ppr pipes and fittings Features:Material: Random Polypropylene;Size: 20mm to 160mm;Pressure Rating: 1.25Mpa, 1.6Mpa, 2.0Mpa, 2 ... supply, heating system including flooring heating, wall heating and radiating system, central air conditioning system, industrial liquids transportation ... : Smooth interior walls result in lower pressure loss and higher volume than metal pipes;Long Life: More than 50 years ...