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 ...

NEW: A Uni-Bell PVC Pipe Association official has a rebuttal to the Beyond Plastics report covered in this story. Read the detailed update here. Bennington, Vt.-based Beyond Plastics, a nonprofit ...

Recycling technology provider offers its plastic scrap density separator tanks in three sizes. In a Herbold Meckesheim tank, higher density plastics like polyethylene terephthalate (PET) and polyvinyl ...