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  • PTFE Lined Coil
  • PTFE Lined Coil
  • PTFE Lined Coil
  • PTFE Lined Coil
PTFE Lined CoilPTFE Lined CoilPTFE Lined CoilPTFE Lined Coil

PTFE Lined Coil

Medium working temperature: -100℃~-250℃
Medium working pressure: positive pressure: 2.5MPa
Negative pressure resistance at normal temperature: 70KPa
Corrosion resistance: Resistant to chemical media, including concentrated nitric acid and aqua regia.


Polytetrafluoroethylene (PTFE) Lined Coils, widely recognized as "The King of Plastics," stand out in the industry for their unparalleled temperature resistance and corrosion resistance capabilities. These innovative products embody the pinnacle of chemical engineering technology, offering a robust solution for handling highly aggressive and corrosive substances. The unique properties of PTFE, including its virtually universal chemical resistance, exceptional thermal stability, and non-stick surface, make it an indispensable material in a broad range of industrial applications, from chemical processing to pharmaceuticals and beyond. The introduction of PTFE Lined Coils has revolutionized the way industries deal with challenging fluids by providing a reliable and durable means of containment and transport.

Product Description

PTFE Lined Coils are expertly engineered to combine the strength of steel with the chemical inertness of PTFE, offering a superior solution for transporting corrosive substances. The construction process involves lining the interior surface of metal pipes with a seamless PTFE liner, creating a barrier that prevents direct contact between the pipe material and the transported medium. This lining technique not only significantly enhances the pipe's resistance to chemical attack but also maintains the integrity of the conveyed substance by eliminating contamination risks.

The process of lining involves careful selection of high-quality PTFE material, which is then molded and sintered to form a liner that perfectly matches the inner geometry of the pipe. This liner is securely fitted inside the pipe, often with the aid of specialized bonding agents or mechanical methods to ensure a permanent, leak-proof seal. The result is a composite structure that leverages the mechanical strength of the outer metal pipe to withstand external pressures and impacts, while the inner PTFE lining provides a smooth, inert surface that resists a wide spectrum of chemicals at temperatures ranging from -100°C to 250°C.

PTFE Lined Coils are particularly advantageous in applications involving harsh chemical environments where traditional materials would rapidly degrade. Their construction ensures that they can handle a variety of challenging substances, including strong acids like nitric acid, sulfuric acid, and hydrofluoric acid, as well as bases, solvents, and other aggressive chemicals without compromise. Moreover, the non-stick properties of PTFE greatly simplify cleaning and maintenance procedures, further enhancing the longevity and reliability of these systems.

Key Features

Chemical Resistance

One of the standout attributes of PTFE Lined Coils is their extraordinary resistance to a wide array of chemical agents. Whether we're talking about strong acids, bases, or even organic solvents, these coils stand their ground, ensuring both longevity and consistent performance. This resistance is inherent to PTFE, which is virtually impervious to chemical attack. This means that industries can rely on these coils for transporting even the most aggressive substances without worrying about degradation or contamination.

Temperature and Pressure Resilience

Another feather in the cap of PTFE Lined Coils is their ability to perform under a broad spectrum of temperature and pressure conditions. Capable of withstanding temperatures ranging from a chilly -100°C up to a scorching 250°C, these coils are designed for versatility. Additionally, they're engineered to handle pressures up to 2.5MPa positively, while also being adept at resisting negative pressure up to 70KPa at room temperature. This makes them exceptionally suited for a variety of operational settings, ensuring reliability and safety.

Non-flammability and Oxidation Resistance

Safety is paramount, and PTFE Lined Coils excel here as well. Their non-flammable nature, with an oxygen index below 90, means they significantly reduce fire hazards in the workplace. Moreover, their resistance to oxidation is a testament to their durability, even in environments laden with strong oxidizing agents. This dual feature of non-flammability and oxidation resistance not only enhances safety but also ensures that the coils maintain their integrity over time.

Advantages of Our PTFE Lined Coil

Enhanced Lifespan

Durability is a hallmark of PTFE Lined Coils. Thanks to their robust resistance to atmospheric aging, irradiation, and permeability, these coils boast an enhanced lifespan. This translates to fewer replacements, reduced maintenance needs, and, ultimately, lower operational costs. Industries leveraging these coils can enjoy uninterrupted processes and peace of mind, knowing their equipment is built to last.

