Stabi PPR-AL : Has a rigid and difficult to bend,opacity,small oxygen permeability coefficient and longitudinal shrinkage rate Properties:1. Have the advantage of both plastic pipe and metal pipe, higher intensity.2. Greatly reduced linear expansion coefficient, only 1/4 of that of PPR.3. Long service life, can used for over 50 years.4. Can work under higher temperature and higher pressure.5. A ...