Changzhou DLX Alloy Co., Ltd.
| Featured Grade | N4 (NP1)，Ni+Co ≥99.9%；N6/Ni200/Ni201 |
| Standards | ASTM B161 / B163 / B725；GB/T 2882-2023 |
| Product Form | Seamless pure nickel pipe (cold-worked) |
| Annealed Hardness | 90-120 HB |
| Payment Terms | L/C,T/T,Western Union |
| Supply Ability | 500 tons per month |
| Delivery Time | 5-20 Days |
| Packaging Details | Spool package with Carton box, Coil package with polybag, |
| Density | 8.908 g/cm³ |
| Curie Temperature | 358°C |
| Certification | CE,ROHS |
| Brand Name | DLX |
| Model Number | Pure Nickel Pipe |
| Place of Origin | China Jiangsu |
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Product Specification
| Featured Grade | N4 (NP1)，Ni+Co ≥99.9%；N6/Ni200/Ni201 | Standards | ASTM B161 / B163 / B725；GB/T 2882-2023 |
| Product Form | Seamless pure nickel pipe (cold-worked) | Annealed Hardness | 90-120 HB |
| Payment Terms | L/C,T/T,Western Union | Supply Ability | 500 tons per month |
| Delivery Time | 5-20 Days | Packaging Details | Spool package with Carton box, Coil package with polybag, |
| Density | 8.908 g/cm³ | Curie Temperature | 358°C |
| Certification | CE,ROHS | Brand Name | DLX |
| Model Number | Pure Nickel Pipe | Place of Origin | China Jiangsu |
| High Light | 16mm Pure Nickel Pipe ，201 Pure Nickel Pipe ，Cheap Price Pure Nickel Pipe | ||
Industrial process lines fail at their weakest boundary — and for media such as hot caustic alkalis and chlorides, pipe material is that boundary. This 16mm seamless pure nickel pipe is produced from N4 (NP1) high-purity nickel with Ni+Co content of 99.9% or higher, keeping impurity sites to a minimum where corrosion most often starts. Cold-worked seamless construction eliminates the longitudinal weld seam, giving a uniform wall that carries pressure predictably. Diameter, wall thickness and length are customized per drawing, so the pipe fits the line you are building rather than forcing the line to fit a stock size. Each batch is composition-tested and can ship with EN 10204 3.1 material documentation.
| Parameter | Value | Note |
|---|---|---|
| Standard OD | 16 mm | featured size |
| Wall thickness | Custom per drawing | locked at order confirmation |
| Length | Custom per drawing | — |
| Temper | Annealed / cold-worked | per drawing |
| Surface finish | Pickled / bright | per drawing |
| Tolerances | Per ASTM B161 / GB/T 2882-2023 | exact values per drawing |
The 10 kg minimum order for custom pipes covers drawing setup and heat allocation, so tolerances can be locked per drawing; N4 high-purity pipe is available at 3 kg MOQ.
| Aspect | Seamless (cold-worked) | Welded |
|---|---|---|
| Longitudinal weld seam | None | Present |
| Wall uniformity | Uniform around circumference | Dependent on weld zone |
| Pressure applications | Preferred | Acceptable with weld qualification |
| Governing standard | ASTM B161 / GB/T 2882-2023 | ASTM B725 |
MAWP estimated with the Barlow formula MAWP = 2·S·t/D, assuming allowable stress S = 100 MPa and outer diameter D = 16 mm. Actual design values are confirmed per drawing and the governing standard.
| Wall thickness t | MAWP (S = 100 MPa assumed) | Theoretical burst (annealed tensile ≥462 MPa, no safety factor) |
|---|---|---|
| 1.0 mm | 12.5 MPa | ≈57.8 MPa |
| 1.5 mm | 18.75 MPa | ≈86.6 MPa |
| 2.0 mm | 25.0 MPa | ≈115.5 MPa |
All values calculated with stated assumptions — not guaranteed ratings.
Pure nickel pipe is specified in industry primarily for its resistance to hot caustic alkalis and its good behaviour in chloride-containing environments. Grade purity shifts performance: N4 with ≥99.9% Ni+Co minimizes impurity-driven attack; N6 and Ni200 cover general industrial corrosion and chemical service.
| Media class | Recommended grade | Basis |
|---|---|---|
| Hot caustic alkalis (NaOH / KOH) | N4 / Ni200 | High purity + chemical service |
| General industrial corrosion | N6 (NP2) | Best Application: Industrial corrosion |
| Chemical processing | Ni200 | Best Application: Battery, chemical |
| High-temperature service | Ni201 | Best Application: High-temp service |
| Vacuum electronics | N4 | Best Application: Vacuum electronics |
In the annealed temper, pure nickel pipe offers elongation of 35% or more, supporting bending and cold-forming during installation. Bend radii, mandrel requirements and wall-thinning limits depend on the application and must be confirmed per drawing; trial bending is recommended before series production.
