GNEE can provide the form
Products Description
C71500 copper nickel tubes, composed of 70% copper and 30% nickel, offer the highest corrosion and impingement resistance of any copper-based alloy. Designed for severe marine and industrial environments, this alloy delivers unmatched durability and long-term performance even under the most aggressive conditions.
Known for their resistance to acidic waters, high-velocity seawater, and stress corrosion, CuNi 70/30 tubes are the preferred material in systems where reliability, longevity, and minimal maintenance are essential.
Applications
Heat exchangers, condensers, and cooling systems in demanding marine or industrial settings
Desalination plants and high-salinity water treatment systems
Marine piping systems for shipboard cooling, bilge, and ballast water
Chemical processing lines exposed to corrosive fluids and high pressure
Offshore oil & gas platforms operating in harsh coastal conditions
Thermal systems with high turbulence or flow-induced stress
Key benefits
Maximum corrosion and erosion resistance: withstands aggressive waters, acids, and high-velocity flow better than any other copper alloy.
Exceptional durability under extreme conditions: ideal for high-pressure, high-temperature, and chemically aggressive environments.
Outstanding impingement resistance: prevents wall thinning and wear in turbulent, fast-flowing systems.
Biofouling and scaling resistance: reduces maintenance in long-term seawater exposure.
Efficient thermal conductivity: ensures optimal performance in demanding heat transfer systems.
Industry standard compliance: manufactured to meet ASTM B111 and other global engineering specifications.
Technical specifications
Properties and metrics
Products provided by GNEE
| Product Category | Standard & Material | Available Forms | Thickness / Diameter Range | Width / OD Range | Length / Form | Temper / State | Surface Finish |
|---|---|---|---|---|---|---|---|
| Copper Sheet & Plate | ASTM B152, B187 Pure Copper (C11000) Phosphor Bronze, Brass |
• Coil • Sheet • Plate |
Sheet: 0.3 mm - 10.0 mm Plate: 10.0 mm - 100 mm |
100 mm - 2500 mm | Coil: Custom Sheet/Plate: 1000mm - 6000mm or Custom |
• O (Soft Annealed) • H02 (Half-Hard) • H04 (Hard) • H08 (Full-Hard) |
• Mill (Bare) • Clad • Brushed • Coated |
| Copper Rod & Bar | ASTM B133, B187 Pure Copper, Tellurium Copper Brass, Bronze |
• Round Rod • Square Bar • Hexagonal Bar • Flat Bar |
Rod Dia.: 2.0 mm - 300 mm Flat Bar Thk.: 3 mm - 50 mm |
Flat Bar Width: 10 mm - 400 mm | Straight: 1000mm - 6000mm Coil (for small dia.) |
• Annealed (Soft) • Half-Hard • Hard • As Drawn |
• Drawn (Smooth) • Turned (Peeled) • Ground (Polished) |
| Copper Wire | ASTM B1, B3 Bare Copper, Tinned Copper |
• Bare Wire • Tinned Wire • Stranded Wire • Braided Wire |
Solid Wire: 0.05 mm - 10.0 mm Stranded: Custom (e.g., 7/0.2mm) |
- | Coil, Spool, Reel Weight: Custom (e.g., 5kg, 25kg) |
• Soft (Annealed) • Hard Drawn • Medium-Hard |
• Bright Bare • Electrotinned • Oxidized-Resistant |
| Copper Tube & Pipe | ASTM B75, B88 Seamless, Welded DHP Copper (C12200) |
• Straight Tube • Coiled Tube • Capillary Tube • Square Tube |
OD: 3 mm - 300 mm Wall Thk.: 0.5 mm - 10.0 mm |
- | Straight: 1000mm - 8000mm Coil: Custom Length |
• Annealed (Soft, Bendable) • Hard Drawn (Straight) |
• Bare (Clean) • Polished • Plastic Capped |
| Copper Foil | ASTM B370 Rolled Annealed (RA) Electrodeposited (ED) |
• Roll / Coil • Strip |
Thickness: 0.01 mm - 0.50 mm (10 µm - 500 µm) |
10 mm - 1300 mm | Coil: Custom Length | • As Rolled (Hard) • Annealed (Soft, Ductile) • Laminated |
• Standard (One Side Bright) • Double Side Bright • Treated (for PCB) |
