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CuNi 70/30 & 90/10 Copper Nickel Seamless Pipe, ASTM B466 C71500/C70600 for Marine Use
| 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 | CuNi 70/30 & 90/10 Copper Nickel Seamless Pipe, ASTM B466 C71500/C70600 For Marine Use | Section Shape | Round |
|---|---|---|---|
| Feature | Excellent Resistance To Dry Fluorine | Productname | Copper Nickel Pipe |
| Thickness | Customized | Price Term | CIF CFR FOB Ex-Work, CIF, CFR, FOB, CNF |
| Technique | Cold Drawn, Hot Rolled | Thermalconductivity | Approximately 29 W/m·K |
| Dia | 3mm-800mm/custom | Face Type | Round |
| Standard | ASTM B111 | Diameter | 1/2 Inch - 24 Inch |
| Delivery | According To Quantity | Quality Grade | The Real Thing |
| Method | Hot Rolled | Packing | Pallet, Wooden Case |
Product Description
CuNi 70/30 & 90/10 Copper Nickel Seamless Pipe, ASTM B466 C71500/C70600 for Marine Use
1.Product Description
Copper nickel pipe is a proven corrosion-resistant alloy tube widely recognized in marine engineering and industrial heat exchange applications. Based on the Cu-Ni binary system, iron and manganese are added to optimize erosion resistance and mechanical strength. We supply two main grades — 90/10 (C70600) and 70/30 (C71500) — available in both seamless (ASTM B466/ASME SB466) and welded (ASTM B467/ASME SB467) product lines. Each pipe is subjected to non-destructive eddy-current testing, hydrostatic/pneumatic pressure tests, and intergranular corrosion examinations to ensure proven reliability.
2.Product Applications
| Grade | Typical Applications |
|---|---|
| 90/10 (C70600) | Marine seawater cooling systems, ballast lines, fire mains, desalination plant tube bundles, general chemical heat exchangers |
| 70/30 (C71500) | High-temperature seawater heat exchangers, nuclear power condensers, high-velocity/high-scouring piping, oil & gas process tracer lines |
3 . Product Advantages
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Clear grade selection: 90/10 balances economy and corrosion resistance; 70/30 serves severer conditions with higher temperature and flow velocity.
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High critical erosion velocity: 70/30 withstands up to 4.5 m/s; 90/10 up to 3.5 m/s – both far exceeding ordinary copper pipe (1.5 m/s).
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SCC resistance: Excellent resistance to stress corrosion cracking in ammonia, sulfide, and seawater-wet/dry alternating environments, outperforming brass and stainless steels.
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Construction-friendly: Supplied in annealed condition, requires no preheating for field bending. GTAW welding yields high-quality joints without mandatory post-weld heat treatment.
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Full traceability: Each pipe is marked with heat number, lot, and dimensions, traceable to raw material chemistry and heat treatment records.
4.Key Product Specification
| Parameter | 90/10 CuNi (C70600) | 70/30 CuNi (C71500) | General Supply Range (Both Grades) |
| Typical 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 | — |
| Brinell Hardness HB | ~ 90 | ~ 105 | — |
| Density (kg/dm³) | 8.90 | 8.95 | — |
| Specific Heat (J/(kg·K)) | 377 | 377 | — |
| Thermal Conductivity (W/(m·K)) | ~ 50 | ~ 29 | — |
| Electrical Resistivity (μΩ·cm) | ~ 19 | ~ 34 | — |
| Modulus of Elasticity (GPa) | 135 | 152 | — |
| Coeff. of Linear Expansion (10⁻⁶/K, 20-300°C) | 17.0 | 16.2 | — |
| Critical Erosion Velocity (m/s, seawater) | ~ 3.5 | ~ 4.5 | — |
| Max. Operating Temperature (°C) | 200 | 300 | — |
| Outer Diameter OD (mm) | — | — | Seamless 6.0~273; Welded ≤356 (larger on request) |
| Wall Thickness WT (mm) | — | — | 0.8~20, available in ASME/EN thickness schedules |
| Single Length (m) | — | — | 3~18, custom cut-to-length available |
| Surface Condition | — | — | Pickled & passivated / Bright annealed / Polished (optional) |
| Inspection Standards | — | — | ASTM E243 (eddy current), ASTM E8 (tensile), ASTM E18 (hardness), intergranular corrosion test |
| Reference Specifications | — | — | ASTM B466/B467, ASME SB466/SB467, ASTM B111, BS EN 12449, DNV, NACE MR0175 |
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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