is no insulation visible at the surface.

Can anyone tell, based on whatever is standard practice, whether these are likely to be buried directly in concrete? If so I really don't fancy trying to cut away a big enough opening and will just go with the plinth.

Thanks in advance!
 

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They look like plastic pipes to me with a metal ferrule on the end do you have any of the fittings that came off them to ID the make? Most plastic pipe systems tend not to be interchangeable.
I would say they are in concrete yes.
 
The coating you see is actually the pipe and the metal is a pipe insert to keep the pipe cylindrical, it looks like grey Hep2o with the older type pipe inserts you have and is badly scratched/ scored so better to get a tap with compression tails rather than pushfit.
 
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+2 - definitely grey plastic pipe in concrete. Could be old hep or polypipe.

Looks like they have already had compression couplers as you can see what looks like the olive mark in the first pic, that have then been cut off? Looks like the top of the diagonal saw mark on the right pipe. Did you remove the previous fitting?

As suggested you'll need to use compression fittings with some PTFE tape on the olives and see if it'll stay watertight.
 

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