What industries are ETFE anti-corrosion coatings used for head spraying

Source：www.www276.cn Release date： 2025年08月11日

Information summary：After spraying ETFE (ethylene tetrafluoroethylene copolymer) anti-corrosion coating on the head (the closed component at the end of the container), ETFE is widely used in industries that require strict equipment anti-corrosion performance due to its excellent chemical corrosion resistance, high temperature resistance, non adhesiveness, and mechanical strength. The following are the main applicatio

After spraying ETFE (ethylene tetrafluoroethylene copolymer) anti-corrosion coating on the head (the closed component at the end of the container), ETFE is widely used in industries that require strict equipment anti-corrosion performance due to its excellent chemical corrosion resistance, high temperature resistance, non adhesiveness, and mechanical strength. The following are the main application areas:
1. Chemical and petrochemical industries
Core application scenarios: Head components for various reactors, storage tanks, and towers.
Reason for application: Strong acids (such as sulfuric acid and nitric acid), strong bases (such as sodium hydroxide), organic solvents (such as ketones and esters), and corrosive gases (such as chlorine gas and hydrogen sulfide) are often involved in chemical production. ETFE coatings can withstand the long-term erosion of these media, preventing the head from being corroded, perforated, or contaminating materials.
Typical cases: Head of acid-base neutralization reactor, head of organic solvent storage tank, head of high-pressure vessel in synthetic ammonia plant.
2. Pharmaceutical and food processing industries
Core application scenarios: heads for pharmaceutical raw material reaction tanks, food fermentation tanks, and sterile storage tanks.
Applicable reasons:
ETFE has excellent cleanliness resistance, a smooth and non stick surface, and is not prone to bacterial growth. It complies with GMP (Good Manufacturing Practice) and food hygiene standards (such as FDA certification).
Can withstand steam sterilization (high temperature of 120-150 ℃) and corrosion from acidic and alkaline cleaning agents, while avoiding contamination of drugs or food by impurities dissolved from metal heads.
Typical cases: antibiotic fermentation tank head, infusion preparation tank head, dairy sterilization tank head.
3. Metallurgy and Electroplating Industry
Core application scenarios: heads for acid pickling tanks, electrolytic tanks, and waste liquid treatment equipment.
Reason for application: Acid washing processes in metallurgical processes (such as hydrochloric acid and sulfuric acid to remove metal surface oxide layers) and electrolytes in the electroplating industry (containing chromic acid, cyanide, etc.) have strong corrosiveness. ETFE coating can protect the head from corrosion by these media and extend equipment life.
Typical cases: Steel pickling tank head, galvanized electrolytic tank head, precious metal extraction reactor head.
4. Environmental Protection and Water Treatment Industry
Core application scenarios: heads for sewage treatment tanks, desulfurization towers, and exhaust gas purification equipment.
Applicable reasons:
Industrial wastewater (containing heavy metal ions, acid and alkali, organic matter) and slurries generated during desulfurization and denitrification processes (such as sulfur-containing oxides and ammonium salts) have strong corrosiveness, and ETFE coatings can resist their erosion.
The coating has good weather resistance and can adapt to the sun and rain environment of outdoor equipment.
Typical cases: anaerobic reaction tank head of municipal sewage treatment plant, desulfurization tower head of power plant, and head of garbage leachate treatment equipment.
5. Electronics and Semiconductor Industry
Core application scenarios: Head of high-purity chemical storage tanks and etching solution transport pipelines.
Reason for application: The electronics industry has high requirements for material purity. ETFE coatings are not only corrosion-resistant (such as hydrofluoric acid, photoresist, etc.), but also do not release impurities, which can avoid metal ion pollution of electronic grade raw materials and ensure the production quality of chips and other products.
Typical cases: semiconductor wafer etching solution storage tank head, high-purity hydrogen peroxide storage tank head.
6. Energy industry (especially in the field of new energy)
Core application scenarios: Lithium battery material reaction kettle, head of hydrogen energy storage equipment.
Applicable reasons:
The electrolyte used in lithium battery production (containing fluoride and organic solvents) has strong corrosiveness, and ETFE coating can protect the head from corrosion.
In hydrogen energy equipment, ETFE has low permeability to hydrogen gas and is resistant to hydrogen embrittlement environments, making it suitable for hydrogen fuel cell related hydrogen storage container heads.

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