Chemical properties of fluorine lined pipeline:
Atmospheric aging resistance: radiation resistance and low permeability: the surface and performance remain unchanged after long-term exposure to the atmosphere.
Incombustibility: the oxygen limit index is below 90.
Property: insoluble in strong acids, strong bases and organic solvents.
Oxidation resistance: it can resist the corrosion of strong oxidants.
Working characteristics of steel lined PTFE pipe:
Performance: medium working temperature: - 100 ℃ ~ - 250 ℃
Medium working pressure: positive pressure: 2.5MPa, negative pressure resistance 70kpa under normal temperature
Property: the steel polytetrafluoroethylene composite pipe can resist the corrosion of almost all chemical media, including concentrated and aqua regia, and can work at 230 ℃ - 250 ℃ for a long time, except for the addition of sodium fluoride, chlorine trifluoride, oxygen trifluoride under high temperature and liquid fluorine with high flow rate. Steel polyvinylidene fluoride or other polyvinylidene fluoride composite pipes have good corrosion resistance to halogen, halogenated hydrocarbon, strong oxidant, boiling acid, alkali and various organic solvents, but are not resistant to fuming acid, concentrated hot flow acid, ketone, ester, amine and high-temperature sulfonating agent above 90 ℃.
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