JIS NW 2200 and JIS NW 2201 Pure Nickel Tube s are high-performance industrial materials designed for extreme corrosion resistance, stable mechanical strength, and long service life in demanding environments. At DLX, we manufacture these pure nickel tubes with strict quality control, advanced melting technology, and precision cold-drawing processes to ensure consistent chemical composition and dimensional accuracy.
NW 2200 is commercially pure nickel with excellent corrosion resistance and good mechanical properties. NW 2201 is the low-carbon version, specially designed for applications where resistance to intergranular corrosion at elevated temperatures is critical. Both grades are widely used in marine systems, power plant heat exchangers, chemical processing pipelines, and high-temperature equipment.
As a manufacturer deeply involved in nickel alloy production, we understand that reliability in marine and power plant systems is not optional — it is mandatory. That’s why our tubes are engineered for stability, weldability, and long-term durability.
For more details, pls directly contact us.
| Grade | Nickel (Ni)+ Cobalt (Co) | Copper (Cu) | Silicon (Si) | Manganese (Mn) | Carbon (C) | Magnesium (Mg) | Sulfur (S) | Phosphorus (P) | Iron (Fe) |
|
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99.9% | ≤0.015 | ≤0.03 | ≤0.002 | ≤0.01 | ≤0.01 | ≤0.001 | ≤0.001 | ≤0.04 |
|
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99.6% | 0.1 | 0.1 | 0.05 | 0.1 | 0.1 | 0.005 | 0.002 | 0.1 |
Physical & Mechanical Properties
| Grades | N4/Ni201 | N6/Ni200 |
| Density | 8.9g/cm³ | 8.9g/cm³ |
| Melting Point | 1455°C | 1445-1470℃ |
| Coefficient of Thermal Expansion | 13.0µm/m·°C | 13.3×10⁻⁶/℃ |
| Thermal Conductivity | 10.1W/m·K | 90.7 W/m·K |
| Electrical Resistivity | 0.103×10⁻⁶Ω·/m (at 20℃) | |
| Electrical Conductivity | 14.6% IACS | |
| Tensile Strength | ≥450MPa | ≥450 MPa |
| Yield Strength | ≥200MPa | ≥150 MPa |
| Elongation at Break | ≥40% | ≥40% |
| Hardness | ≤150 |
For more details, pls directly contact us.
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Marine seawater piping systems
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Power plant condenser tubes
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Heat exchangers
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Chemical processing pipelines
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Desalination equipment
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Offshore engineering structures
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Alkali production equipment
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High-temperature furnace components
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Industry Trends
The demand for pure nickel tubes is steadily increasing due to:
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Growth in offshore energy and marine engineering
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Expansion of nuclear and thermal power plants
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Rising demand for corrosion-resistant materials in desalination
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Stricter environmental and safety standards
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Replacement of lower-grade materials with longer-life alloys
Marine systems and power plants require materials that withstand chloride corrosion, high temperature, and pressure fluctuations. Pure nickel remains one of the most reliable solutions in these environments.
For more details, pls directly contact us.
About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.
Client Visits
Building Stronger Partnerships
We support all kinds of testing:
1. What is the main difference between NW 2200 and NW 2201?
The primary difference is carbon content. NW 2201 has significantly lower carbon, making it more resistant to intergranular corrosion during welding and high-temperature exposure.
2. Is JIS NW 2200 equivalent to Nickel 200 ?
Yes, NW 2200 is comparable to internationally recognized pure nickel grades with similar chemical composition and performance.
3. Why is pure nickel suitable for marine environments?
Pure nickel offers excellent resistance to seawater corrosion and alkaline solutions, making it highly reliable in marine piping systems.
4. Can these tubes be welded easily?
Yes. Both grades offer excellent weldability. NW 2201 is especially preferred when extensive welding is involved.
5. What surface finishes are available?
We provide bright annealed, pickled, and polished finishes based on project requirements.
6. What sizes are available?
Outer diameter, wall thickness, and length can be customized. We support both standard and project-specific dimensions.
7. Are these tubes suitable for high-temperature service?
Yes. Pure nickel maintains mechanical stability and oxidation resistance at elevated temperatures.
8. How long is the service life in marine systems?
With proper installation and maintenance, service life can exceed several decades due to strong corrosion resistance.
Why DLX Pure Nickel Tube Stands Out
When choosing a supplier for JIS NW 2200 / NW 2201 pure nickel tubes, the difference is not just material — it’s manufacturing capability, consistency, and technical support.
Many suppliers trade nickel tubes. At DLX, we produce them.
1. Full Production Control
From raw material melting to cold drawing and final inspection, everything is controlled in-house. This ensures traceability and stable quality.
2. Strict Chemical Composition Monitoring
We use advanced spectrometers to verify each batch meets JIS standards. Carbon control in NW 2201 is especially critical, and we maintain tight tolerance.
3. Precision Dimensional Tolerance
For marine and power plant systems, dimensional accuracy directly affects installation efficiency. Our tubes maintain tight OD and wall thickness tolerance.
4. Custom Engineering Support
We understand B2B industrial projects. Our technical team supports material selection, drawing review, and application guidance.
5. Stable Supply for Long-Term Projects
Power plants and marine projects require phased delivery. Our production planning supports large and continuous orders.
6. Competitive Cost with Manufacturer Advantage
Because we manufacture directly, we offer better cost control compared to trading companies.
Applications in Marine Systems
In marine systems, chloride corrosion is the biggest challenge. Pure nickel resists alkaline and neutral salt environments extremely well. NW 2200 tubes are commonly used in:
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Seawater cooling lines
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Ballast water systems
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Shipboard heat exchangers
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Offshore oil platform piping
The reliability of pure nickel reduces maintenance costs and system downtime.
Applications in Power Plants
In power plants, materials face high temperature, steam pressure, and chemical treatment environments. NW 2201 is often selected for:
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Condenser tubing
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Steam generator components
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Heat exchanger pipelines
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Alkali handling systems
Low carbon content ensures structural integrity after welding and prolonged thermal exposure.
Market Outlook
Global infrastructure upgrades and renewable energy expansion are driving demand for corrosion-resistant materials. Desalination plants and offshore wind projects are new growth areas for pure nickel tube applications.
As environmental regulations become stricter, longer-lasting materials reduce lifecycle cost. Instead of replacing pipelines every few years, industries are investing in durable alloys like NW 2200 and NW 2201.
At DLX, we continue to optimize production efficiency and alloy purity to meet growing global demand.
Conclusion
JIS NW 2200 / NW 2201 pure nickel tubes offer exceptional corrosion resistance, weldability, and high-temperature performance for marine and power plant systems. The low carbon version ensures superior stability in welded and thermal applications.
DLX provides not only material but also manufacturing expertise, consistent quality, and project-level support. For critical industrial systems where reliability matters, our pure nickel tubes deliver long-term performance and value.
