... water systems. 2, thermal insulation. PPR pipe thermal conductivity coefficient of 0.21w/mk, only 1 / 200 to steel pipe. ... fittings production. Recycling materials does not exceed the total amount of 10%, does not affect product quality.Main Applications:1, ... , Central (concentration) air conditioning systems; 5, transfer or discharge of chemical media, such as industrial piping system. NOTE:IF YOU ...