TOBO INDUSTRIAL (SHANGHAI) CO., LTD
| Payment Terms | T/T, Western Union |
| Section Shape | Round |
| Thickness | Customized |
| Thermalconductivity | Approximately 29 W/m·K |
| Face Type | Round |
| Productname | Copper Nickel Pipe |
| Packing | Pallet, Wooden Case |
| Technique | Cold Drawn, Hot Rolled |
| Quality Grade | The real thing |
| Delivery Time | 15-30 Workdays |
| Price Term | CIF CFR FOB Ex-Work, CIF, CFR, FOB, CNF |
| Method | Hot rolled |
| Packaging Details | Standard Shipping Package |
| Feature | Excellent resistance to dry fluorine |
| Supply Ability | 10Ton/Month |
| Product Name | CuNi 70/30 & 90/10 Copper Nickel Seamless Pipe, ASTM B466 C71500/C70600 for Marine Use |
| Standard | ASTM B111 |
| Diameter | 1/2 Inch - 24 Inch |
| Delivery | According To Quantity |
| Dia | 3mm-800mm/custom |
| Brand Name | TOBO |
| Place of Origin | Shanghai,China |
| Model Number | Copper Nickel Pipe |
| Certification | ISO/TUV/SGS |
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Product Specification
| Payment Terms | T/T, Western Union | Section Shape | Round |
| Thickness | Customized | Thermalconductivity | Approximately 29 W/m·K |
| Face Type | Round | Productname | Copper Nickel Pipe |
| Packing | Pallet, Wooden Case | Technique | Cold Drawn, Hot Rolled |
| Quality Grade | The real thing | Delivery Time | 15-30 Workdays |
| Price Term | CIF CFR FOB Ex-Work, CIF, CFR, FOB, CNF | Method | Hot rolled |
| Packaging Details | Standard Shipping Package | Feature | Excellent resistance to dry fluorine |
| Supply Ability | 10Ton/Month | Product Name | CuNi 70/30 & 90/10 Copper Nickel Seamless Pipe, ASTM B466 C71500/C70600 for Marine Use |
| Standard | ASTM B111 | Diameter | 1/2 Inch - 24 Inch |
| Delivery | According To Quantity | Dia | 3mm-800mm/custom |
| Brand Name | TOBO | Place of Origin | Shanghai,China |
| Model Number | Copper Nickel Pipe | Certification | ISO/TUV/SGS |
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
Clear grade selection: 90/10 balances economy and corrosion resistance; 70/30 serves severer conditions with higher temperature and flow velocity.
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).
SCC resistance: Excellent resistance to stress corrosion cracking in ammonia, sulfide, and seawater-wet/dry alternating environments, outperforming brass and stainless steels.
Construction-friendly: Supplied in annealed condition, requires no preheating for field bending. GTAW welding yields high-quality joints without mandatory post-weld heat treatment.
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.
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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