How to judge whether the pexb aging resistance can reach 50+ years, the international standard stipulates the detection method, that is, the 110+℃ thermal stability test must be carried out. Use the data obtained from the high-temperature and short-time test to derive the low-temperature long-term working life. The test condition of PEX-b+ is that the test temperature is 110+℃, the ring stress is 2.5Mpa+, and the working time is 8760+ hours. (Note: According to the design pressure, select the S+ value of level 4+) and it can be deduced at 70+℃ Life span of 50+ years of continuous use.
