Cupro Nickel Pipes

Shihang Cupro Nickel Pipe is trusted for high tensile strength, flexibility, easier weldability, formability, thermal stability, superior erosion, and corrosion resistance. It is also referred to as Copper Nickel Pipe or CuNi Pipe.

Shihang Cupro Nickel Pipe is an alloy of Ni, Fe, Mn, Zn, Pb, P, S, C, Sn and Cu, mixed in different quantities, according to the ASME B36.19 M, DIN 86019, EEMUA 144 and MIL-T-16420 standards.

Cupro Nickel Pipes

Cupro Nickel Pipes

Cupro Nickel Pipes

Cupro Nickel Pipes Specifications

Cupro Nickel Pipe Specifications : ASTM / ASME SB 111  / 466 / 7060X/ CuNi10Fe1.6Mn/ CN102

Cupro Nickel Pipe Standard : ASTM, ASME B36.19,DIN 86019, EEMUA 144,EEMUA 234,MIL-T-16420K

Cupro Nickel Pipe Size : 1/2″ TO 20′ IN,DN15 TO DN500

Outer Diameter : 15mm to 508mm

Wall Thickness : Between 1mm and 11 mm

Length : mainly 6meter or required Length

Schedule : sch10,sch40,sch80,std

Cupro Nickel Pipe Pressure Rating:

10bar, 14bar for DIN 86019

16bar,20bar for EEMUA 144,EEMUA 234

Class 200, Class 700 for MIL-T-16420K.

Types : Seamless less than 419mm ( included 419mm) / Seam Welded ( over 419mm )

End : Plain End, Beveled End, Treaded

Grades : Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640

Cupro Nickel Pipes

Cupro Nickel Pipes Chemical Composition

Cupro Nickel Pipes

Cupro Nickel Pipes Material Properties

CuNi Pipe Weight Calculator

Weight per KG= ( OD – THK ) * THK * 0.028

OD means outer diameter of the CuNi Pipe

THK means the thickness of the CuNi Pipe

Cupro Nickel Pipe Guide

Cupro Nickel Pipe Manufacturer

Shihang Cupro Nickel Pipes are suitable for most applications in marine, shipbuilding, offshore oil platform, petroleum industries, pulp & paper industry, power generation, condensers, heat exchangers, etc.

Shihang stocks C70600 Cupro Nickel Pipes and C71500 Cupro Nickel Pipes for marine and offshore applications. Due to excellent resistance to virtually all sea organisms, Shihang Cupro Nickel Pipe is a reliable pipe for fire fighting systems and seawater desalination.

Shihang Cupro Nickel Pipes are available in varied pressure rating according to the DIN86019, EEMUA 144, ASME B36.10M and MIL-T-16420 standards. Shihang offers both seamless Cupro Nickel Pipe (OD 16mm to OD 419mm) and welded Cupro Nickel Pipes (OD 457mm or more).

Our Cupro Nickel Pipes have plain or beveled ends and 6m max length. Shihang Cupro Nickel Pipe dimensions include ½ inches to 24 inches NB and OD in distinctive thickness.

Shihang is a known Cupro nickel pipes manufacturer for marine, shipbuilding, and offshore application.

We ensure accurate Cupro Nickel Pipe chemical position, using high-tech testing equipment such as Hydrostatical testing machine, Tensile strength testing machine and German brand Spectrograph.

Shihang installed the latest 300T Hydraulic Elongator, 55KN Direct Extrusion Press, 35KN Indirect Extrusion Press, and OTTO JUNKER Furnace. Our production capacity is 30T Cupro Nickel Pipes per month, and we can handle your bulk orders for copper nickel pipes.

Shihang has a wide range of Cupro Nickel Pipes in stock, and we guarantee fast delivery (30 days for normal orders).

For your complete Cupro Nickel Pipe systems, Shihang supplies flanges and fittings.

At Shihang, we use seaworthy wooded case packing for all Cupro Nickel Pipes, guaranteeing safe and reliable shipping.

Contact Shihang today for your custom Cupro Nickel Pipe requirements.

Cupronickel Pipe: The Ultimate FAQ Guide

Today’s guide will answer all questions you have about Cupronickel pipes.

It will help you become an expert in copper nickel pipe systems.

Take a look:

What is the Cost of Cupronickel Pipes?

There are different prices for cupronickel pipes in the market due to:

Cupronickel pipes

Cupronickel Pipe

· Manufacturing Company

Cupronickel pipe manufacturers offer competitive prices in order to get a slide of the demanding market.

This ensures that you can get a manufacturer who has a better price for your pipes.

On this, you can count on Shihang for the best prices on copper nickel pipes.

· Cupronickel Grade

Getting the right price to depend on the cupronickel grade that you want.

The different cupronickel grades available have unique features and are ideal for use in different applications making their price differ.

You can choose cupronickel 70/30 pipes or cupronickel 90/10 pipes.

