Polyweld Plastics Cc Was Established On 09/09/1999 And Specializes In Plastic Welding Of Sheets, Pipes And Tanks Made Up Of HDPE, Polypropylene, PVC, And PVDF. Buttweld Joints - Pipe To Pipe. Hot Gas Welds - Jointing Of Sheets & Pipes. Extrusion Welding - Jointing Of Sheets & Pipes. Electrofuse Welding - Using Couplings To Join Pipes. Solvent Welding - PVC Jointing Of Pipes To Fittings.