... service life. Pp-r pipe in working temperature, pressure (70 ° c P.N) 1. OMPa condition, use life ... general situation, and long-term continuous make temperature, optional < 70 degrees C = 1.25, On important occasions, and long- ... term continuous use of temperature, and experiment.it 70 degrees may be at higher temperature for a long ... r pipe water pipe valve Nanjing LeJie Chinese large scale manufacturer