HC ALUMINUM has produced and supplied copper nickel alloy pipes, marine flanges and pipe fittings for more than 20 years. With our own copper nickel pipe production facility, forging capability, wide stock range and in-house testing labs, we provide reliable CuNi piping solutions for shipbuilding, offshore and seawater systems.
Complete CuNi Piping Package
Pipes, elbows, tees, reducers, threaded fittings and marine flanges supplied according to DIN, ASTM, EEMUA, EN and JIS standards.
HC ALUMINUM offers a complete range of copper nickel alloy piping products, including CuNi pipes, elbows, tees, reducers, threaded fittings, end caps and marine flanges. Products are commonly supplied in CuNi 90/10 and other copper nickel grades according to DIN, ASTM, EEMUA, EN and JIS standards.
Copper-nickel pipes are widely used in marine cooling, fire main, and bilge systems because they resist seawater corrosion well.
We supply copper nickel 90° and 45° elbows in long radius and short radius types for marine pipeline direction changes.
View Copper Nickel Elbows →
Marine inner weld flanges are available in 5K and 10K pressure ratings for shipbuilding and marine piping connections.
Copper nickel equal tees and unequal tees are used for branch connections in seawater piping systems.
Concentric reducers are supplied for connecting pipes of different diameters while maintaining smooth flow in marine systems.
BSP sockets and BSP threaded nipples are available for threaded copper nickel piping connections.
Copper nickel end caps are used to seal the ends of CuNi piping systems in marine seawater, cooling water and shipbuilding applications.
Copper nickel alloy is widely selected for marine piping systems due to its strong resistance to seawater corrosion, biofouling and erosion. HC ALUMINUM supplies pipes, flanges and fittings for key shipboard systems.
Copper nickel pipes and fittings are used in seawater cooling lines for engines, heat exchangers and auxiliary equipment.
CuNi piping components provide reliable performance for marine fire main systems requiring corrosion-resistant pipeline materials.
Copper nickel pipes, elbows, tees and reducers are suitable for bilge water systems exposed to harsh marine environments.
HC ALUMINUM supplies copper nickel pipes, fittings and flanges for marine seawater systems, offshore projects, shipbuilding, desalination plants and industrial piping applications. Products can be manufactured or sourced in accordance with ASTM, ASME, DIN, EN and EEMUA standards, with material grades and dimensions selected to meet project specifications.
| Standard | Product Scope | Application and Description |
| ASTM B466 / ASME SB466 | Copper Nickel Pipes and Tubes | Covers seamless copper nickel alloy pipe and tube, commonly used for seawater piping, heat exchangers, condensers and offshore service. Typical alloys include 90/10 and 70/30 copper nickel grades. |
| EEMUA 144 / EEMUA 234 | Marine Copper Nickel Piping Systems | Widely specified for copper nickel piping in shipbuilding, offshore platforms and marine engineering. These standards are often used for seawater, bilge, ballast, cooling water and fire-fighting lines. |
| DIN 86019 / DIN 86018 | Copper Nickel Pipes | German marine piping standards for copper nickel pipe systems. Suitable for seawater pipelines and related shipboard applications requiring reliable corrosion resistance. |
| EN Standards | Copper Nickel Pipes and Tubes | European standards for copper and copper alloy products, including copper nickel materials used in marine, offshore and industrial piping projects. |
| ASME B16.5 | Pipe Flanges and Flanged Fittings | Standard for pipe flanges and flanged fittings, including pressure-temperature ratings, dimensions, tolerances, marking and testing requirements. |
| DIN 86037 | Marine Flanges | Marine flange standard commonly applied to shipbuilding and seawater piping systems. Available with copper nickel pipes and related fittings according to project drawings. |
| ASME B16.9 | Butt Welding Pipe Fittings | Covers factory-made wrought butt welding fittings such as elbows, tees, reducers and caps. Often used where copper nickel fittings must match ASME piping requirements. |
| DIN 86089 | Copper Nickel Pipe Fittings | DIN marine fitting standard for copper nickel piping systems, including fittings used in seawater and shipboard service lines. |
| JIS B2220 | Pipe Flanges | Japanese standard for pipe flanges used in industrial and marine piping systems. Available when required for projects using JIS flange connections. |
Common material o.ptions include CuNi 90/10 and CuNi 70/30, such as C70600, C71500, CuNi10Fe1Mn, CuNi30Mn1Fe and equivalent EN or DIN grades. Wall thickness, outside diameter, flange rating, end connection and inspection requirements can be supplied according to customer drawings, technical specifications or class society requirements
HC ALUMINUM operates its own copper nickel pipe production and forging facilities, giving us better control over material preparation, forming, machining, inspection and delivery schedules. Our wide stock range helps reduce lead times for standard sizes and urgent marine piping projects.
HC ALUMINUM operates advanced labs and strict quality control to ensure copper nickel pipes, flanges and fittings meet customer and standard requirements.
Quality is monitored from raw material to shipment, including chemical analysis, mechanical testing, dimensional inspection, hydrostatic testing, PMI testing and full material traceability.
Our copper nickel pipes and fittings are supplied for shipyards, marine engineering companies, offshore contractors and industrial piping distributors. Whether you need standard CuNi 90/10 pipes or complete pipe fitting packages, our team can support material selection, quotation and delivery planning.
What is CuNi 90/10 pipe used for?
CuNi 90/10 pipe is commonly used in marine seawater cooling systems, fire main systems, bilge systems, offshore piping and other seawater service applications because of its corrosion resistance and durability.
Do you supply copper nickel pipe fittings together with pipes?
Yes. HC ALUMINUM supplies copper nickel pipes, elbows, tees, reducers, threaded fittings and marine flanges as a complete piping package.
Which standards can you supply?
We supply products according to DIN 86019 / EN 12450, ASTM B466 / ASME SB466, EEMUA, JIS B2220 and customer project specifications.
Can you provide mill test certificates?
Yes. Material certificates and inspection documents can be provided according to order requirements.
Do you have stock for common CuNi pipe sizes?
HC ALUMINUM maintains a wide stock range for common copper nickel pipe sizes and fittings to support fast delivery.
Can you manufacture custom copper nickel flanges and fittings?
Yes. With forging and machining capability, we can supply standard and customized marine flanges and fittings based on drawings or project requirements.
