Pure Nickel Pipe — Seawater & High-Temp Resistant, Custom Sizes

Marine platforms, coastal plants and heat-exposed process lines place two demands on the same pipe: it must hold up against seawater and chlorides, and it must keep its integrity at elevated temperature. This pure nickel pipe is offered in Ni200 (UNS N02200) and Ni201 (UNS N02201) — Ni200 for chemical and marine service, low-carbon Ni201 where high-temperature duty matters. Seamless construction removes the weld seam, and custom sizing lets the pipe match the installation exactly. Per-batch composition testing and EN 10204 3.1 documentation accompany every shipment.

The 10 kg minimum order for custom pipes covers drawing setup and heat allocation, so tolerances can be locked per drawing.

• Seawater resistance — good behaviour in marine and chloride environments for coastal and offshore service.
• High-temperature resistance — low-carbon Ni201 (C ≤0.02%) for elevated-temperature duty.
• Ni200 and Ni201 grades — UNS N02200 for chemical service, UNS N02201 for high-temperature service.
• Customized size — OD, wall thickness and length manufactured per drawing.
• Seamless construction — cold-worked seamless pipe with no longitudinal weld seam.

Pure nickel is regarded as a dependable material in marine environments, resisting seawater and chloride-bearing media across a wide range of service conditions. Actual performance in seawater depends on temperature, flow velocity and aeration, so the grade and wall schedule are confirmed against the specific installation. For marine duty, Ni200 and Ni201 both apply; share your service conditions and we will confirm the grade and dimensions.

At elevated temperature, carbon content decides whether the material keeps its ductility. Ni201 holds carbon at or below 0.02%, limiting carbide precipitation and the embrittlement that follows — which is why it is specified for high-temperature service. Physical anchors for the family: melting point 1435-1446°C and annealed elongation of 35% or more. Maximum service temperature is confirmed against the actual duty and the governing standard.

MAWP estimated with the Barlow formula MAWP = 2·S·t/D for a reference pipe 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.

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

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. When a pipe must resist both seawater and elevated temperature, the two requirements pull in different directions — corrosion resistance asks for purity, high-temperature service asks for low carbon. Our engineering approach coordinates both: grade selection balanced against the composition table, process control through drawing and annealing, and per-batch verification with EN 10204 3.1 documentation.

A: Pure nickel is a dependable material in marine environments, resisting seawater and chloride-bearing media. Performance depends on temperature, flow velocity and aeration; provide your service conditions and we will confirm the grade and dimensions.

A: The carbon content: Ni200 at ≤0.15% for chemical and marine service, Ni201 at ≤0.02% for elevated-temperature service where carbide precipitation matters.

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

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: 10 kg for custom pipes. Sample policy: free 0.5 kg for Ni200 / N6; Ni201 and N4 samples are charged, refundable with first orders above 50 kg.