A three-year study of corrugated high density polyethylene pipe used for drainage underneath a commuter rail line in Pennsylvania found "no discernible differences" in performance between the pipe ...

Household plumbing systems use PEX for pipes to supply water and carry away sewage. The term PEX stands for "crosslinked polyethylene." PEX piping is manufactured by melting high-density polyethylene ...

Springfield, Mo.-based United Poly Systems LLC is extruding a new line of HDPE pipe in the same sizes as traditional copper tubes and iron pipes for a range of applications, particularly water uses.

Plastics like CPVC deliver reliable, long-term, leak-free performance—as long as they have been installed and maintained ...