CuNi 70/30 Seamless Tube C71500 ASME SB111 High Corrosion Resistance Copper Nickel Pipe for Oil & Gas Piping
CuNi 70/30 Seamless Tube C71500 ASME SB111 Oil & Gas Piping Anti-Corrosion Pipe
1.Product Description
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Copper-nickel alloy tubes, grades: C70600 (90-10, ~10% Ni) and C71500 (70-30, ~30% Ni)
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Fe and Mn additions enhance corrosion resistance; single-phase FCC structure, no embrittlement risk
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Available: Seamless (ASTM B466) / Welded (ASTM B467)
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Clean oxide-free bore, silver-white finish, precision cold-drawn tolerances
2.Product Applications
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Marine/Offshore: Seawater cooling, firewater, ballast lines
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Power/Energy: Condensers, feedwater heaters, air-cooler bundles
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Desalination: MSF/MED heating sections and evaporator tubes
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Oil & Gas: Platform utility piping, riser sheathing
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General Industry: Hydraulic tubing, chemical-resistant piping
3.Product Advantages
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Corrosion: ≤0.025mm/yr in seawater, self-healing film
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Biofouling resistance: Natural biostatic, cleaning intervals extended >60%
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Strength/Toughness: Tensile 275~345MPa, Elongation ≥25%
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Workability: Weldable, bendable, expandable — no SCC risk
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Longevity: 15~25 years design life, 100% recyclable
4.Key Product Specifications
| Parameter | 90-10 (C70600) | 70-30 (C71500) |
| Nickel Ni (%) | 9.0~11.0 | 29.0~33.0 |
| Iron Fe (%) | 1.0~1.8 | 0.4~1.0 |
| Tensile Strength (MPa) | ≥275 | ≥345 |
| Yield Strength (MPa) | ≥105 | ≥140 |
| Elongation (%) | ≥25 | ≥30 |
| Hardness HV | ≈130 | ≈150 |
| Density (g/cm³) | 8.90 | 8.94 |
| Thermal Conductivity (W/m·K) | ≈50 | ≈29 |
| Max Service Temp (°C) | 250 | 300 |
| OD Range (mm) | Φ6~325 | Φ6~325 |
| WT Range (mm) | 1.0~30.0 | 1.0~30.0 |
| Single Length (m) | ≤16 | ≤16 |
| Delivery Condition | Annealed(O) / Light-drawn(H) | Annealed(O) / Light-drawn(H) |
| Recommended Max Velocity (m/s) | ≤4.5 | ≤5.0 |
| Applicable Standards | ASTM B466/B467/B111; DIN 86019; GB/T 8890 | 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.
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