Resistance to high temperature and high pressure. Resistance to erosion and the noiseless water hammer. Smooth inwall guaranteeing the least resisting force and the largest amount of water. A longevity of over 50 years. Clean and hygienic and oxygen-proof. Electrostatic resistance and high ignition point.

Frost resistant and earthquake-proof. Flexural resilience. Easily transferred and stored. Few joints and lower leakage rate. Easily installed yet applicable for numerous fields.