... production lines 10,000 m / day Description:PPR-AL-PPR Stable Pipe is one kind of special composite ... assures sanitary performance for water supply, the size of interior layer is close to the general PPR. acting as ... Indoor/outdoor open air erected pipe;3. Pipe network for solar energy facility;4. Caliduct, floor, wall-applied ... (According to your requirement) multi-layer ppr-al-ppr pipe for construction