CPVC pipes and fittings are resistant to internal and external corrosion, reducing the chances of water leaks or water flow restrictions. This corrosion-resistant property of CPVC makes them the best for transporting potable water. CPVC pipes do not scale or release harmful elements into the water like metal pipes. CPVC plumbing pipes are made from Chlorinated Polyvinyl Chloride, a thermoplastic material that can withstand higher temperatures and is more flexible and durable. These pipes are used for both hot and cold water passage and other industrial liquids.