Instrument-Grade 70/30 CuNi Seamless Capillary Pipe Corrosion-Resistant Precision Tubing
| Product Name | Instrument-Grade 70/30 CuNi Seamless Capillary Pipe Corrosion-Resistant Precision Tubing | Material | /370/30 Copper-Nickel Alloy (Cu70/Ni30) |
|---|---|---|---|
| Standard | ASTM B122 / GB/T 1527-2011 | Process | Seamless / Cold Drawn |
| Connection Type | Compression Fitting / Welding / Flared | Face Type | Plain End / Beveled End |
| Size Range | OD: 0.1mm - 6.0mm; WT: 0.01mm - 2.0mm; Length: Custom (max 30m) | Application | Semiconductor Equipment, Precision Instruments, Medical Devices, Gas/Air Lines |
| Surface Finish | FinisPickled / Bright Annealed / Polished | Key Features | ① Instrument-Grade Precision With Tight Tolerances (±0.05mm For OD≤2mm) ② Excellent Corrosion Resistance In Harsh Environments ③ High Cleanliness & Anti-fouling Properties Ideal For Semiconductor Gas Lines |
| Highlight | Instrument-Grade CuNi capillary pipe,70/30 CuNi corrosion-resistant tubing,Seamless precision copper nickel tube |
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Instrument-Grade 70/30 CuNi Seamless Capillary Pipe Corrosion-Resistant Precision Tubing
1. Product Description
The Instrument-Grade 70/30 CuNi Seamless Capillary Pipe is a high-precision seamless tubing manufactured from copper-nickel alloy UNS C71500, consisting of approximately 70% copper and 30% nickel . Manufactured through cold-drawn seamless process without welding, this tubing offers superior strength, uniform wall thickness, and exceptional reliability for high-pressure and high-purity applications . The instrument-grade designation ensures tight dimensional tolerances and superior surface finish quality, making it the preferred choice for critical fluid handling systems in semiconductor manufacturing and precision instrumentation.
2. Key Specifications
| Parameter | Specification |
|---|---|
| Material | 70/30 Copper-Nickel Alloy (Cu70/Ni30 / UNS C71500) |
| Standard | ASTM B466 / ASME SB466 |
| Process | Seamless, Cold Drawn |
| Outer Diameter | 0.1mm - 6.0mm |
| Wall Thickness | 0.01mm - 2.0mm |
| Length | Customized (Max. 30m) |
| Surface Finish | Pickled, Bright Annealed, or Polished |
| End Type | Plain End / Beveled End |
3. Applications
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Semiconductor manufacturing equipment and gas distribution systems
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Precision instruments and sensors
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Medical devices and analytical equipment
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High-purity fluid and gas handling systems
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Heat exchangers and condensers
4. Product Advantages
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Instrument-Grade Precision: Tight dimensional tolerances ensure consistent performance in critical applications
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Superior Corrosion Resistance: Excellent resistance to corrosion, erosion, and biofouling in harsh environments
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High Strength & Reliability: Seamless construction eliminates weld seam weaknesses, providing superior pressure resistance
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High Cleanliness: Surface finish options meet semiconductor industry cleanliness requirements
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5. Product Functions
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Precision delivery of high-purity gases, chemicals, and corrosive fluids
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Efficient heat conduction for heat exchange and cooling systems
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Reliable corrosion-resistant piping solutions for semiconductor and precision equipment
6. Operating Instructions
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Pre-Installation Inspection: Verify that outer diameter, wall thickness, length, and other specifications meet design requirements
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Cutting & Deburring: Use specialized tube cutting tools to cut and remove burrs from tube ends, ensuring smooth and flat surfaces
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Connection Methods: Can be connected via compression fittings, flared fittings, or welding. Professional technicians are recommended for installation
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Pressure Testing: After installation, conduct hydrostatic or pneumatic testing according to design pressure to confirm no leakage
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Regular Maintenance: Inspect the piping system periodically and clean surface deposits as needed
7. Precautions
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Store in a dry, well-ventilated environment, avoiding direct contact with corrosive chemicals
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Prevent bending deformation or surface scratches during transportation and handling
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Use matching filler materials and process parameters when welding; refer to applicable welding specifications
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Do not use beyond the designed temperature and pressure range
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Lead (Pb) and Sulfur (S) are strictly controlled harmful impurities; this product meets stringent quality standards
8. Shipping Information
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Lead Time: 7-15 working days for standard specifications; 15-30 working days for custom sizes and special orders (subject to contract terms)
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Shipping Methods: Sea freight, air freight, and international express services available upon request
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Shipping Packaging: Packed in wooden crates or pallets to ensure product safety during transit
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Shipping Notification: Tracking number and estimated delivery date will be provided after shipment
9. Payment Terms
| Payment Method | Description |
|---|---|
| T/T (Telegraphic Transfer) | Typically 30% deposit + 70% balance paid before shipment, or upon presentation of Bill of Lading copy |
| L/C (Letter of Credit) | Sight L/C accepted, subject to international trade practices |
| Other Methods | Payment terms are negotiable upon mutual agreement |
10. Packaging
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Individual Protection: Each tube is wrapped with plastic protective film or anti-rust paper
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Bundling: Tubes are bundled by specification and quantity, with plastic end caps on both ends for port protection
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Outer Packaging: Export-standard wooden crates or sturdy wooden pallets, secured with steel straps
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Labeling: Outer packaging is marked with product specifications, material grade, quantity, gross weight, net weight, and batch number
11. After-Sales Service (Returns & Exchanges)
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Quality Assurance: Products undergo 100% inspection before shipment; material test reports and inspection certificates are provided with each delivery
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Return & Exchange Policy:
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For quality-related issues (material discrepancies, dimensional deviations, defects, etc.), returns or exchanges can be applied for within 15 days of receipt
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Returns or exchanges due to customer selection errors or improper use will be handled on a case-by-case basis
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Technical Support: After-sales technical consultation is available to assist with installation and usage inquiries
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Warranty Period: 12 months from the date of delivery; free replacement is provided for product quality issues within this period

