Why does PVC pipe appear sink marks
Why does PVC pipe appear sink marks? The shrinkage marks on the surface of the PVC pipe will directly affect the appearance of the PVC profile, and even affect the cleanness of the corners, so it will leave regrets for the high-quality PVC pipes. So why does the PVC water pipe have sink marks? Causes of sink marks on PVC pipes 1. Shrinkage marks and vacuum degree. The same set [...]