C-Hawk Technology has expanded our high-purity plastics portfolio with dedicated capabilities for PFA (perfluoroalkoxy) weldments—custom-formed, welded, and cleaned tubing assemblies designed for chemically aggressive and contamination-sensitive environments. We are building out this capability as a focused growth area, driven primarily by demand from semiconductor manufacturing customers, with additional applications in medical, food, and other high-purity fluid-handling markets.
PFA is valued for its excellent chemical resistance, thermal stability, and purity, making it ideal for chemical delivery, exhaust, and fluid-handling systems in semiconductor fabs. A PFA weldment typically involves three tightly controlled steps: selecting the right PFA tubing, bending it into the required shape within tight tolerances, and welding it to the appropriate end fittings. While this sounds straightforward, each step involves material, process, and cleanliness challenges that require specialized equipment and skilled operators.
One of the most demanding parts of PFA weldment manufacturing is bending tubing into complex shapes without introducing defects or stress points. Heating, forming, and processing must be tightly controlled. The process requires technique and finesse to achieve consistent, repeatable results.
After forming, tubing is welded to end fittings that allow integration into larger fluid systems. This includes flaring the tube ends, aligning them with fittings, and welding them using specialized tools and nozzles. Weld quality is critical: joints must be mechanically strong, chemically resistant, and free of internal defects.
C-Hawk uses automated tube-bending equipment combined with in-house process knowledge to produce consistent geometries across a wide range of designs. We support multiple tubing sizes, from ¼-inch up to 1-inch diameter, enabling a broad range of fluid-handling and exhaust applications. Customers can specify tight routing paths, custom geometries, and space-saving designs to fit dense tool layouts or constrained installation areas.
Our welding is performed in a Class 10,000 cleanroom, followed by cleaning in a more stringent Class 1,000 cleanroom. This two-stage approach is especially important for semiconductor applications, where even small contaminants can affect yield.
After welding, PFA assemblies undergo thorough cleaning to meet high-purity requirements. Additional finishing steps may include laser marking for identification and traceability, modification of fittings to meet unique requirements, and coiling or packaging for shipment.
C-Hawk also develops fixtures in-house to support repeatable manufacturing of complex shapes. Custom fixtures help hold tubing during bending, welding, and cooling, improving dimensional accuracy and reducing scrap as new programs ramp into production.
Customers choose C-Hawk for PFA weldments because of our combination of geographic advantage and technical capability.
Our reach is global, with our manufacturing presence in Asia serving as a key differentiator. Most of C-Hawk’s PFA weldment work supports semiconductor manufacturing, particularly in China and Southeast Asia, where fabs require large volumes of chemically resistant, high-purity tubing for process tools, chemical delivery, and exhaust systems. Being close to major semiconductor hubs allows faster response times, easier collaboration on design changes, and shorter logistics cycles compared to suppliers operating from more distant regions.
Our proven technical expertise includes:
Together, these capabilities allow us to deliver custom PFA assemblies that meet the demanding requirements of semiconductor fabs and other high-purity industries—providing reliable, contamination-controlled tubing solutions tailored to each customer’s tools and processes.
News
Hayward, California – C-Hawk Technology International (“C-Hawk”), a leading supplier of critical components, assemblies and gold plating used in Semiconductor
READ MORE
Thanksgiving time has arrived and C-Hawk has once again donated 200, 24lb frozen turkeys to Centro De Servicios, a local
READ MORE
New facility provides special processes including gold plating, ultra-high purity stainless steel orbital welding and contract manufacturing, while creating 150
READ MORE