... lines2,Chemical and sewage treatment lines3, High/middle/low-pressure liquid delivery lines4,Brine injection lines5,Tertiary oil recovery ... injection (polymer,CO2,NaOH, etc.)lines6, Oil tank inlet and outlet lines, oil station used lines7, Oil production ... CO2, polyester, heat and etc.). Specification: Diameter DN40~DN600, Pressure 1Mpa~25MpaCapacity: 16production lines with 16,000T per year