Executive Summary For stable joint strength in PPR (Polypropylene Random Copolymer) pipe systems, maintaining the correct fusion temperature and welding parameters is non-negotiable. Incorrect temperature or insufficient heating time leads directly to leakage, joint failure, and warranty disputes. Below is a clean, manufacturable reference for technicians and QA teams. Optimal Fusion Temperature for PPR Pipes Material Recommended Heating Plate Temperature PPR (Polypropylene Random Copolymer) 250 °C – 270 °C PE / HDPE (for comparison) 200 °C – 220 °C Standard