The difference between PPR hot and cold water pipes:
1. The difference of raw materials: the raw material of ppr cold water pipe is Yanshan 8101, and the raw material of ppr hot water pipe is Yanshan 4220;
2. Big difference in pressure: ppr cold water pipes generally have pressures of 1.25MPa and 1.6MPa, while ppr hot water pipes generally have pressures of 2.0MPa and 2.5MPa;
3. The difference between marking lines: ppr cold water pipes are blue marking lines, ppr hot water pipes are red marking lines