Copper Materials for Marine & Shipbuilding
We supply high-performance copper materials for marine and offshore applications, including copper nickel tubes, aluminum brass tubes, copper pipes, plates, rods, strips, and wires.
Copper tubes are our core marine products, widely used in seawater cooling systems, condensers, heat exchangers, and ship piping thanks to their excellent corrosion resistance, high thermal conductivity, and long service life.
Marine Applications
Seawater Cooling Systems
Common Forms: Copper Nickel Tube, Copper Pipe
Common Grades: C70600, C71500
Standards: ASTM B111, ASTM B466
Surface Finish: Mill Finish, Bright Annealed
Temper: Annealed (O)
Marine Heat Exchangers
Common Forms: Copper Nickel Tube, Aluminum Brass Tube
Common Grades: C70600, C68700, C44300
Standards: ASTM B111
Surface Finish: Mill Finish, Bright Annealed
Temper: Annealed (O)
Marine Condensers
Common Forms: Seamless Copper Tube
Common Grades: C68700, C44300, C70600
Standards: ASTM B111
Surface Finish: Bright Annealed, Pickled
Temper: Annealed (O)
Ship Piping Systems
Common Forms: Copper Nickel Tube, Copper Pipe
Common Grades: C70600, C71500, C12200
Standards: ASTM B466, ASTM B42
Surface Finish: Mill Finish, Bright Annealed
Temper: Annealed (O)
Offshore Platforms
Common Forms: Copper Nickel Tube, Copper Plate, Copper Rod
Common Grades: C71500, C70600
Standards: ASTM B111, ASTM B171
Surface Finish: Mill Finish
Temper: Annealed (O)
Marine Electrical Systems
Common Forms: Copper Strip, Copper Rod, Copper Wire
Common Grades: C11000, C10200
Standards: ASTM B152, ASTM B187
Surface Finish: Mill Finish, Polished
Temper: Soft (O), Half Hard (H55), Hard (H80)
Marine Copper Grade Comparison & Selection Guide
Grade Comparison
| Grade | Alloy Type | Corrosion Resistance | Strength | Thermal Conductivity | Typical Applications |
|---|---|---|---|---|---|
| C70600 | 90/10 Copper Nickel | ★★★★★ | ★★★★☆ | ★★★★☆ | Seawater Cooling, Piping, Heat Exchangers |
| C71500 | 70/30 Copper Nickel | ★★★★★ | ★★★★★ | ★★★★☆ | Offshore Platforms, High-Velocity Seawater |
| C68700 | Aluminum Brass | ★★★★☆ | ★★★☆☆ | ★★★★★ | Condensers, Heat Exchangers |
| C44300 | Admiralty Brass | ★★★★☆ | ★★★☆☆ | ★★★★★ | Marine Condensers |
| C12200 | DHP Copper | ★★★☆☆ | ★★★☆☆ | ★★★★★ | Fresh Water Piping |
| C11000 | ETP Copper | ★★☆☆☆ | ★★☆☆☆ | ★★★★★ | Marine Electrical Systems |
Application Matching
| Marine Application | Recommended Forms | Recommended Grades |
|---|---|---|
| Seawater Cooling Systems | Copper Nickel Tube | C70600, C71500 |
| Marine Heat Exchangers | Copper Nickel Tube, Aluminum Brass Tube | C70600, C68700 |
| Marine Condensers | Seamless Copper Tube | C68700, C44300 |
| Ship Piping Systems | Copper Pipe, Copper Nickel Tube | C70600, C12200 |
| Offshore Platforms | Copper Nickel Tube, Plate | C71500, C70600 |
| Marine Electrical Systems | Copper Strip, Rod, Wire | C11000 |
Selection Flow
Step 1 – Identify the Working Environment
Seawater
Fresh Water
Offshore
Electrical
↓
Step 2 – Determine the Main Requirement
Maximum Corrosion Resistance
High Thermal Conductivity
High Mechanical Strength
High Electrical Conductivity
↓
Step 3 – Select the Material
| Requirement | Recommended Grade |
|---|---|
| General Seawater Service | C70600 |
| High-Velocity Seawater | C71500 |
| Condensers & Heat Exchangers | C68700 |
| Cost-Effective Condenser Tubes | C44300 |
| Fresh Water Piping | C12200 |
| Electrical Conductors | C11000 |
Why Choose Each Alloy
C70600 (90/10 Copper Nickel)
Best For
Seawater Cooling Systems
Ship Piping
Marine Heat Exchangers
Advantages
Excellent seawater corrosion resistance
Good biofouling resistance
Long service life
Excellent weldability
C71500 (70/30 Copper Nickel)
Best For
Offshore Platforms
High-Velocity Seawater Systems
Heavy-Duty Marine Equipment
Advantages
Superior corrosion resistance
Higher mechanical strength
Better erosion resistance
Suitable for demanding marine environments
C68700 (Aluminum Brass)
Best For
Marine Condensers
Shell & Tube Heat Exchangers
Advantages
Excellent thermal conductivity
Good seawater corrosion resistance
Cost-effective solution
Widely used in cooling equipment
C44300 (Admiralty Brass)
Best For
Condensers
Cooling Tubes
Advantages
Reliable heat transfer
Good corrosion resistance
Economical choice for condenser applications
C12200 (DHP Copper)
Best For
Ship Plumbing
Fresh Water Systems
Advantages
Excellent formability
Easy welding
High thermal conductivity
C11000 (ETP Copper)
Best For
Marine Electrical Equipment
Busbars
Connectors
Advantages
Excellent electrical conductivity
Easy fabrication
High purity copper
Available Marine Copper Products & Specifications
We supply copper tubes, pipes, plates, rods, strips, and wires in standard and custom dimensions for marine and offshore applications.
