TOBO INDUSTRIAL (SHANGHAI) CO., LTD
| Supply Ability | 10Ton/Month |
| Product Name | ASME SB111 C71500 CuNi 70/30 Seamless Tube Heat Exchanger Tubing Anti-Corrosion Pipe |
| Wallthickness | 0.5mm to 5mm (standard sizes) |
| Sizes | 1/8 |
| Ndt | EDDY CURRENT |
| Packing | Plywood case |
| Delivery Time | 15-30 Workdays |
| Max Length | 25000MM |
| Finish | Solution Annealed, O61 |
| Payment Terms | T/T, Western Union |
| Types | WN SO BL |
| Corrosionresistance | High resistance to seawater corrosion |
| Grade | Copper |
| Steel Grade | 400 Series |
| Shape | Equal Tee |
| Wall Thickness | 0.3-20mm |
| Surfacefinish | Smooth, pickled, or coated |
| Temper | Soft, Half Hard, Hard |
| Operatingtemperaturerange | -196°C to 300°C |
| Packaging Details | Standard Shipping Package |
| Model Number | Copper Nickel Tube |
| Brand Name | TOBO |
| Certification | ISO/TUV/SGS |
| Place of Origin | Shanghai,China |
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Product Specification
| Supply Ability | 10Ton/Month | Product Name | ASME SB111 C71500 CuNi 70/30 Seamless Tube Heat Exchanger Tubing Anti-Corrosion Pipe |
| Wallthickness | 0.5mm to 5mm (standard sizes) | Sizes | 1/8 |
| Ndt | EDDY CURRENT | Packing | Plywood case |
| Delivery Time | 15-30 Workdays | Max Length | 25000MM |
| Finish | Solution Annealed, O61 | Payment Terms | T/T, Western Union |
| Types | WN SO BL | Corrosionresistance | High resistance to seawater corrosion |
| Grade | Copper | Steel Grade | 400 Series |
| Shape | Equal Tee | Wall Thickness | 0.3-20mm |
| Surfacefinish | Smooth, pickled, or coated | Temper | Soft, Half Hard, Hard |
| Operatingtemperaturerange | -196°C to 300°C | Packaging Details | Standard Shipping Package |
| Model Number | Copper Nickel Tube | Brand Name | TOBO |
| Certification | ISO/TUV/SGS | Place of Origin | Shanghai,China |
| High Light | ASME SB111 C71500 CuNi 70/30 seamless tube ，copper nickel heat exchanger tubing ，anti-corrosion CuNi 70/30 pipe | ||
ASME SB111 C71500 CuNi 70/30 Seamless Tube Heat Exchanger Tubing Anti-Corrosion Pipe
1.Product Description
Copper-nickel alloy tubes are engineering-grade tubing based on copper with nickel as the primary alloying element (content 5%~30%). The most widely used grades are C70600 (90-10, ~10% Ni) and C71500 (70-30, ~30% Ni), with small but critical additions of iron and manganese for micro-alloying strengthening. Manufactured via extrusion combined with cold-drawing or cold-rolling processes, these tubes offer high dimensional precision and smooth internal/external surfaces. The microstructure is a stable single-phase face-centered cubic solid solution, free from phase embrittlement over a broad temperature range. Available in seamless (ASTM B466) and longitudinally welded (ASTM B467) forms, both are suitable for pressurized fluid service.
2.Product Applications
Marine & Offshore Engineering: Central coolers, plate heat exchanger bundles, ballast water treatment systems, and stern tube cooling lines on ships.
Power & Energy: Steam turbine condensers, auxiliary coolers, and fin-tube base pipes in thermal and nuclear power plants.
Desalination & Chemical Processing: Heating section tube bundles in MSF plants, evaporator tubes in MED units, and brine-resistant piping in salt and alkali industries.
Oil & Gas Offshore: Platform firewater ring mains, riser anti-corrosion sheathing, and subsea pipeline anode connection tubes.
General Industrial Fluids: Pipelines for high-purity water, organic solvents, and mild acidic media, as well as pneumatic brake tubing for vehicles.
3.Product Advantages
Superior erosion-corrosion resistance: At seawater flow velocities up to 3–5 m/s, the surface protective film remains stable, with impingement resistance far exceeding that of ordinary brass and stainless steel.
Natural biofouling resistance & low maintenance: Continuous controlled release of copper ions effectively inhibits algae and barnacle attachment, drastically reducing system downtime for cleaning.
Well-balanced mechanical properties: Tensile strength ranges from 275 to 345 MPa, with elongation ≥25%, offering excellent strength-toughness matching, and hardness levels can be adjusted via cold working.
Reliable joining & forming: Compatible with oxy-acetylene welding, TIG welding, brazing, and soldering. Minimum bending radius can reach 1.5D without cracking, and tube ends support flaring and beading.
Outstanding life-cycle economy: In seawater systems with a 25-year design life, corrosion allowance is significantly lower than carbon steel, and the material is 100% recyclable.
4.Key Product Specifications
| Category | Parameter | C70600 (90-10) | C71500 (70-30) |
| Chemical Composition | Nickel (Ni) content | 9.0 ~ 11.0% | 29.0 ~ 33.0% |
| Iron (Fe) content | 1.0 ~ 1.8% | 0.4 ~ 1.0% | |
| Manganese (Mn) content | ≤1.0% | ≤1.0% | |
| Lead (Pb) content | ≤0.05% | ≤0.05% | |
| Mechanical Properties | Tensile Strength Rm (annealed) | ≥275 MPa | ≥345 MPa |
| Yield Strength Rp0.2 (annealed) | ≥105 MPa | ≥140 MPa | |
| Elongation (annealed, gauge 50mm) | ≥25% | ≥30% | |
| Vickers Hardness HV (annealed) | ≈130 | ≈150 | |
| Physical Properties | Density (20℃) | 8.90 g/cm³ | 8.94 g/cm³ |
| Thermal Conductivity (20℃) | ~50 W/(m·K) | ~29 W/(m·K) | |
| Melting Range | 1100~1150℃ | ~1171℃ | |
| Electrical Resistivity (20℃) | 19 µΩ·cm | 37.4 µΩ·cm | |
| Mean Coef. of Thermal Expansion (20~300℃) | 17.0×10⁻⁶ /K | 16.2×10⁻⁶ /K | |
| Dimensions & Tolerances | Outside Diameter (OD) Range | Φ6mm ~ Φ325mm | Same |
| Wall Thickness (WT) Range | 1.0mm ~ 30.0mm | Same | |
| Single Piece Fixed Length | Up to 16,000mm | Same | |
| OD Tolerance (Precision Cold-Drawn) | ±0.05mm ~ ±0.15mm | Same | |
| Engineering Design References | Recommended Max Seawater Velocity | 3.0 ~ 4.5 m/s | 3.5 ~ 5.0 m/s |
| Average Grain Size (ASTM E112) | 0.035 ~ 0.050 mm | 0.030 ~ 0.045 mm | |
| Applicable Standards | Seamless / Welded Pipe Specs | ASTM B466 / ASTM B467 | Same |
| Heat Exchanger Tube Specs | ASTM B111 / ASME SB-111 | Same | |
| German / Chinese Standards | DIN 86019 / GB/T 8890 (B10, B30) | Same |
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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