C71500 CuNi 70/30 Seamless Capillary Tube Corrosion-Resistant Precision Coil

Product Specification

C71500 CuNi 70/30 Seamless Capillary Tube Corrosion-Resistant Precision Coil 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

3. Applications

• Semiconductor manufacturing equipment and gas distribution systems

• Precision instruments and sensors

• Medical devices and analytical equipment

• High-purity fluid and gas handling systems

• Heat exchangers and condensers

4. Product Advantages

• Instrument-Grade Precision: Tight dimensional tolerances ensure consistent performance in critical applications

• Superior Corrosion Resistance: Excellent resistance to corrosion, erosion, and biofouling in harsh environments

• High Strength & Reliability: Seamless construction eliminates weld seam weaknesses, providing superior pressure resistance

• High Cleanliness: Surface finish options meet semiconductor industry cleanliness requirements

5. Product Functions

• Precision delivery of high-purity gases, chemicals, and corrosive fluids

• Efficient heat conduction for heat exchange and cooling systems

• Reliable corrosion-resistant piping solutions for semiconductor and precision equipment

6. Operating Instructions

1. Pre-Installation Inspection: Verify that outer diameter, wall thickness, length, and other specifications meet design requirements

2. Cutting & Deburring: Use specialized tube cutting tools to cut and remove burrs from tube ends, ensuring smooth and flat surfaces

3. Connection Methods: Can be connected via compression fittings, flared fittings, or welding. Professional technicians are recommended for installation

4. Pressure Testing: After installation, conduct hydrostatic or pneumatic testing according to design pressure to confirm no leakage

5. Regular Maintenance: Inspect the piping system periodically and clean surface deposits as needed

7. Precautions

• Store in a dry, well-ventilated environment, avoiding direct contact with corrosive chemicals

• Prevent bending deformation or surface scratches during transportation and handling

• Use matching filler materials and process parameters when welding; refer to applicable welding specifications

• Do not use beyond the designed temperature and pressure range

• Lead (Pb) and Sulfur (S) are strictly controlled harmful impurities; this product meets stringent quality standards

8. Shipping Information

• Lead Time: 7-15 working days for standard specifications; 15-30 working days for custom sizes and special orders (subject to contract terms)

• Shipping Methods: Sea freight, air freight, and international express services available upon request

• Shipping Packaging: Packed in wooden crates or pallets to ensure product safety during transit

• Shipping Notification: Tracking number and estimated delivery date will be provided after shipment

9. Payment Terms

10. Packaging

• Individual Protection: Each tube is wrapped with plastic protective film or anti-rust paper

• Bundling: Tubes are bundled by specification and quantity, with plastic end caps on both ends for port protection

• Outer Packaging: Export-standard wooden crates or sturdy wooden pallets, secured with steel straps

• Labeling: Outer packaging is marked with product specifications, material grade, quantity, gross weight, net weight, and batch number

11. After-Sales Service (Returns & Exchanges)

• Quality Assurance: Products undergo 100% inspection before shipment; material test reports and inspection certificates are provided with each delivery

• Return & Exchange Policy:

  • For quality-related issues (material discrepancies, dimensional deviations, defects, etc.), returns or exchanges can be applied for within 15 days of receipt

  • Returns or exchanges due to customer selection errors or improper use will be handled on a case-by-case basis

• Technical Support: After-sales technical consultation is available to assist with installation and usage inquiries

• Warranty Period: 12 months from the date of delivery; free replacement is provided for product quality issues within this period