PTFE Heat Exchanger
Model:PTFE Heat Exchanger
Kaxite PTFE heat exchanger is a 100% virgin PTFE immersion coil made from dispersion-grade extruded tube and suspension-grade PTFE support sticks. It replaces graphite, titanium and stainless steel coils in aggressive acid pickling, chrome plating, anodizing and chemical process baths where metal coils corrode or contaminate the bath. Tensile strength 15 MPa, elongation 160%, heat exchange rate ≥ 90%, temperature limit 250 °C, compressive strength 0.4 MPa. Fully anti-corrosive across the pH range, non-stick, self-lubricating, easy to clean and install. Standard and custom coil shapes available. Factory-direct price, PDF datasheet, quote within 24 hours.
Ref. KXT-PHE / PTFE Heat Exchanger Technical Data Sheet · Rev. 2.4
PTFE Heat Exchanger for Acid & Plating Baths — 100% Virgin PTFE Immersion Coil, 250 °C, Fully Anti-Corrosive
Kaxite PTFE heat exchanger is a fully fluoropolymer immersion coil built from dispersion-grade PTFE extruded tubing and suspension-grade PTFE support sticks. Both parts are 100% virgin PTFE, so the entire heat exchange surface — inside and outside — is chemically inert against strong acids, alkalis and plating solutions. It replaces graphite, titanium and stainless steel coils in the most aggressive baths, where metal coils corrode, foul or contaminate the process. Temperature limit 250 °C, minimum 90% heat exchange rate, tensile strength 15 MPa, compressive strength 0.4 MPa. Standard and custom coil configurations, factory-direct price, quote within 24 hours.
Specification Summary · KXT-PHE
PTFE · Virgin Grade
Product Name
PTFE Heat Exchanger (Immersion Coil)
Material System
100% virgin PTFE — extruded tube (dispersion grade) + support stick (suspension grade)
Tensile Strength (min)
15 MPa
Ultimate Elongation (min)
160 %
Heat Exchange Rate
≥ 90 %
Temperature Limit
250 °C
Compressive Strength
0.4 MPa
Chemical Resistance
Strong acids, strong alkalis, plating baths, chrome plating, oxidizers — full pH range within temperature limit
Coil Configuration
Standard and custom coil shapes — horizontal, vertical, U-bend, spiral, rack type
Connection
PTFE tube ends, flanged ends, threaded ends, or made to your bath drawing
Customization
Coil size, tube diameter, wall thickness, number of turns, connection type, OEM packaging
Quotation Basis
Bath drawing or dimensions, working medium, heating/cooling fluid, temperature and flow rate, quantity, destination port
01
Why PTFE Instead of Metal Coils
Metal immersion coils — stainless steel, titanium, graphite, lead — all degrade in aggressive plating and pickling baths. Stainless steel corrodes in hydrochloric acid. Titanium becomes brittle in fluoride and chromic acid. Graphite is brittle and cannot be bent into complex coils. Lead contaminates the bath. PTFE has none of these failure modes: it is chemically inert, will not contaminate the process, will not break on thermal shock, and can be formed into any coil shape without losing its corrosion resistance. That is why PTFE immersion coils are the standard choice for chrome plating, pickling, anodizing, PCB etching and similar high-aggression baths.
Advantages Over Metal Coils
- Full corrosion resistance across the entire pH range — no pitting, no stress corrosion cracking
- No metallic ion release into the process bath — protects plating quality
- Non-stick surface reduces scale and crystal build-up on the coil
- Self-lubricating and low friction — no fouling from sludge or precipitate
- No aging, no embrittlement, no galvanic reaction with the bath vessel
Maintenance Advantages
- Easy to clean — simple rinsing or brushing restores full heat transfer
- Easy to install and remove from the bath by one operator
- Stable at 250 °C continuous — withstands hot plating and pickling solutions
- Long service life compared with metal coils that need periodic replacement
- Light weight compared with graphite — lower handling risk, less breakage
02
Technical Properties — Test Data
The table below is the standard test data for the PTFE heat exchange tube and stick used in KXT-PHE. Values are minimums unless stated otherwise.
| Property | Unit | Result |
|---|---|---|
| Tensile strength (min) | MPa | 15 |
| Ultimate elongation (min) | % | 160 |
| Heat exchange rate (min) | % | 90 |
| Temperature limit | °C | 250 |
| Compressive strength | MPa | 0.4 |
03
Where PTFE Heat Exchangers Are Used
Four typical service categories. If your bath medium is not listed, send the chemical composition and Kaxite will confirm PTFE compatibility within 24 hours.
