Is there a type of pex that can be used on radiators for a two pipe steam system? I am going to put back several radiators that had been removed from a house I recently bought and I wanted to use pex to pipe them in if possible. I have a brand new steam boiler and need to heat the whole house not parts of it as the previous owners tired to do. Any help would be gratefully appreciated even if it is a no you can not use pex.