High Purity 99.9% Pure Nickel Tube with Customized Size and Thermal Stress

Industrial systems that cycle between temperatures punish pipe materials: differential expansion, oxidation and fatigue at seams all shorten service life. High Purity 99.9 Pure Nickel Tube is precision-engineered to meet that duty, with 99.9% nickel purity (N4, Ni+Co ≥99.9%), seamless construction and customized sizing. Manufactured to exacting standards, these tubes offer superior resistance to corrosion, oxidation, and thermal stress. Ideal for demanding applications in electronics, telecommunications, and automotive industries, our nickel tubes ensure optimal functionality and longevity.

The 10 kg minimum order for custom tubes covers drawing setup and heat allocation, so tolerances can be locked per drawing; N4 high-purity tube is available at 3 kg MOQ.

• 99.9% high purity — N4 (NP1) with Ni+Co ≥99.9%, keeping total impurities below 0.1%.
• Thermal stress resistance — built for thermal cycling and elevated-temperature service.
• Corrosion and oxidation resistance — dependable in caustic, chloride and oxidizing media.
• Customized size — OD, wall thickness and length manufactured per drawing.
• Seamless construction — formed by extrusion and cold drawing, with no longitudinal weld seam.

Thermal stress in service comes from temperature gradients, differential expansion and oxidation. Pure nickel's stable face-centred-cubic structure avoids brittle transitions, while annealed ductility of 35% or more lets the tube accommodate differential expansion instead of cracking. Physical anchors: melting point 1435-1446°C, Curie temperature 358°C, thermal conductivity 70.2 W/m·K (Ni200). For sustained high-temperature service, the low-carbon Ni201 grade is the selection; for maximum purity, N4 (Ni+Co ≥99.9%).

MAWP estimated with the Barlow formula MAWP = 2·S·t/D for a reference tube of 16 mm OD, assuming allowable stress S = 100 MPa. Size is customized per drawing; actual design values are confirmed per drawing and the governing standard.

All values calculated with stated assumptions — not guaranteed ratings.

Each tube follows a controlled in-house process chain:

1. Raw Material Selection
2. Smelting
3. Casting
4. Extrusion
5. Cold Drawing
6. Annealing
7. Surface Treatment
8. Final Inspection and Packaging

Reference prices are FOB indicative ranges per grade; final quotation depends on size, quantity and delivery terms.

Source: DLX product catalogue; per-batch verification available on request.

• Per-batch chemical composition testing with full traceability
• Dimensional inspection: OD, wall thickness and concentricity per governing standard
• Pressure verification per governing standard (ASTM B161 / GB/T 2882-2023)
• EN 10204 3.1 material test certificate available with shipment

Tubes 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. Tube production runs in-house from extrusion and cold drawing through annealing and final inspection — a single chain of custody that controls wall uniformity and thermal-stress behaviour from billet to finished tube. Because the plant processes nickel alloys exclusively, cross-contamination is engineered out at the source.

A: Seamless construction removes the weld seam that can act as a preferential fatigue site, while annealed ductility of 35% or more lets the tube accommodate differential expansion. For sustained high-temperature service, choose the low-carbon Ni201 grade.

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: Yes. OD, wall thickness and length are manufactured per drawing, with tolerances locked at order confirmation.

A: Ni200 / Ni201 tubes follow ASTM B161 (seamless), with B163 and B725 referenced by service; N4 / N6 tubes follow GB/T 2882-2023, effective since 2024-06-01.

A: 3 kg for N4 high-purity tube; 10 kg for custom standard-grade tubes. Sample policy: free 0.5 kg for N6 / Ni200; N4 and Ni201 samples are charged, refundable with first orders above 50 kg.