... which can meet the standard of building drainage water system requirements.4 and long service life. Pp ... USES what?1, building of hot and cold water systems, including centralized heat-supply system,2 ... radiant heating system,Three, can be directly drinkable water supply system,4 and the central air conditioning ... ~ 160 MPa pipes, fittings, Used for hot water system PN2.0 MPa experiment.it choose pipe, ...