Copper Heat Exchanger Tubes Manufacturer

Vulroc Tube supplies high-quality CuNi heat exchanger tubes for marine, offshore, power generation, and industrial cooling applications.

We offer the following available materials:

Our products are used in various sectors:

Marine Engineering: seawater cooling systems, shipboard heat exchangers, offshore platform coolers, desalination plants
Power Generation: Power plant condensers, auxiliary cooling systems, turbine lube oil coolers
Industrial Processing: Chemical plant heat exchangers, HVAC condensers, refrigeration systems
Oil & Gas: Platform cooling systems, process fluid coolers, hydraulic oil coolers

We adopt a standardized and secure packaging method:

Straight Lengths: Bundled with steel straps, protected by plastic caps on both ends, wrapped in moisture-resistant paper
U-Bends: Custom plywood crates with layered separation to prevent damage during transit
Protection: Anti-corrosion oil applied as required; wooden packaging compliant with ISPM 15 for international shipping
Marking: Each tube is stamped with material grade, heat number, and dimensions for full traceability

Why Choose Copper-Nickel for Heat Exchangers?

Long Service Life: With proper design and operation, CuNi tubes can provide 20+ years of service in seawater applications.
Low Maintenance: Reduced fouling and corrosion mean fewer shutdowns for cleaning or tube replacement.
Proven Track Record: Decades of global use in naval vessels, merchant ships, and coastal power plants validate reliability.
Recyclability: Fully recyclable material supporting sustainability goals and circular economy principles.

Technical

Parameter	CuNi 90/10 (C70600)	CuNi 70/30 (C71500)
UNS Designation	C70600	C71500
Nominal Composition	Cu 88.5% / Ni 10% / Fe 1.5%	Cu 69.5% / Ni 30% / Fe 0.5%
Outer Diameter (OD)	6 mm – 50 mm (Custom sizes available)	6 mm – 50 mm (Custom sizes available)
Wall Thickness	0.5 mm – 3.0 mm	0.5 mm – 3.0 mm
Length	Up to 25,000 mm (straight lengths) / Custom U-bends	Up to 25,000 mm (straight lengths) / Custom U-bends
Temper	Annealed (Soft) / Stress-Relieved (for U-bends)	Annealed (Soft) / Stress-Relieved (for U-bends)
Standards	ASTM B111 / EN 12451 / ASME SB111	ASTM B111 / EN 12451 / ASME SB111

Certifications & Quality Assurance:

Quality Management: ISO 9001:2015
Product Standards: ASTM B111 / ASME SB111 / EN 12451 / JIS H3300
Third-Party Inspection: Available upon request (ABS, DNV, BV, LR, TÜV)
Testing: Eddy current testing (ET), hydrostatic testing, tensile testing, hardness testing