... , recyclable,benefit to the environment7, good resistance to shock and impact8, resistance to all kinds of chemical liquid9, high ... compared to galvanized steel pipe fitting13, esay and fast installation, minimized installation time and cost14, over 50 years of service life ... of service life under normal conditions, 20 degreeProducts specifications and details :1, Spec:D20,D25,D322, ISO9001:2000 ...