... which carrying certificate Like CE and AENOR3, Material: Random Polypropylene4, Pressure Rating: 2.5MPa5, Colors: white, green, grey, light brown or ... : low thermal conductivity which is only 1/1500 of brass pipe, and 1/250 of steel pipe10. Non-toxic: no heavy ... system13, Higher Flow Capacity: smooth interior walls result in lower pressure loss and higher volume than metal pipes14, Long life: more ...