PP-R pipes Jiuhao PP-R pipes are made of polypropylene, non-toxic, environmental friendly with technical support from Chinese Academy of Sciences. Features: 1. Jiuhao PP-R pipe does not rust, rot, or corrode. 2. Simple installation 3. Sanitation 4. Prevent cracking, flexibility, shock resistance 5. Heat resistant Application: Cold and hot water supply; residential or industrial use; pure water supply,pharmaceutical and etc.