Corrosion resistance of steel lined PTFE pipes: Steel PTFE composite pipes can resist corrosion from almost all chemical media, including concentrated nitric acid and aqua regia, except for molten metal lithium, potassium, sodium, chlorine trifluoride, high temperature oxygen trifluoride, and high flow rate liquid fluorine. They can work for a long time at temperatures of 230 ℃ -250 ℃. Steel polyvinylidene fluoride or other polyvinylidene fluoride composite pipes have good corrosion resistance to halogens, halogenated hydrocarbons, strong oxidants, boiling acids, alkalis, and various organic solvents, but are not resistant to corrosion from fuming sulfuric acid, concentrated sulfuric acid and nitric acid, ketones, esters, amines above 90 ℃, and high-temperature sulfonating agents.

Steel lined PTFE pipes are made of ordinary carbon steel pipes as the matrix, lined with thermoplastic polytetrafluoroethylene plastic with excellent chemical stability, and processed by molding process. Steel lined PTFE pipelines are ideal for transporting high-temperature media such as strong acids, alkalis, industrial salts, and highly corrosive gases. They are widely used in industrial sectors such as petroleum, chemical, metallurgy, pharmaceuticals, electricity, pesticides, mines, and papermaking.

The characteristics of steel lined PTFE pipes are suitable for a wide range of applications, complete specifications, unique production processes, reliable and fast connection methods, complete and beautiful surface anti-corrosion measures, reasonable design of outer welded pipe wall thickness, and reasonable inner plastic pipe wall thickness to ensure smooth passage, with good corrosion resistance, energy conservation and environmental protection. Steel lined plastic pipes are based on ordinary carbon steel pipes and lined with thermoplastic pipes with excellent chemical properties. They are formed by cold drawing composite or rolling molding. They have both the mechanical properties of steel pipes and the corrosion resistance and scale inhibition of plastic pipes. Steel lined PTFE pipes are not easy to grow microorganisms, making them ideal pipelines for transporting media such as acid, alkali, salt, and corrosive gases.

Performance characteristics of steel lined PTFE pipes:

Medium working temperature: -25 ℃~+110 ℃

Medium working pressure: positive pressure -25MPa, negative pressure at room temperature is 94Pa

Application scope of steel lined composite pipes:

Steel lined PTFE pipes are suitable for the transportation of corrosive fluid media and industrial pure water, chemical pure water, ionized water, and non ionized water. They have a longer service life than stainless steel and can replace stainless steel pipes. They have a longer service life than lined rubber pipes and fiberglass pipes.

Corrosion resistance of steel lined PTFE pipelines: In addition to strong oxidizing acids such as concentrated nitric acid, fuming sulfuric acid, and chlorosulfonic acid, it can withstand most organic and inorganic acids, bases, and salts, and has good resistance to stress corrosion. It can withstand nitric acid, formic acid, acetic acid, hydrochloric acid, hydrobromic acid, dilute hydrofluoric acid, various concentrations of carbonic acid, boric acid, butyric acid, bases, and the vast majority of salts, mercury, air, NH3, CO2, CO, NO2, etc Multi functional corrosion of gases such as HCL.