The first thing you should about PPR pipes is that they have low thermal conductivity. This means that external temperatures don’t get to the liquid inside the pipe. Likewise, temperature from the liquid does not escape to the external environment. This is why PPR pipes minimize heat loss or heat gain during the transfer of cold and hot fluids. Using PPR pipes guarantees efficiency and reduced costs.http://www.oneplusplastic.com/plastic-pipe/ppr-pipe/