App. 01
Acid Pickling Baths
Hydrochloric, sulfuric, nitric and mixed-acid pickling lines for steel and stainless steel processing.
App. 02
Plating & Chrome Baths
Hard chrome, nickel, zinc, copper and tin plating baths where bath purity is critical.
App. 03
Anodizing & Etching
Sulfuric acid anodizing, chromic acid anodizing, PCB etching and aluminium surface treatment.
App. 04
Chemical Process Baths
General chemical heating and cooling where metal coil contamination or corrosion is unacceptable.
For the raw PTFE tube used in these coils, see PTFE Tube. For the support sticks and structural parts, see PTFE Rods. For other custom machined PTFE components, browse PTFE Parts. For the full fluoropolymer catalogue, see PTFE Products. If you need the flange gaskets that go with the exchanger connections, look at PTFE Gaskets.
04
How to Order — What to Send Us
Send the details below and Kaxite will confirm the coil geometry, tube diameter, wall thickness and connection type, then reply within 24 hours with a factory-direct quotation and lead time.
Bath & Process Data
- Bath dimensions and usable depth
- Bath medium — chemical composition and concentration
- Bath operating temperature and required temperature range
- Heating or cooling fluid inside the coil (steam, hot water, chilled water, oil)
- Required heat load or heat-up time
Coil Specification
- Coil shape — horizontal, vertical, U-bend, spiral or rack type
- Tube outer diameter and wall thickness
- Number of turns and overall coil footprint
- Connection type — plain tube ends, flanged, threaded
- Quantity and destination port
05
Frequently Asked Questions
What is a PTFE heat exchanger used for?
A PTFE heat exchanger (also called a PTFE immersion coil) is used to heat or cool aggressive chemical baths — acid pickling, chrome plating, anodizing, PCB etching and similar — where metal coils would corrode, contaminate the bath or fail. The PTFE surface is chemically inert, so the coil handles the full pH range within its temperature limit.
Why choose PTFE over stainless steel or titanium coils?
Stainless steel corrodes in hydrochloric and mixed acids; titanium becomes brittle in fluoride and chromic acid; graphite is brittle and hard to form into complex coils; lead contaminates the bath. PTFE is chemically inert, will not release metal ions, will not embrittle, and can be formed into any coil shape without losing corrosion resistance.
What is the maximum temperature the PTFE heat exchanger can handle?
The temperature limit for the PTFE tube and stick used in KXT-PHE is 250 °C. Within this limit, the coil maintains full chemical resistance and mechanical stability across the full pH range.
What is the heat exchange rate of this product?
The minimum heat exchange rate is 90 %. Actual performance depends on coil geometry, tube wall thickness, flow rate and temperature differential. Send the bath data and Kaxite will confirm the required coil surface area for your heat load.
Can you make custom coil shapes and sizes?
Yes. Kaxite manufactures to your drawing or bath dimensions. Standard shapes include horizontal, vertical, U-bend, spiral and rack-type coils. Tube diameter, wall thickness, number of turns and connection type are all customizable. OEM packaging and private labelling are available.
Do you provide material certificates and quality documentation?
Yes. Each shipment includes a material data sheet covering the PTFE grade, test values for tensile strength, elongation, heat exchange rate, temperature limit and compressive strength, plus batch traceability. Third-party inspection can be arranged on request.
How do I request a quotation?
Send your bath dimensions, chemical medium, operating temperature, heating/cooling fluid, required heat load, coil shape preference and destination port. Kaxite replies within 24 hours with a factory-direct quotation, lead time and packing details.
Need a factory price for a PTFE heat exchanger? Send your bath dimensions, medium, temperature and required heat load — Kaxite replies within 24 hours with a factory-direct quotation and coil recommendation.
Get Factory Price Now
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Contact Info
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Address
No. 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
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