Moving a radiator

I would like to move a radiator across the room (a couple of metres), a friend told me there are some plastic pipes you can buy (instead of having to solder copper pipes), apparently they screw in to each other.

Does anyone know where I can get some of these pipes?
Are they safe to use?
Are they easy to fit?
They sound ideal for a DIY person, are they as good as they sound?

Many thanks in advance.

You can purchase these from Part Center,Plumb Base or ScrewFix these come as push fit plastic or screw fit and are safe to use

They are not "screw fit" they are "push fit" and on the "push fit" connector there is a screw cap to tighten once pushed in just for extra security.

Just letting you know before you go to the merchants and ask for some screw fit plumbing fittings.