... Pp-r pipe in working temperature, pressure (70 ° c P.N) 1. OMPa condition, use life can reach ... pipe?1, pay attention to the pipeline using coefficient C (i.e. general safety coefficient) : general situation, ... long-term continuous make temperature, optional < 70 degrees C = 1.25, On important occasions, and long- ... than 40 degrees Celsius (cold) system, the selection P.N 1.0 ~ 160 MPa pipes, fittings, ...