Copper Nickel Pipes

Seawater & Marine Piping

Copper Nickel Pipes

CuNi 90/10 & 70/30 pipes engineered for seawater cooling, desalination and offshore piping systems.

Copper Nickel Pipes

ASTM / ASME Certified Material

Product Overview

Copper nickel alloys resist biofouling and seawater corrosion better than almost any other economical piping material, making CuNi the standard choice for seawater-cooled condensers, marine piping and desalination plant.

We stock both 90/10 and the higher-alloy 70/30 grade, selected on flow velocity and service temperature to avoid erosion-corrosion in critical marine circuits.

Size Range1/2″ – 24″ NB
Wall ThicknessSCH 10 – 40
FormSeamless & Welded
CertificationEN 10204 3.1 Mill Test Cert.

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Copper Nickel Pipes — In Our Stockyard

Specification

Available Grades

Grade	Standard	Typical Service
CuNi 90/10 (UNS C70600)	ASTM B466 / B467	General seawater piping & condenser tubing
CuNi 70/30 (UNS C71500)	ASTM B466 / B467	Higher velocity / higher-duty seawater service

Technical Data

Specifications

Outside Diameter15mm – 610mm
Wall Thickness1mm – 12mm
LengthUp to 6m, random or cut
ManufactureSeamless, Welded

End FinishPlain, Bevelled, Flanged
TestingHydrostatic, Eddy Current
CertificationEN 10204 3.1 Mill Test Cert.
PackingBundled, wooden crates for export

Technical Note — Grade selection is guided by design flow velocity — 90/10 suits general seawater lines while 70/30 is recommended above roughly 3.5 m/s to hold erosion-corrosion margins on critical condenser and cooling circuits.

Where It's Used

Applications

Marine & Shipbuilding

Desalination Plants

Offshore Platforms

Power Plant Condensers

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