| Product | Typical Marine Applications | Common Grades | Size Range |
|---|---|---|---|
| Copper Nickel Tube | Cooling Systems, Heat Exchangers | C70600, C71500 | OD 6–300 mm |
| Aluminum Brass Tube | Condensers | C68700, C44300 | OD 6–200 mm |
| Copper Pipe | Ship Piping | C12200, C70600 | OD 6–300 mm |
| Copper Plate | Offshore Equipment | C70600, C71500 | 0.5–100 mm |
| Copper Rod | Valves & Shafts | C11000, C70600 | Ø5–300 mm |
| Copper Strip | Electrical Connectors | C11000 | 0.05–5 mm |
| Copper Wire | Marine Electrical Systems | C11000 | Ø0.1–20 mm |
Custom Manufacturing Available
✔ Custom Dimensions
✔ Cut to Length
✔ U Bend Tubes
✔ Precision Machining
✔ CNC Processing
✔ Custom Surface Finish
✔ OEM & ODM Service
✔ Small MOQ Available
Marine Copper Standards
| Category | Standards | Application |
|---|---|---|
| Copper Tubes | ASTM B111 | Seamless condenser & heat exchanger tubes |
| Copper Nickel Pipes | ASTM B466 | Seawater piping systems |
| Refrigeration Tubes | ASTM B280 | HVAC & refrigeration systems |
| Copper Tubes (EU) | EN 12449 / EN 12451 | General engineering & marine use |
| Copper Tubes (JP) | JIS H3300 | Industrial copper tube applications |
Surface Finish Options for Marine Copper Products
| Surface Finish | Suitable Grades | Purpose | Typical Marine Applications |
|---|---|---|---|
| Mill Finish | C70600, C71500, C68700 | As-produced surface, no additional treatment, cost-effective | Seawater piping, structural tubing, offshore systems |
| Bright Annealed (BA) | C70600, C68700, C44300 | Improved surface cleanliness and corrosion resistance, better heat transfer | Heat exchangers, condensers, cooling tubes |
| Pickled | C70600, C71500 | Removes oxide layer, improves surface purity and corrosion resistance | Seawater cooling systems, marine piping systems |
| Polished | C11000, C12200 | Smooth surface, reduced friction, improved conductivity appearance | Marine electrical systems, connectors, precision components |
| Cleaned & Degreased | C11000, C12200, C70600 | Free from oil/contamination for high reliability systems | Precision marine assemblies, electrical parts |
| Protective Coating (Optional) | C70600, C71500 | Anti-corrosion layer for harsh seawater and offshore exposure | Offshore platforms, high-salinity environments |
Application Recommendation
| Marine Application | Recommended Surface Finish |
|---|---|
| Seawater Cooling Systems | Mill Finish / Pickled |
| Heat Exchangers | Bright Annealed |
| Marine Condensers | Bright Annealed / Pickled |
| Ship Piping Systems | Mill Finish |
| Offshore Platforms | Protective Coating |
| Marine Electrical Systems | Polished / Cleaned |
Heat Treatment Options for Marine Copper
| Temper / Condition | Description | Typical Applications |
|---|---|---|
| Annealed (O) | Soft condition, excellent ductility and formability | Copper tubes for seawater cooling & heat exchangers |
| Half Hard (H55) | Medium strength with good formability | Marine piping systems, structural components |
| Hard (H80) | High strength condition | Offshore structural parts, mechanical applications |
| Stress Relieved | Reduced internal stress after processing | Precision marine components, bending applications |
| Custom Temper | Tailored mechanical properties upon request | Special marine engineering projects |
Application Recommendation
| Marine Application | Recommended Heat Treatment |
|---|---|
| Seawater Cooling Systems | Annealed (O) |
| Marine Heat Exchangers | Annealed (O) |
| Condensers | Annealed (O) |
| Ship Piping Systems | Annealed (O) / Half Hard |
| Offshore Platforms | Half Hard / Hard |
| Marine Electrical Systems | Soft / Half Hard |
Inspection & Testing for Marine Copper Products
Chemical Composition Analysis
| Category | Test Items | Purpose |
|---|---|---|
| Chemical & Mechanical Testing | PMI Spectrometer, Tensile Test, Hardness Test, Metallographic Analysis | Verify alloy grade (C70600, C71500, etc.) and ensure required mechanical properties |
| Non-Destructive Testing (NDT) | Eddy Current Test, Ultrasonic Test, Visual Inspection, Dimensional Inspection | Detect surface/internal defects and ensure dimensional accuracy |
| Performance Testing (Tubes) | Hydrostatic Test, Flattening Test, Flaring Test, Leakage Test | Ensure pressure resistance, ductility, and sealing performance for marine applications |
| Quality Compliance | ASTM / EN / JIS standards, ISO system control, customer-specific testing | Ensure full compliance with international marine engineering requirements |
All marine copper products are tested to ensure compliance with ASTM, EN, JIS and offshore engineering requirements before shipment.
