... 1.0Mpa,1.25MPa, 1.6MPa, 2.0MPa ,2.5MPa 3).Colors: grey, white ,green,blue Features:Material: Random Polypropylene(Type ... , 2.0MPa ,2.5MPaColors: light grey, white or other colors on requestConnection: socket fusion joint, electro fusion joint or transition ... Heating system in buildings, including floor and wall heating system 3. Directly drinkable pure water supply system.4. Central air conditioning ...