ASTM B466 C71500 CuNi 70/30 Copper Nickel Seamless Pipe Anti-Corrosion Tube

ASTM B466 C71500 CuNi 70/30 Copper Nickel Seamless Pipe Anti-Corrosion Tube

1.Product Description 

Copper‑nickel tubing, commonly referred to as CuNi pipe, is manufactured from binary copper‑nickel alloys, with the two standardised compositions being C70600 (90‑10) and C71500 (70‑30). Minor alloying elements such as iron and manganese are deliberately added to enhance specific properties. The product range includes both seamless and longitudinally welded types, and production strictly follows internationally recognised norms including ASTM B466, ASTM B111, ASME SB111, EN 12451, and JIS H3300. This material family is globally acknowledged as a premium solution for piping systems exposed to aggressive aqueous environments, particularly seawater.

2.Distinctive Strengths

• Remarkable seawater endurance – Laboratory and field data show yearly metal loss below 0.03 mm, outperforming many corrosion‑resistant alloys.

• Inherent fouling prevention – The continuous leaching of cupric ions creates a biostatic surface layer, effectively repelling barnacles, molluscs, and weed growth.

• Resilience to flow‑induced wear – Withstands high‑velocity particle‑bearing streams; the 70‑30 grade offers enhanced safety margins under turbulent conditions.

• Superb workability – Readily shaped by bending, flanging, and swaging; can be joined by welding or brazing using standard shop equipment.

• Extended operational lifetime – Documented cases of half‑century service in marine circuits with negligible deterioration.

• Weight‑saving potential – Equivalent pressure ratings often demand reduced wall gauges compared to ferrous materials, trimming overall structural mass.

• Zero susceptibility to chloride‑induced cracking – Eliminates the reliability concerns associated with austenitic stainless steels in saline media.

• Economically competitive – Provides a balanced trade‑off between performance and upfront expenditure, significantly cheaper than high‑nickel or titanium alternatives.

3.Typical Fields of Use

• Merchant and naval shipbuilding – Seawater intake, firemain, ballast, bilge, and domestic water circuits; also employed in steering gear hydraulics and pneumatics.

• Offshore hydrocarbon production – Deck piping on platforms, topside modules on FPSO vessels, subsea control umbilicals, and riser cladding applications.

• Thermal desalination plants – Heat transfer tubing in evaporators, brine preheaters, and inter‑stage connecting lines for MSF and MED units.

• Conventional and nuclear power stations – Main condenser tubes, auxiliary cooling water loops, and steam side heat exchangers.

• Industrial thermal exchange – Shell‑and‑tube reboilers, condensers, and cooler bundles in petrochemical, chemical, and pharmaceutical sectors.

• Emerging marine renewables – Cooling circuits for floating wind turbines, tidal stream generators, and wave energy converters.

• Aquaculture infrastructure – High‑volume seawater delivery mains, cage structural framing, and pumping station pipework.

• Specialised transport – Hydraulic brake tubes and power‑assisted steering lines in automotive; bleed‑air ducting and thrust reverser actuators in aircraft.

4.Key Product Parameters

FAQ

1. Are you trading company or manufacturer ? We are manufacturer ,You can see the certification.

2. How long is your delivery time? Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity. 3. Do you provide samples ? is it free or extra ? Yes, we could offer the sample for free charge but need pay the cost of freight.

4. What is your terms of payment ? Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.