What is the difference between PPR cold water pipe and hot water pipe?
The wall thickness of the cold and hot water pipes is different, and the pressure is also different. The cold water pipe is 16 kilograms, and the hot water pipe is 25 kilograms. The thermal conductivity of the hot water pipe is one-200th of that of the metal pipe. The cold water pipe has no thermal conductivity. The hot water pipe can pass cold water but the cold water pipe cannot pass hot water.
The difference between hot and cold is mainly considered from the perspective of economic benefits, after all, the prices of the two are different. If economic conditions permit, it is also possible to use all hot water pipes.
