what is the difference between pvc upvc and cpvc?
UPVC and CPVC are two types of PVC. ... CPVC is Chlorinated PVC. Here, PVC is chlorinated with chlorine gas via free radical chlorination. The main difference between UPVC and CPVC is that UPVC is made without adding plasticizers whereas CPVC is made by adding plasticizers and undergoing the process of chlorination.