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uPVC are stronger and better than pipe but you have to check the company because most of the company's are calling the uPVC as a rigid PVC so it will be the same in this case , and for the CPVC it can take more heat so its used for the hot water lines .
hope that this is enough .
when you want to different among three types of pvc ,we must know this expressions
** pvc is poly vinyl chloride
**** upvc unplasticized poly vinyl chloride
**** cpvc chlorinated poly vinyl chloride
In short answer any real work in the field is not in the article
