CPVC is the acronym for Chlorinated Polyvinyl Chloride and is the chlorination process that changes the chemical makeup and the properties of the plastic. Some of the common uses of PVC and CPVC pipes include commercial uses such as housing underground wires, farm irrigation systems, plumbing, and drainage and sewage infrastructure; residential uses such as home irrigation systems, residential plumbing, drainage and sewage infrastructure; recreational uses such as makeshift tents and shaded seated areas, frames for greenhouses, carports and raised garden beds.