| Industry | Typical duty | Suggested grade |
|---|---|---|
| Chemical processing | Caustic / chemical transfer lines | Ni200, N4 |
| Electronics & vacuum | High-purity process tubing | N4 (Ni+Co ≥99.9%) |
| Energy / power | High-temperature piping | Ni201 |
| General industrial | Corrosion service | N6 |
| Grade | Ni Content | Best Application | Reference Price (FOB, USD/kg) |
|---|---|---|---|
| N4 (NP1) | ≥99.9% | Vacuum electronics | 420-480 |
| Ni201 | ≥99.0% | High-temp service | 350-390 |
| Ni200 | ≥99.2% | Battery, chemical | 340-380 |
| N6 (NP2) | ≥99.5% | Industrial corrosion | 300-340 |
Reference prices are FOB indicative ranges per grade; final quotation depends on size, quantity and delivery terms.
| Element (wt%) | N4 | N6 | Ni201 | Ni200 |
|---|---|---|---|---|
| Ni+Co | 99.9 | 99.5 | — | — |
| Ni | — | — | ≥99.0 | ≥99.2 |
| C | ≤0.01 | ≤0.10 | ≤0.02 | ≤0.15 |
| Cu | ≤0.015 | ≤0.10 | ≤0.25 | ≤0.25 |
| Si | ≤0.03 | ≤0.10 | ≤0.35 | ≤0.35 |
| Mn | ≤0.002 | ≤0.05 | ≤0.35 | ≤0.35 |
| Fe | ≤0.04 | ≤0.10 | ≤0.40 | ≤0.40 |
| S | ≤0.001 | ≤0.005 | ≤0.01 | ≤0.01 |
| P | ≤0.001 | ≤0.002 | — | — |
| Mg | ≤0.01 | ≤0.10 | — | — |
Source: DLX product catalogue; per-batch verification available on request.
| Density | 8.908 g/cm³ |
| Melting point | 1435-1446°C |
| Curie temperature | 358°C |
| Tensile strength (annealed) | ≥462 MPa |
| Elongation (annealed) | ≥35% |
| Hardness (annealed) | 90-120 HB |
| Shear modulus | ~76 GPa |
| Electrical resistivity | 0.096 μΩ·m (20°C) |
| Thermal conductivity (Ni200) | 70.2 W/m·K |
| Form | Seamless pure nickel pipe (cold-worked) |
| Featured size | 16 mm OD |
| Custom range | OD / wall thickness / length per drawing |
| Temper | Annealed / cold-worked per drawing |
| Surface finish | Pickled / bright per drawing |
| Packaging | Bundled, end-protected, wooden cases |
| Ni200 / Ni201 | ASTM B161 (Seamless Nickel Pipe and Tube); ASTM B163 (Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes); ASTM B725 (Welded Nickel Pipe, where welded construction is specified) |
| N4 (NP1) / N6 (NP2) | GB/T 2882-2023 (Nickel and Nickel Alloy Pipe, published 2023-11-27, effective 2024-06-01, currently in force) |
Pipes are bundled with end protection to prevent edge and surface damage in transit, and shipped in wooden cases for export. Lead time: 7-15 days. Material certificates and inspection documents accompany each shipment.
Changzhou DLX Alloy Co., Ltd. has manufactured nickel alloys since 2002 in a 12,000 m² factory rated at 1,200 tonnes per year. For pipe, our engineering view is simple: a pipe is a pressure boundary, and the boundary is only as good as the material it is drawn from. Every DLX pipe order is treated that way — grade confirmed against media, dimensions locked per drawing, batch composition tested, and pressure integrity documented before it ships.
A: All dimensions beyond the 16mm OD standard — wall thickness, length and non-standard outer diameters — are manufactured per drawing, with tolerances locked at order confirmation.
A: Yes for N4 (NP1), with Ni+Co of 99.9% or higher. Composition is tested per batch and can be documented with an EN 10204 3.1 material certificate.
A: The grade matrix (N4 / N6 / Ni200 / Ni201) covers high-purity, general corrosion, chemical and high-temperature service. Share the media and operating conditions, and we will confirm the grade.
A: Ni200 / Ni201 pipes follow ASTM B161 (seamless), with B163 and B725 referenced by service; N4 / N6 pipes follow GB/T 2882-2023, effective since 2024-06-01.
A: 3 kg for N4 high-purity pipe; 10 kg for custom standard-grade pipes. Sample policy: free 0.5 kg for N6 / Ni200; N4 and Ni201 samples are charged, refundable with first orders above 50 kg.
Company Details
Business Type:
Manufacturer,Seller
Year Established:
2002
Total Annual:
1000000-120000000+
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Changzhou DLX Alloy Co., Ltd. was established in 2002 and has passed ISO9001 international quality management system certification and SGS certification.We initially focused on the production of resistance alloys. Over the past 20 years, we have continued to conduct research and development and now ... Changzhou DLX Alloy Co., Ltd. was established in 2002 and has passed ISO9001 international quality management system certification and SGS certification.We initially focused on the production of resistance alloys. Over the past 20 years, we have continued to conduct research and development and now ...
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