... w/mk, only for steel 1/200.3, good resistance to heat. Pp-r pipe vicat softening point 131.5 degrees Celsius ... ?1, building of hot and cold water systems, including centralized heat-supply system,2 the heating system, building, including floor, wall ... , transport or discharge of chemical industry etc in piping systems.How to secure and economic chooses pp-r pipe?1, pay attention ...