Fiberglass reinforced plastics pipe High pressure FRP pipe is a new type of nonmetallic pipe ... lines2,Chemical and sewage treatment lines3, High/middle/low-pressure liquid delivery lines4,Brine injection lines5,Tertiary oil recovery ... wells, treatment wells (brine, chemical fluid or sewage), and injection wells (brine, CO2, polyester, heat and etc.). Specification: Diameter DN40~DN600, Pressure ...