Broad Chemical Compatibility

The broad chemical compatibility of PTFE Lined Coils cannot be overstated. They're compatible with an extensive range of chemical media, with very few exceptions. This universality ensures that they're a go-to solution for transporting various chemicals without the fear of corrosion or material breakdown. Whether it's for pharmaceuticals, food processing, or chemical manufacturing, these coils offer the reliability and versatility industries need to keep operations running smoothly.


When choosing PTFE Lined Coils for your operations, it's essential to consider their specifications to ensure they meet your needs perfectly. These coils come with a set of impressive physical and chemical properties designed to offer unparalleled performance in various applications.

Material Properties: PTFE is renowned for its high chemical inertness, allowing these coils to resist virtually all chemicals. It also has a low coefficient of friction, providing a smooth surface for efficient fluid flow.

Dimensions: Available in a range of sizes, from small-diameter tubing suitable for laboratory applications to large-diameter pipes for industrial use. Custom sizes can also be produced to meet specific requirements.

Pressure Ratings: Designed to withstand positive pressures up to 2.5MPa and negative pressures up to 70KPa at room temperature, ensuring they can handle a wide range of operational demands.

Temperature Tolerances: Exceptionally broad temperature range capability, from -100°C to 250°C, accommodating extreme conditions without compromising performance.

Chemical Resistance Profiles: Able to resist strong acids, bases, solvents, and more, making them versatile for various chemical processes.

Accessories and Fittings

To enhance the functionality and adaptability of PTFE Lined Coils, a variety of accessories and fittings are available. These additions are designed to ensure that your setup is as efficient and effective as possible.

Flanges and Connectors: These components are essential for connecting your PTFE Lined Coils to other parts of your system. Available in various materials and sizes to ensure compatibility and performance.

Support Rings: These are used to maintain the integrity of the lining, especially in situations where there might be high internal pressures or vacuum conditions.

Expansion Joints: PTFE expansion joints can accommodate thermal expansion or contraction in the piping system, preventing stress on the coils and associated fittings.

Dip Pipes and Spargers: Designed for introducing or withdrawing liquids and gases from reactors or other vessels, these are customized to fit the specific dimensions and requirements of your application.

Insulation Jackets: For temperature-sensitive operations, insulation jackets can be fitted around the coils to maintain temperature within the desired range.


PTFE Lined Coils have carved out a niche in several sectors, thanks to their robustness in handling aggressive chemicals and extreme conditions. Here are a few scenarios where they shine:

Chemical Processing: A mainstay in the chemical industry, these coils are pivotal for transporting corrosive substances like nitric acid, sulfuric acid, and hydrofluoric acid, ensuring safe and efficient process flows.

Pharmaceuticals: In the pharmaceutical sector, purity and contamination prevention are paramount. PTFE Lined Coils, with their inert nature, prevent any risk of contamination while handling raw materials and finished products.

Semiconductor Manufacturing: The production of semiconductors involves highly corrosive chemicals and stringent purity requirements. PTFE Lined Coils are indispensable for safely moving these materials through the manufacturing process.

Food and Beverage: Although not as obvious, the food and beverage industry benefits from PTFE’s non-stick properties, ensuring that process lines remain clean and contamination-free. Environmental and Water Treatment: Handling waste and treating water often involves corrosive substances that PTFE Lined Coils can handle with ease, making them a valuable asset in environmental protection efforts.

FAQ (Frequently Asked Questions)

Frequently Asked Questions.png

1.How are PTFE Lined Coils installed?

Answer: Installation should always follow the manufacturer's guidelines to ensure safety and longevity. Typically, it involves connecting the coils to your system using compatible flanges or fittings, with special attention to avoid twisting or excessive stress.

2.What maintenance do they require?

Answer: PTFE Lined Coils are low maintenance, thanks to their chemical inertness and non-stick properties. Regular inspections for any signs of wear or damage, particularly at connections and bends, can help ensure they remain in top condition.

3.Are there operational limits to be aware of?

Answer: While PTFE Lined Coils are highly versatile, they do have limits, particularly concerning extreme temperatures and pressures beyond their specified range. Adhering to the provided specifications ensures safe and effective operation.

4.How do I ensure compatibility with my current system?

Answer: Compatibility involves both physical dimensions (like diameter and length) and chemical compatibility. Consulting with the manufacturer or a specialist can help determine the best match for your specific needs, ensuring that the coils integrate seamlessly with your existing setup.

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