TOBO INDUSTRIAL (SHANGHAI) CO., LTD
| Supply Ability | 10Ton/Month |
| Product Name | CuNi 70/30 Cupronickel Welded Pipe C71500 Marine Grade Piping for Shipbuilding Industry |
| Productname | Copper Nickel Tube |
| Standard | DIN 86019 |
| Delivery | 20 working days |
| Head Code | Hexagon |
| Payment Terms | T/T, Western Union |
| Price Term | CIF CFR FOB Ex-Work |
| Alloy Or Not | Non-Alloy |
| Processing | Extrution, Drawn |
| Hardness | ≤90HRB |
| Weldability | Good |
| Delivery Time | 15-30 Workdays |
| Astm | C70600, C71500 ASTM B111 ASTM B466, B359 |
| Astm Spec | B111, B395 |
| Ndt | EDDY CURRENT |
| Materials | COPPER NICKEL |
| Connection | butt welded |
| Corrosionresistance | High resistance to seawater and industrial corrosion |
| 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 | CuNi 70/30 Cupronickel Welded Pipe C71500 Marine Grade Piping for Shipbuilding Industry |
| Productname | Copper Nickel Tube | Standard | DIN 86019 |
| Delivery | 20 working days | Head Code | Hexagon |
| Payment Terms | T/T, Western Union | Price Term | CIF CFR FOB Ex-Work |
| Alloy Or Not | Non-Alloy | Processing | Extrution, Drawn |
| Hardness | ≤90HRB | Weldability | Good |
| Delivery Time | 15-30 Workdays | Astm | C70600, C71500 ASTM B111 ASTM B466, B359 |
| Astm Spec | B111, B395 | Ndt | EDDY CURRENT |
| Materials | COPPER NICKEL | Connection | butt welded |
| Corrosionresistance | High resistance to seawater and industrial corrosion | Packaging Details | Standard Shipping Package |
| Model Number | Copper Nickel Tube | Brand Name | TOBO |
| Certification | ISO/TUV/SGS | Place of Origin | Shanghai,China |
| High Light | CuNi 70/30 cupronickel welded pipe ，C71500 marine grade piping ，copper nickel tube for shipbuilding | ||
CuNi 70/30 Cupronickel Welded Pipe C71500 Marine Grade Piping for Shipbuilding Industry
1.Product Description
Copper-nickel alloy tubes with 10% Ni (90-10/C70600) or 30% Ni (70-30/C71500).
Micro-additions of Fe and Mn enhance corrosion resistance; single-phase FCC structure, no phase embrittlement.
Supply forms: seamless (ASTM B466) or welded (ASTM B467).
Silver-white metallic finish, clean oxide-free bore, precision cold-drawn dimensional tolerance.
2.Product Applications
Marine & offshore: seawater cooling, firewater, ballast lines.
Power plants: condensers, feedwater heaters, air-cooler bundles.
Desalination: MSF/MED heating sections and evaporator tubes.
Oil & gas: platform utility piping, riser sheathing.
General industry: hydraulic tubing, chemical corrosion-resistant piping.
3.Product Advantages
Seawater corrosion rate ≤0.025 mm/year, with self-healing protective film.
Natural anti-biofouling, extending cleaning intervals by over 60%.
Tensile strength 275~345 MPa, elongation ≥25% – excellent strength-ductility balance.
Weldable, bendable, expandable – no SCC risk.
Service life 15~25 years, 100% recyclable material.
4.Key Product Specifications
| Item | 90-10 (C70600) | 70-30 (C71500) | Remarks |
| Nickel Content | 9.0~11.0% | 29.0~33.0% | — |
| Iron Content | 1.0~1.8% | 0.4~1.0% | — |
| Tensile Strength (Annealed) | ≥275 MPa | ≥345 MPa | 70-30 for higher pressure |
| Yield Strength (Annealed) | ≥105 MPa | ≥140 MPa | — |
| Elongation (Annealed) | ≥25% | ≥30% | — |
| Hardness HV (Annealed) | ≈130 | ≈150 | — |
| Density (g/cm³) | 8.90 | 8.94 | — |
| Thermal Conductivity (W/m·K) | ≈50 | ≈29 | 90-10 better for heat transfer |
| Max Service Temperature | 250°C | 300°C | Derating required above 200°C |
| OD Supply Range | Φ6~325 mm | Φ6~325 mm | Custom sizes available |
| WT Supply Range | 1.0~30.0 mm | 1.0~30.0 mm | — |
| Single Length | Up to 16 m | Up to 16 m | Fixed length tolerance ±3mm |
| Delivery Condition | Annealed (O) / Light-drawn (H) | Annealed (O) / Light-drawn (H) | Specify upon ordering |
| Recommended Max Seawater Velocity | ≤4.5 m/s | ≤5.0 m/s | — |
| Applicable Standards | ASTM B466/B467/B111; DIN 86019; GB/T 8890 | Same | Class society certificates available |
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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