PTFE Lined Steel Pipe

PTFE lined pipes are advanced composite pipelines that combine the structural strength of steel or stainless steel with the exceptional chemical resistance and low-friction characteristics of PTFE (Polytetrafluoroethylene). PTFE is widely regarded as one of the most chemically inert materials available, capable of withstanding nearly all corrosive media, including strong acids, strong alkalis, organic solvents, and highly oxidizing chemicals. By integrating PTFE lining with a robust metal outer shell, PTFE lined pipes offer a safe, reliable, and long-lasting solution for the transportation of aggressive and high-purity fluids. Compared with traditional metal or plastic pipes, PTFE lined pipes deliver superior corrosion resistance, thermal stability, and cleanliness, making them indispensable for high-end industrial applications.

1.Exceptional Chemical Resistance: PTFE provides unmatched resistance to almost all chemicals, ensuring stable performance when conveying highly corrosive liquids such as sulfuric acid, hydrochloric acid, hydrofluoric acid, chlorine gas, and various organic solvents.

2.Excellent Temperature Tolerance: PTFE lined pipes operate reliably in a wide temperature range, typically from –50°C to +200°C, depending on the specific design. This makes them suitable for both cryogenic and high-temperature chemical processes.

3.Non-stick, Low-Friction Surface: The smooth inner surface greatly reduces fluid resistance, prevents scaling and contamination, and maintains high flow efficiency. It also minimizes material adhesion, ensuring cleaner and safer transport of media.

4.High Mechanical Strength: The steel body provides superior pressure resistance and mechanical durability, enabling the pipe to perform safely in high-pressure and high-impact working environments.

5.Long Service Life: The combination of PTFE’s chemical inertness and the pipe’s structural reinforcement significantly prolongs service life while reducing maintenance frequency and operational costs.

6.Hygienic & Anti-contamination Properties: PTFE is non-toxic and compliant with standards for high-purity and hygienic applications, making PTFE lined pipes ideal for pharmaceutical, food, and ultra-pure chemical processes.

7.Flexible Installation: PTFE lined pipes are available with a variety of connection forms, including fixed flanges, loose flanges, threaded ends, and welded ends, ensuring easy installation and replacement.

PTFE lined pipes are widely used across industries that handle extremely corrosive or high-purity media, such as:
• Chemical and petrochemical plants for strong acid/alkali transfer
• Pharmaceutical and biotechnology facilities requiring hygienic fluid transport
• Semiconductor and electronics industries for ultra-clean chemical distribution
• Power plants for handling corrosive cooling and treatment chemicals
• Environmental engineering for wastewater treatment involving aggressive media
• Chlor-alkali, dye, pesticide, and other chemical production industries

• Diameter Range: DN25 – DN1200, customizable according to project requirements
• Lining Materials: Virgin PTFE, conductive PTFE, or modified PTFE depending on media and safety needs
• Pipe Body: High-quality carbon steel or stainless steel (SS304, SS316L)
• Working Pressure: Typically up to 2.5 MPa; higher pressure designs available upon request
• Temperature Range: –50°C to +200°C (varies with lining thickness and pipe structure)
• Standard Length: 6 meters or manufactured based on specific engineering demands

PTFE lined pipes offer unmatched chemical resistance, temperature stability, and flow cleanliness, making them the ideal choice for transporting the most demanding and corrosive media in modern industrial systems. Their robust structure, long service life, and versatile application capabilities greatly reduce operational risks, lower maintenance costs, and ensure reliable, safe performance in even the most challenging chemical environments.