There are five main types of plumbing pipe materials that are still in use today: copper, galvanized steel, polyvinyl chloride (PVC), acrylonitrile butadiene styrene (ABS), and cross-linked polyethylene (PEX). ... PVC Pipes. ... PEX Pipes. ... ABS Pipes. ... Copper Pipes. ... Cast Iron and Galvanized Steel Pipes. 30 Apr 2021