TOBO INDUSTRIAL (SHANGHAI) CO., LTD
| Supply Ability | 10 Ton/Month |
| Product Nanme | Bright Finish CuNi 70/30 Seamless Pipe Tight Tolerance Nickel Copper Alloy Tubing |
| Tensile Strength | High |
| Coating | Brass |
| Face Type | Round |
| Weldability | Good |
| Delivery Time | 15-30 Workdays |
| Pressure Rating | Up To 1000 Psi |
| Welding Line Type | Seamless & Welded |
| Payment Terms | T/T, Western Union |
| Yield Strength | High |
| Quality Grade | The real thing |
| Joiningmethods | Welding, brazing, flanging |
| Thermalconductivity | Approximately 29 W/m·K |
| Uns | N80904 |
| Material | 90/10 Copper Nickel Alloy C70600 |
| Price Term | CIF CFR FOB Ex-Work |
| Thickness | 0.1mm~300mm |
| Packaging Details | Standard Shipping Package |
| Method | Hot rolled |
| Model Number | Copper Nickel Pipe |
| Certification | ISO/TUV/SGS |
| Place of Origin | Shanghai,China |
| Brand Name | TOBO |
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Product Specification
| Supply Ability | 10 Ton/Month | Product Nanme | Bright Finish CuNi 70/30 Seamless Pipe Tight Tolerance Nickel Copper Alloy Tubing |
| Tensile Strength | High | Coating | Brass |
| Face Type | Round | Weldability | Good |
| Delivery Time | 15-30 Workdays | Pressure Rating | Up To 1000 Psi |
| Welding Line Type | Seamless & Welded | Payment Terms | T/T, Western Union |
| Yield Strength | High | Quality Grade | The real thing |
| Joiningmethods | Welding, brazing, flanging | Thermalconductivity | Approximately 29 W/m·K |
| Uns | N80904 | Material | 90/10 Copper Nickel Alloy C70600 |
| Price Term | CIF CFR FOB Ex-Work | Thickness | 0.1mm~300mm |
| Packaging Details | Standard Shipping Package | Method | Hot rolled |
| Model Number | Copper Nickel Pipe | Certification | ISO/TUV/SGS |
| Place of Origin | Shanghai,China | Brand Name | TOBO |
| High Light | Bright Finish CuNi 70/30 seamless pipe ，Nickel copper alloy tubing tight tolerance ，Copper nickel pipe with bright finish | ||
Bright Finish CuNi 70/30 Seamless Pipe Tight Tolerance Nickel Copper Alloy Tubing
1.Product Description
Copper-nickel pipe is a seamless or welded tubular product made from copper-nickel alloy, primarily composed of copper (Cu) and nickel (Ni), with minor additions of iron (Fe) and manganese (Mn) to enhance mechanical properties and corrosion resistance. The most common grades are 90/10 (CuNi 90/10, UNS C70600) and 70/30 (CuNi 70/30, UNS C71500). These pipes are manufactured according to international standards such as ASTM B466, B467, B111, and EN 12451, offering excellent dimensional accuracy, uniform wall thickness, and superior surface quality. They are available in a wide range of diameters and schedules to meet diverse engineering requirements.
2. Product Applications
Copper-nickel pipes are widely used in marine engineering, offshore oil and gas platforms, shipbuilding (hull piping, cooling water systems, fire protection systems), seawater desalination plants, power generation stations (condenser and heat exchanger tubes), chemical processing industries, and coastal infrastructure. They are the preferred material for conveying seawater, brine, and other corrosive fluids, as well as for high-temperature steam and hydraulic systems requiring reliable anti-fouling and biofouling resistance.
3. Product Advantages
Superior corrosion resistance – Exceptional resistance to seawater, brackish water, and chloride-induced pitting, stress corrosion cracking, and erosion-corrosion.
Excellent biofouling resistance – Naturally inhibits marine organism adhesion, reducing maintenance and cleaning frequency.
High strength and ductility – Good mechanical properties at both ambient and elevated temperatures, with easy bending, flanging, and welding.
Long service life – Proven track record of 30+ years in marine environments with minimal degradation.
Low magnetic permeability – Suitable for applications where non-magnetic materials are required.
Good thermal conductivity – Efficient heat transfer performance for heat exchanger applications.
Fabrication friendly – Compatible with standard welding, brazing, and soldering techniques; readily machinable.
4.Key Technical Parameters
| Parameter | 90/10 (C70600) | 70/30 (C71500) |
| Chemical Composition | Cu: 88.5–90.5%, Ni: 9.0–11.0%, Fe: 1.0–1.8%, Mn: ≤1.0% | Cu: 68.5–70.5%, Ni: 29.0–31.0%, Fe: 0.4–1.0%, Mn: ≤1.0% |
| Density | 8.94 g/cm³ | 8.94 g/cm³ |
| Melting Range | 1,100–1,150°C | 1,170–1,240°C |
| Tensile Strength (min) | 290 MPa | 485 MPa |
| Yield Strength (0.2% offset, min) | 105 MPa | 175 MPa |
| Elongation (min) | 30% (in 50 mm) | 30% (in 50 mm) |
| Hardness (Rockwell B) | 65–80 HRB | 75–90 HRB |
| Electrical Conductivity | ~7% IACS | ~4.5% IACS |
| Thermal Conductivity | ~45 W/(m·K) at 20°C | ~29 W/(m·K) at 20°C |
| Coefficient of Thermal Expansion | ~16.2 × 10⁻⁶ /°C (20–300°C) | ~15.8 × 10⁻⁶ /°C (20–300°C) |
| Operating Temperature Range | –200°C to +300°C | –200°C to +350°C |
| Standard Dimensions | OD: 6.0–400.0 mm; Wall thickness: 0.5–30.0 mm; Length: up to 12 m (or as required) | |
| Manufacturing Standards | ASTM B466/B467/B111, EN 12451, JIS H3300, etc. | |
| Product Forms | Seamless or welded (straight or coiled) |
FAQ
1. Are you trading company or manufacturer ? We are manufacturer ,You can see the certification.
2.How long is your delivery time? Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ? Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ? Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
TOBO INDUSTRIAL (SHANGHAI) Co., Ltd. is a professional supplier of pipeline products, located in Shanghai, with convenient transportation and beautiful environment. Dedicated to strict quality control and customer service. Our experienced staff can readily discuss your requirements to ensu... TOBO INDUSTRIAL (SHANGHAI) Co., Ltd. is a professional supplier of pipeline products, located in Shanghai, with convenient transportation and beautiful environment. Dedicated to strict quality control and customer service. Our experienced staff can readily discuss your requirements to ensu...
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