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Products Description
Product Specifications
| Standards |
ASTM B161 / ASME SB161 |
| Steel Grades |
Nickel 200(UNS N02200),Nickel 201(UNS N02201) |
| Equivalent Standards | DIN 17740 2.4066 / 2.4068;BS 3074 NA11 / NA12;EN 10204-3.1 |
| Outer Diameter (OD) | 6 mm – 630 mm |
| Wall Thickness (WT) | 0.5 mm – 50 mm |
| Length |
6/12 m, customizied |
| Surface Treatment | Annealed & Pickled |
| Production Process |
Hot Rolled / Cold Drawn / Cold Rolled |
| Condition |
Annealed |
Nickel Alloy pipe 200 201 features a nickel content of up to 99.0% and a thermal conductivity of approximately 70 W/m·K (at 20°C)-nearly five times that of 316L stainless steel (approx. 15 W/m·K). When used in caustic soda evaporators and heat exchangers, they significantly enhance heat transfer efficiency and reduce energy consumption.
Upon contact with caustic solutions, a highly adherent NiO/Ni(OH)₂ film forms on the surface of Nickel 200/201, providing resistance to alkaline corrosion. Additionally, the pipes exhibit an elongation of ≥40% in the annealed state, allowing for complex cold-forming operations such as bending, flaring, flanging, and coiling, and are compatible with various welding processes, including TIG, MIG, and plasma welding.
Customized Services
- TORICH supports precision cutting of tubes to fixed lengths with ±0.5 mm tolerances per drawings, as well as the pre-fabrication of V-, U-, and X-shaped welding bevels.
- Tubes are supplied with a pickled and passivated surface finish; additional customizable surface treatments include bright annealing, mechanical polishing, oil-free degreasing with clean packaging, sandblasting, and retention of oxide coloration.
- For heat exchangers and reactor internal coils, tubes can be bent into U-shapes, serpentine coils, or helical coils based on drawings, with a minimum bending radius of 1.5D; post-bending solution annealing can be performed for stress relief.
Chemical Composition
| Element | Nickel min | Copper max | Iron max | Manganese max | Silicon max | Carbon max | Sulfur max |
| Nickel 200 | 99.0 | 0.25 | 0.40 | 0.35 | 0.35 | 0.15 | 0.01 |
| Nickel 201 | 99.0 | 0.25 | 0.40 | 0.35 | 0.35 | 0.02 | 0.01 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (0.2% Offset, MPa) | Elongation (%) |
| Nickel 200 | 380 (min) | 105 (min) | 40 (min) |
| Nickel 201 | 370 (min) | 100 (min) | 40 (min) |
Possible Alternative Grades
- For alkaline operating conditions involving chloride ions, Monel 400 is a suitable choice; it performs better in chloride-containing salts, seawater, and reducing acids, and offers slightly higher strength than pure nickel.
- For dilute caustic transport or auxiliary piping systems-where NaOH concentration is below 20%, and temperatures are below 60°C-316L stainless steel can be selected; its cost is approximately one-quarter that of pure nickel.
- For applications requiring higher high-temperature strength, such as chemical furnace components and heat treatment equipment, Nickel Alloy 600 is an appropriate choice.
application areas
- Chlor-alkali industry: Catholyte circulation piping for ion-exchange membrane electrolyzers, caustic concentration piping for falling-film evaporators, piping for dry chlorine gas scrubbing and drying towers, and cooling sections for high-purity hydrochloric acid and hydrogen chloride synthesis furnaces.
- Potassium hydroxide (KOH) and lithium hydroxide (LiOH) production: Piping for evaporative crystallizers and molten alkali transport.
- Organochlorides/fluorides: Freon reactors; chlorine-resistant piping for chloromethane and ethylene oxide/ethylene glycol processes.
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Polishing equipment
Cold drawing equipment
Products Package
FAQ
Q: How do you choose between Nickel 200 and Nickel 201 tubing?
A: The primary difference lies in carbon content: Ni 200 has ≤0.15%, while Ni 201 has ≤0.02%. For long-term service temperatures below 315°C, Ni 200 is suitable and more cost-effective; for temperatures above 315°C, the low-carbon Ni 201 must be selected to prevent embrittlement and failure caused by carbide graphitization.
Q: Why are Nickel 200/201 pure nickel tubes particularly well-suited for the chlor-alkali industry?
A: The core medium in the chlor-alkali industry is high-temperature, high-concentration sodium hydroxide (caustic soda). Nickel maintains an extremely low corrosion rate across the entire concentration range (0–70% NaOH) at temperatures up to the boiling point and is immune to stress corrosion cracking.
Q: Can you supply seamless capillary tubing with an outer diameter of less than 6 mm?
A: Yes. We offer precision cold-drawn seamless capillary tubing with an outer diameter as small as 1.6 mm, suitable for applications such as instrument impulse lines or sampling systems; coil supply is also available.
'Aggressive Price, Fast Service' for Customized Pure Nickel 200 Ni 200 Nickel Pipe. Through our unremitting efforts, we have built solid strategic partners and stable customers, with strong technical development and production management capabilities. We cultivate, create and refine a group of management and professional talents who meet the needs of enterprise reform and development and have a high sense of responsibility, enterprise spirit and sense of commitment, so as to ensure the continuity, stability and sustainable development of talents.
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