Recently, our company welcomed a delegation of important clients from China who traveled a long distance to visit. After in-depth technical exchanges and business discussions, both parties successfully signed a major order for heat exchangers made from C71500 copper-nickel alloy (70/30 cupronickel) tubes, laying a solid foundation for long-term cooperation in the future.
During the visit, accompanied by our business manager and technical experts, the client delegation toured the company's core production workshop, precision testing laboratory, and R&D center. The clients focused on inspecting the complete production line of C71500 copper-nickel alloy tubes-a key material used in marine engineering, high-end power, and chemical industries. Our advanced fully automated continuous casting and rolling process, stringent in-process quality control system, and specialized testing for the material's seawater corrosion resistance, anti-biofouling properties, and excellent mechanical performance left a deep impression on the clients.
During the subsequent seminar, our technical team provided a detailed introduction to the application advantages of C71500 material and offered customized material and process recommendations tailored to the specific requirements of the client's heat exchanger project, such as working pressure, medium composition, and heat exchange efficiency. Both sides engaged in productive discussions on technical standards, quality control checkpoints, and post-processing support, reaching a high level of consensus.
Following the successful signing of the contract, the client stated, "This on-site visit has given us a more direct and solid understanding of your company's technical capabilities and management level. We look forward to using this order as a starting point to develop a more comprehensive and long-term cooperation."
After signing the contract, our company's general manager stated, "This order is a great recognition of our products and services. We always value our cooperation with clients around the world. We will go all out to ensure the timely delivery of this batch of C71500 copper-nickel tubes, ensuring top-notch quality, and helping our client successfully complete their project."
GNEE is a leading manufacturer and global supplier specializing in high-performance non-ferrous metal products, with a core focus on copper-nickel alloys, copper plates, and related fabricated components. With advanced production facilities and a dedicated R&D center, GNEE is committed to providing tailored material solutions and reliable supply chain support for critical industries such as marine engineering, power generation, chemical processing, and HVAC&R.
Our product range
| Product Category | Main Products & Forms | Common Specifications (Examples) | Typical Applications |
|---|---|---|---|
| Copper & Copper Alloy Tubes | • Straight Tubes • Coiled Tubes • Capillary Tubes • Heat Exchanger Tubes (e.g., C71500 CuNi) • Refrigeration Tubes |
• OD: 3mm ~ 300mm • Wall Thickness: 0.5mm ~ 15mm • Standards: ASTM, EN, JIS, GB • Tempers: Soft, Half-hard, Hard |
• HVAC&R Systems • Heat Exchangers & Condensers • Plumbing & Water Supply • Industrial Piping • Automotive & Marine |
| Copper & Copper Alloy Sheets/Plates | • Rolls / Coils • Plain Sheets • Plates • Strips |
• Thickness: 0.1mm ~ 100mm • Width: Up to 1300mm • Alloys: C11000, C10200, C27200, etc. • Surface: Mill, Polished, Coated |
• Roofing & Architectural Cladding • Electrical Components • Cookware & Decor • Industrial Fabrication • Chemical Equipment |
| Copper & Copper Alloy Rods/Bars | • Round Rods/ Bars • Square / Hexagonal Bars • Flat Bars • Forging Billets |
• Diameter / Size: 3mm ~ 300mm • Length: Custom (Straight or Coiled) • Conditions: Drawn, Extruded, Hot-rolled |
• Fasteners & Machined Parts • Electrical Conductors • Valves & Fittings • Automotive Components • Artistic & Structural Uses |
| Copper & Copper Alloy Wires | • Bare Copper Wire • Stranded Wire • Tinned Copper Wire • Alloy Wire (e.g., Brass, Bronze) |
• Diameter: 0.05mm ~ 20mm • Temper: Annealed, Hard-drawn • Conductivity: Standard to High-purity |
• Electrical Cabling & Wiring • Windings & Transformers • Welding Wire • Mesh & Screens • Craft & Jewelry |
| Copper & Copper Alloy Foils | • Rolled Foils / Strips • Electrolytic Foils |
• Thickness: 0.01mm ~ 0.5mm • Width: Custom (Up to 650mm) • Surface: Standard, Treated |
• Printed Circuit Boards (PCBs) • Electromagnetic Shielding • Flexible Heat Exchangers • Decorative Laminates • Battery Components |
