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PFA Corrugated Tubing refers to flexible corrugated tubing made from perfluoroalkoxy polymer , featuring a spiral wave-like structure. It combines the excellent chemical inertness, high-temperature resistance of PFA material with the high flexibility and compression resistance of corrugated tubing, making it widely used in industrial fluid transmission applications requiring cleanliness, corrosion resistance, and high-temperature performance.

High Purity PFA Corrugated Hose Advantages

Extremely high corrosion resistance

Resistant to most acids, alkalis, organic solvents, and oxidizers, with performance comparable to PTFE but superior transparency and flexibility.

Outstanding high-temperature performance

Continuous operating temperature up to +260°C (500°F), capable of withstanding high-temperature steam, hot chemicals, and more.

High flexibility and small bending radius

The corrugated structure provides excellent bending performance, suitable for narrow spaces and dynamic connection applications.

High Purity and No Leaching

Suitable for systems requiring high-purity environments, such as semiconductors, pharmaceuticals, and biopharmaceuticals.

High Compressibility

The corrugated structure can partially compress and rebound, suitable for devices or sealing structures where the hose needs to follow movement.

Excellent Transparency

Compared to PTFE, PFA is more transparent, facilitating visual observation of the fluid.

Differences between PFA Corrugated Tubing and PTFE Corrugated Tubing

Product name	PFA Corrugated Tubing	PTFE Corrugated Tubing
Flexibility	More flexible, better bending performance	Slightly stiffer, larger bending radius
Transparency	More transparent	Opaque or semi-transparent
High-temperature resistance	Equivalent (+260°C)	Slightly higher (+260°C to 280°C)
Processing Performance	Easier to weld or thermoform	Higher processing difficulty
Chemical Stability	Extremely high	Extremely high

PFA Corrugated Hose Applications

Semiconductor Industry

Used for the transportation of high-purity gases and chemicals (such as HF, HCl, H₂SO₄, etc.), meeting ultra-cleanliness standards (e.g., SEMI standards)

Biopharmaceuticals and Laboratories

Sterile fluid and pharmaceutical liquid transportation, filling line flexible connections, suitable for CIP/SIP systems

Chemical Processing Industry

Transportation of highly corrosive liquids or high-temperature chemical media, such as acid-base pump outlet connection hoses

Food and Beverage Industry

Transportation of high-temperature cleaning solutions, steam, alcohol, etc., compliant with FDA standards

Automation Equipment/Robotic Arms

Used for dynamic control cable or gas pipeline protection and follow-up movement, with compressible elasticity

Customer Application Cases for Corrugated PFA Tube

Case 1

Customer Background: A leading global semiconductor manufacturing company in South Korea, transporting high-purity hydrofluoric acid (HF) and nitric acid in its chemical distribution system (CDS).

Customer Requirements:

Meet SEMI F57 and ASTM D3307 material standards

Require high flexibility, transparency, and corrosion resistance

Limited installation space, requiring a small bending radius

Solution:

3/8" high-purity PFA corrugated hose, transparent and visible, with a bending radius less than 30mm, paired with PVDF clamp-type fittings. The entire pipeline passed helium leak testing.

Customer Feedback:

Easy installation, good space adaptation, stable system operation, no contamination release. The product was subsequently included in the equipment procurement BOM standard list.

Case 2

Customer background: A European GMP-certified pharmaceutical company requires the filling head to move dynamically up and down in the injection solution filling system, necessitating flexible and clean hoses for connection.

Customer requirements:

Compliance with FDA/USP Class VI standards

Capable of repeated SIP (steam sterilization) and CIP (in-line cleaning)

The hose body must maintain repeated compression elasticity to prevent residual liquid in dead corners

Solution:

Select 1/2" corrugated PFA tubing connected to 316L quick-connect fittings, using spring protective sleeves to prevent bending damage, tested to withstand >300 steam cycles.

Customer Feedback:

Low residual levels after system cleaning, no tubing kinks during automated filling, longer service life than previous silicone tubing, subsequent upgrades across multiple filling lines.

FAQ

Q: 1.Which media are PFA corrugated pipes suitable for conveying? Which should be avoided?

A: They are suitable for conveying strong acids, strong alkalis, organic solvents, high-purity liquids, etc. It is necessary to avoid conveying molten alkali metals, fluorine gas (which will corrode PFA), and granular media with extremely high hardness (which may wear the inner wall of the corrugated pipe).

Q: 2.Are there requirements for the bending radius of PFA corrugated pipes? What are the effects of excessive bending?

A: There are strict requirements. The minimum bending radius is usually 3~5 times the outer diameter. Excessive bending will cause the inner side of the corrugation to be compressed and the outer side to be stretched. Long-term use may lead to cracks or thinning of the wall thickness, affecting tightness and pressure resistance. Sufficient bending allowance should be reserved during installation to avoid forced bending.

Q: 3.Can PFA corrugated pipes be used in the food or pharmaceutical field? What certifications are required?

A: Yes. Food/pharmaceutical grade PFA corrugated pipes should be selected, which need to meet certifications such as FDA 21 CFR 177.1550 (food contact safety) and USP Class VI (biocompatibility) to ensure no harmful substances are released, the inner wall is smooth and easy to clean, and supports CIP/SIP sterilization processes.

Q: 4.What are the advantages of PFA corrugated pipes compared with PFA straight pipes?

A: Compared with PFA straight pipes, the core advantage of corrugated pipes is better flexibility. They can absorb pipeline stress through the corrugated structure, adapting to equipment vibration, temperature changes or installation errors; while straight pipes are more suitable for straight-line transportation, with poor flexibility, and need to be combined with more pipe fittings to achieve bending, increasing the risk of leakage.

Q: 5. What is the bending radius of PFA corrugated tubing?

A: The bending radius is typically 2 to 4 times the outer diameter of the tube, with slight variations depending on the specific wall thickness and structure. For example, the minimum bending radius for a 1/2-inch tube is approximately 25 to 35 mm.

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