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Factory Direct CuNi 70/30 Copper Nickel Seamless Pipe, ASTM B466 C71500 for Sale
| Place of Origin | Shanghai,China |
|---|---|
| Brand Name | TOBO |
| Certification | ISO/TUV/SGS |
| Model Number | Copper Nickel Pipe |
| Minimum Order Quantity | 1PC |
| Price | Negotiable |
| Packaging Details | Standard Shipping Package |
| Delivery Time | 15-30 Workdays |
| Payment Terms | T/T, Western Union |
| Supply Ability | 10Ton/Month |
Product Details
| Product Name | Factory Direct CuNi 70/30 Copper Nickel Seamless Pipe, ASTM B466 C71500 For Sale | Technics | Casting |
|---|---|---|---|
| Temperature Range | Customizable | Warranty | 1 Year |
| Diameterrange | Typically 1/2 Inch To 24 Inches | Corrosion Resistance | High |
| Materialcomposition | Copper-Nickel Alloy (commonly 90/10 Or 70/30 Cu-Ni) | Productname | Copper Nickel Pipe |
| Price Term | CIF CFR FOB Ex-Work, CIF, CFR, FOB, CNF | Standardscompliance | ASTM B466, ASTM B111, ASTM B829 |
| Service | OEM&ODM | Grade | C70600, C71500 |
| Form | Pipe | Outside Diameter | 2mm*4mm~1016mm*1219mm |
| Packing | Pallet, Wooden Case |
Product Description
Factory Direct CuNi 70/30 Copper Nickel Seamless Pipe, ASTM B466 C71500 for Sale
1.Product Description
Copper nickel pipes are Cu-based alloy tubes specifically engineered for seawater, brine, and highly corrosive services. They offer outstanding corrosion resistance, biofouling resistance, and thermal conductivity. We supply two primary grades – 90/10 (UNS C70600) and 70/30 (UNS C71500) – in both seamless and welded forms, manufactured to ASTM/ASME standards and approved by major classification societies (DNV, ABS, LR).
2.Product Applications
| Comparison Item | 90/10 (C70600) | 70/30 (C71500) | Selection Guidance |
| Pitting Resistance in Seawater | Good | Excellent | Choose 70/30 for high salinity and high temperature |
| Max. Continuous Service Temp. | 200°C | 300°C | Choose 70/30 if temperature >200°C |
| Critical Erosion Velocity (m/s) | 3.5 | 4.5 | Choose 70/30 if flow velocity >3.5 m/s |
| Thermal Conductivity (W/(m·K)) | ~50 (higher) | ~29 (moderate) | Choose 90/10 for heat-exchange priority |
| Relative Material Cost | Lower | Higher | Choose 90/10 for cost-sensitive projects |
| Typical Applications | Ship cooling, fire mains, ballast, general heat exchangers | High-temp condensers, nuclear cooling, chemical high-temp exchangers | Balance temperature/velocity/cost |
3 . Product Advantages
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Extremely low corrosion rate: In clean seawater, 90/10 ≤0.025 mm/year, 70/30 ≤0.020 mm/year – design life exceeding 30 years.
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Natural biofouling resistance: Slow release of copper ions forms a biocidal layer, significantly reducing cleaning maintenance.
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Balanced thermal and strength: 90/10 offers better heat exchange than stainless steel; 70/30 provides higher strength for high-pressure systems.
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Fabrication-friendly: Supplied in annealed condition (O-temper); cold-bendable (minimum bend radius 2.5~3×OD); excellent TIG weldability; no post-weld heat treatment required.
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Full traceability: Each pipe is marked with heat and lot numbers, accompanied by third-party test reports.
4.Key Product Specification
| Parameter | 90/10 (C70600) | 70/30 (C71500) | General Specifications & Remarks |
| Main Composition (wt%) | Cu bal., Ni 9-11, Fe 1.0-1.8, Mn≤1.0 | Cu bal., Ni 29-33, Fe 0.4-1.0, Mn≤1.0 | — |
| Tensile Strength Rm (MPa) | ≥ 305 | ≥ 355 | — |
| Yield Strength Rp0.2 (MPa) | ≥ 105 | ≥ 125 | — |
| Elongation A (%) | ≥ 30 | ≥ 35 | — |
| Hardness (HB) | ~ 90 | ~ 105 | — |
| Density (kg/dm³) | 8.90 | 8.95 | — |
| Thermal Conductivity (W/(m·K)) | ~ 50 | ~ 29 | — |
| Coeff. of Linear Expansion (10⁻⁶/K, 20-300°C) | 17.0 | 16.2 | — |
| Modulus of Elasticity (GPa) | 135 | 152 | — |
| Critical Erosion Velocity (m/s, seawater) | 3.5 | 4.5 | Reduce for sand-laden seawater |
| Max. Continuous Service Temp. (°C) | 200 | 300 | Derate to 80% for long-term use |
| Minimum Cold Bend Radius (D = OD) | 2.5 D | 3.0 D | Fill pipe internally to prevent collapse |
| Supply OD (mm) | — | — | Seamless 6~273; Welded ≤356 (special up to 914) |
| Supply Wall Thickness (mm) | — | — | 0.8~20, per ASME/EN thickness schedules |
| Single Length (m) | — | — | 3~18, cut-to-length available |
| Surface Condition | — | — | Pickled & passivated / Bright annealed / Mechanically polished (optional) |
| NDT Methods | — | — | Eddy current (ASTM E243) + Hydrostatic/pneumatic test |
| Applicable Standards | — | — | ASTM B466/B467, ASME SB466/SB467, ASTM B111, BS EN 12449, DNVGL-CG-0187 |
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.
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