... non-chemical effect,non-oxygenation,non-corrosion,non-dirty and non-becterilum,reaching national standard2.Easy&reliable fittings:connected ... , heat drinking water ductwork (houses, hospitals, schools and foodstuff); swimming pools and tap water pipeline fixings2) Clean, pure water pipeline ... , solar water heater)5) Agriculture, gardens, virescence and farm PP-R Water Supply Pipe PN 1.0MPaPN 1.6MPaPN 2 ...