Packaging for Marine Copper Products
| Packaging Type | Description | Typical Products | Protection Purpose |
|---|---|---|---|
| Wooden Case | Strong export-grade fumigated wooden boxes | Copper tubes, rods, plates | Prevent mechanical damage during long-distance sea transportation |
| Steel Frame Packing | Reinforced steel structure packaging | Heavy copper plates, large tubes | Ensure stability and prevent deformation |
| Plastic Caps Protection | Both ends of tubes sealed with plastic caps | Copper Nickel Tubes, Copper Pipes | Prevent internal contamination and moisture ingress |
| Waterproof Wrapping (PE Film) | Fully wrapped with moisture-proof film | All copper products | Protect against seawater humidity and oxidation |
| Pallet Packaging | Standard export pallets for container loading | Small diameter tubes, strips, wires | Easy handling and containerized shipment |
| Customized Export Packing | Tailored packaging based on project requirements | All products | Meet special marine and offshore project requirements |
Delivery Time for Marine Copper Products
| Product Type | Standard Stock Delivery | Production Delivery | Notes |
|---|---|---|---|
| Copper Nickel Tubes | 7–10 days | 15–25 days | Fast delivery for common sizes (C70600, C71500) |
| Aluminum Brass Tubes | 10–15 days | 20–30 days | Depends on specification & quantity |
| Copper Pipes | 7–12 days | 15–25 days | Standard marine piping sizes available |
| Copper Plates | 10–15 days | 20–35 days | Thickness and size dependent |
| Copper Rods | 7–10 days | 15–25 days | Standard diameters in stock |
| Copper Strips | 10–15 days | 20–30 days | Coil production required |
| Copper Wires | 5–10 days | 10–20 days | Fastest production cycle |
Manufacturing Equipment for Marine Copper Products
| Equipment | Function | Application | Capability |
|---|---|---|---|
| Cold Drawing Machine | Tube size reduction & precision control | Copper Nickel Tubes, Copper Pipes | High dimensional accuracy for marine heat exchangers |
| Annealing Furnace | Heat treatment process | All copper tubes, rods, strips | Ensures proper mechanical properties (O, H tempers) |
| Straightening Machine | Tube straightness correction | Copper Tubes & Pipes | Ensures installation-ready straightness |
| Eddy Current Testing Machine | Non-destructive inspection | Seamless copper tubes | Detects surface & internal defects |
| Hydraulic Testing Equipment | Pressure resistance test | Marine heat exchanger tubes | Ensures seawater pressure safety |
| Cutting & Sawing Line | Fixed length processing | All copper products | Custom cut-to-length service |
| Polishing & Surface Treatment Line | Surface finishing | Tubes, rods, strips | Improves corrosion resistance & appearance |
| Packing Line | Export packaging preparation | All products | Ensures safe marine shipment |
Full production line for copper tubes, pipes, plates, rods, strips, and wires
Specialized in Copper Nickel Tube (C70600 / C71500) production
Strict process control for marine-grade applications
Support custom sizes, tolerances, and temper conditions
Integrated inspection before shipment (100% quality control flow)
Discuss Your Project with Our Engineers
FAQ
1. What copper alloys are most commonly used in marine applications?
Marine applications mainly use Copper Nickel alloys (C70600, C71500), along with Aluminum Brass (C68700) and Admiralty Brass (C44300) due to their excellent seawater corrosion resistance and thermal performance.
2. Why is Copper Nickel preferred for seawater systems?
Copper Nickel alloys offer excellent resistance to seawater corrosion, biofouling, and erosion, making them ideal for seawater cooling systems, heat exchangers, and offshore piping.
3. What product forms are available for marine copper materials?
We supply copper tubes (main product), pipes, plates, rods, strips, and wires, with tubes being the most widely used in marine engineering applications.
4. Can you supply materials with marine classification certificates?
Yes, materials can be supplied with certificates from ABS, DNV, BV, LR, CCS, and other classification societies upon request.
5. What is the typical delivery time for marine copper products?
Standard sizes are usually available in stock with fast delivery, while custom production typically requires 15–30 days depending on specification and quantity.
6. Do you provide custom sizes and specifications?
Yes, we support custom dimensions, tolerances, tempers, and surface finishes according to project requirements.
7. What standards do your copper products comply with?
Our products comply with ASTM, EN, JIS, and other international marine engineering standards, such as ASTM B111 and ASTM B466.
8. Can copper tubes be used in high-pressure marine systems?
Yes, especially seamless copper nickel tubes, which are widely used in high-pressure seawater cooling and heat exchanger systems.