T-shaped piping with fluororesin coating | Improved corrosion resistance with zero pinholes
"Uniform coating up to internal junction points and flange surfaces" completely blocks strong acids and strong alkalis! Prevents corrosion by selecting the optimal paint according to chemical and temperature conditions.
This is a technical case study on metal T-pipes (tee fittings) used in various chemical plants and semiconductor manufacturing lines, which have been coated with a fluoropolymer ETFE that excels in corrosion resistance and non-stick properties. It forms a uniform coating without pinholes at internal junctions where fluids are likely to collide and branch, as well as on the sealing surfaces of flanges. **Main Improvement Effects from Implementation** - **Prevention of Corrosion and Leaching of Pipes by Strong Chemicals** Completely blocks strong acids, strong alkalis, and organic solvents. Prevents reduction in the thickness of the metal substrate and corrosion, thereby maintaining the purity of chemical solutions by preventing the leaching of metal ions (contamination). - **Optimal Resin Selection According to Application and Environment** Based on the chemicals used, concentration, operating temperature, and wear resistance requirements, the most suitable materials are selected from various fluoropolymers such as PFA, FEP, and ETFE for coating. - **Prevention of Scale Adhesion and Pipeline Blockage** Excellent non-stick properties and smoothness suppress the adhesion of crystalline deposits (scale) and sludge to the inner walls of pipes, maintaining smooth fluid flow over the long term.
basic information
【Construction Technology】 Fluororesin Coating on Pipe Inner Surfaces (PFA / FEP / ETFE, etc.) Contract Coating 【Technical Features and Functions】 ■ High Chemical Resistance and Corrosion Resistance An inert protective film against harsh strong acids, strong alkalis, and various organic solvents. ■ Pinhole-free Uniform Coating on T-junctions Precision film formation that passes pinhole inspection even at internal junction points and sealing surfaces where thickness variation is likely. ■ High Smoothness and Non-stick Properties Reduces fluid resistance and prevents pipe blockages caused by scale and sediment adhesion. ■ Adaptability to Usage Environments Optimal resin grade selection based on temperature conditions (high temperature, thermal cycles) and liquid characteristics. 【Applicable Base Materials and Components】 ■ T-pipe fittings (tee joints), elbow pipes, cross pipes, reducing pipes, header pipes, flange fittings ■ Metal piping such as carbon steel (SGP/STPG), stainless steel (SUS304/SUS316L), etc.
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Fluororesin coating
Applications/Examples of results
Main Application Areas and Lines ■ Chemical and Material Plants Strong acid and strong alkali chemical transfer lines, organic solvent recycling piping ■ Semiconductor and LCD Manufacturing Equipment Etching solution and cleaning solution piping systems, high-purity chemical supply lines ■ Environment, Water Treatment, and Power Generation Corrosive fluid piping for wastewater treatment plants, flue gas desulfurization equipment piping
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Nikken Coating Industry Co., Ltd. has been a specialized manufacturer of functional coatings for contract processing, earning the trust of customers across various industries for 79 years since its founding. We leverage our processing technology to maximize the properties of fluororesins, such as non-stick, lubricity, and chemical resistance, providing high-performance coatings that directly address customer challenges, including "Thermo Pro Release" for thermal welding processes and "NonStick STC" for blades and precision molds. In recent years, in response to movements regarding regulations on fluorinated compounds (PFAS), "PEEK resin," which is gaining attention as a substitute for fluororesins, has become a focus. Nikken Coating Industry commercialized the world's first PEEK resin coating, "PEEKCOAT," in 1999. Based on the solid knowledge and know-how accumulated over more than 20 years, we are further intensifying our research and development efforts to explore the potential of next-generation PEEK coatings! We aim to be recognized as "the go-to for PEEK coatings" and will continue to lead the way. As "the best partner for functional coatings that builds trust through technology," Nikken Coating Industry will continue to contribute to the creation of high-quality, high-performance products.