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Help CenterElectropolished VCR Weld Tube Long Nipple for Ultra-Clean Applications
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As a specialized manufacturer of ultra-clean fluid handling components, Shanghai Quanbao Electronic Materials Technology leverages precision engineering to deliver the Electropolished VCR Weld Tube Long Nipple – a critical solution for contamination-sensitive industries. Engineered in Shanghai, China, our product ensures unmatched integrity in high-purity gas and liquid systems where particulate control is paramount. This component represents our commitment to advancing technology for semiconductor fabrication, pharmaceutical processing, and analytical instrumentation applications.
Core Advantages & Specifications:
- Superior Surface Integrity: Electrochemical polishing reduces surface roughness to Ra ≤ 0.38μm, minimizing particle adhesion and bacterial growth.
- Hermetic Seal Reliability: VCR (V-Conical Ring) gasket face seal design ensures leak-free performance under extreme vacuum and pressure conditions.
- Optimized Flow Path: Seamless weld tube construction eliminates internal crevices with full penetration orbital welding capability.
- Material Purity: 316L stainless steel with low carbon content prevents intergranular corrosion in aggressive media.
Technical Parameters:
| Dimension | Value | Tolerance |
|---|---|---|
| Outer Diameter | 1/4" to 1" | ±0.1mm |
| Wall Thickness | 0.035" - 0.065" | ±10% |
| Length Customization | Up to 24" | ±0.5mm |
Critical Performance Benefits:
- Reduces system downtime by 30% through elimination of particle-induced clogs
- Meets SEMI F20 and ASME BPE standards for surface finish and dimensional consistency
- Compatible with CGA, ISO-KF, and Swagelok® fittings (adapters available)
- Cleanroom packaged per IEST-146 to maintain aseptic conditions
Shanghai Quanbao's decade-long expertise in metallurgy and surface treatment ensures every Long Nipple undergoes rigorous QA protocols including helium leak testing and surface profilometry. Our Shanghai-based production facility utilizes automated polishing systems and class 100 cleanrooms to guarantee batch-to-batch consistency. Partner with us for components that exceed SEMI F20 particulate thresholds – contact our engineering team today for custom length solutions and bulk order discounts.
FAQ
Q1: What distinguishes VCR from other fitting types?
A: VCR utilizes metal gaskets with knife-edge sealing, offering superior leak tightness (-9 atm-cc/sec He) compared to compression fittings.
Q2: Can I request specific surface roughness values?
A: Yes, custom Ra values between 0.25-0.5μm are achievable upon request with extended polishing cycles.
Q3: Are these compatible with high-temperature applications?
A: The 316L construction withstands continuous operation at 400°C (752°F) with appropriate gasket selection.
Q4: Do you provide material certifications?
A: Mill test reports (MTRs) with traceable heat numbers are included with every shipment.
Q5: What packaging prevents contamination during shipping?
A: Components are triple-bagged in clean PE film with nitrogen purge and shipped in sealed ISO containers.
Q6: How are weld ends prepared for orbital welding?
A: Tubes feature square-cut ends with 0.005" maximum ovality, ready for automated welding without secondary machining.
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