The system achieves gas purity levels reaching 99.9999 percent by utilizing seamless, electropolished 316L stainless steel tubing. Engineers constructed the internal fluid loops to minimize surface roughness, effectively preventing particle shedding and moisture buildup. To ensure the integrity of the gas path, all pipeline joints are fused using automated orbital tungsten inert gas welding, a process performed under a constant ultra-high-purity argon back purge to prevent internal oxidation.
Shanghai Chengwei Debuts Centralized High-Purity Gas Supply System
Moving gas storage out of research spaces, Shanghai Chengwei Semiconductor Equipment has launched a centralized delivery system engineered for high-precision labs. The infrastructure replaces individual cylinders with an external distribution station, aiming to reduce contamination risks while streamlining floor space in semiconductor and university research environments.
Operational continuity is maintained through automated changeover manifolds that toggle between primary and reserve cylinder banks without pressure fluctuations. A programmable logic controller, accessible via a touchscreen interface, provides technicians with real-time oversight of flow rates and delivery pressures. Safety protocols include ambient leak detection networks and pneumatically activated emergency shut-off valves, which isolate the main gas source if a downstream leak occurs. Based in Shanghai’s Songjiang District, the company manufactures these systems within a dedicated 500-square-meter Class 100 cleanroom to serve the semiconductor, solar, and advanced electronics sectors.
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