· Minimum Order Quantity

Manufacturers offer different MOQs for their cupronickel pipes.

A manufacturer with a high MOQ tends to have a lower price when you compare with one that has a low MOQ.

Other factors that affect price of cupronickel pipes include:

i. Quality standard specification

ii. Length with maximum length being 7 meters

iii. End configuration of the pipe

iv. Pressure rating

v. Diameter

vi. Specific applications

What are the Advantages of Cupronickel Pipe?

Cupronickel pipes has the following benefits:

  • It has minimal expansion rate allowing for intact connection even in the events of uneven expansion rate
  • They don’t easily corrode which means you in salinity environment
  • You can easily modify them to the design you want
  • They have minimal thermal conductivity
  • They are attractive due to their aesthetic appearance
  • They are resistance to macro fouling which facilitates their performance.

Are there Disadvantages of Cupronickel Pipes?


For instance, their higher cost can be discouraging compared to other types.

Such costs include the initial purchasing cost, regular maintenance and the cost of hiring professionals to do the job.

What is the Best Way to Cut Cupronickel Pipes?

Cutting of cupronickel pipes involves using band saws and shears. You need to avoid using oxy-fuel cutting on these pipes.

Are there Special Surface Finishing for Cupronickel Pipe?

Yes. special cupronickel pipe’s surface finishing includes:

  • Coldwater finish
  • Concentric serrated
  • Spiral serrated
  • Smooth finish
  • Stock finish

What are the Welding Options for Cupronickel Pipes?

Welding options for cupronickel pipes are:

  • Shielded metal arc which welds using CuNi electrode and reverse polarity.
  • Gas metal arc
  • Gas tungsten option
  • Resistance welding option

What are the Cupronickel Pipe End Designs?

Cupronickel pipe end designs available include:

· Threaded End Design

You can find this design in cupronickel pipe that are three inches in size or less.

They are easy to connect since you only screw the end to your piping application.

Also, they are either female or male cupronickel pipes.

· Beveled End Design

Beveled end cupronickel pipes are not at right angle to any plane.

You can use these pipes in welding application.

· Plain End Design

Plain end cupronickel pipes are at right angle to the surface.

They are of use in slip-on flange and socket weld flanges.

What makes Cupronickel Pipes Best Choice for Seawater Piping?

Cupronickel pipes usage in seawater piping is due to the following reasons:

  • They are corrosion-proof
  • you can easily modify these pipes to fit your requirements.
  • They have a minimal expansion rate which is useful in cases of the uneven expansion rate.
  • They prohibit macro fouling
  • They have good antimicrobial characteristics.
  • They have a good thermal conductivity
  • They are cavitation proof.

Cupronickel pipe in sea water

Cupronickel pipe in sea water

How do you Test Quality of Cupronickel Pipes?

You have to test the raw material’s chemical composition, control this chemical composition, and checking its dimensional properties.

You also have to test and verify the cupronickel’ quality. while performing these measures, you have to use the following test:

  • Tensile tests
  • Visual inspection test
  • Magnetic particle inspection test
  • Ultrasonic test
  • Hydrostatic tests
  • Proof tests

What are the Best Packaging Options for Cupronickel Pipes?

Packaging cupronickel pipes involves the use of the following:

  • Wooden crates
  • Bundle packaging
  • Steel crates
  • Wooden boxes

Before final packaging, you have to individually wrap the pipes using a nylon cover and end caps.

This prevents scratches on the pipes.

How do you Specify Cupronickel Pipe?

Specification of cupronickel pipes involves the following considerations:

i. Operating Pressure and Temperature

For effective cupronickel performance, the operating temperature and pressure of your cupronickel pipe should be within that of your piping application.

ii. Cupronickel Pipe Grade

The different cupronickel pipe grades have different characteristics that suits their different applications.

Specifying on the grade ensures you get the right one for your piping needs.

iii. Standards

American standards differ with European and Japanese standards in terms of size and design.

You have to specify which standard you want for proper functioning of your application.

At the same time, you should specify the pipe length, end configuration and specific application.

How do you Measure the Diameter of Cupronickel Pipes?

Get the circumference of the internal part of your cupronickel pipe and divide it by 3.14 to get the diameter.

This gives you the actual measurement of the diameter of your Cupronickel pipe.

What are the Uses of Cupronickel Pipes?

You will find the use of cupronickel pipes common in marine applications because of their characteristics.

These characteristics include minimal macrofouling, corrosion proof, and low biofouling.

Cupronickel pipe uses are in:

  • Marine riser
  • Heat exchanger
  • Firewater system
  • Condenser system
  • Ballast pipes
  • Offshore piping
  • Gasoline tank piping system
  • Freshwater tank piping system
  • Water and steam piping
  • Offshore platform leg sheathing.
  • Oil towers
  • Valve system

How does Cupronickel Tube compare to Cupronickel Pipes?

Their chemical composition is the same depending on the cupronickel grade.

They differ in terms of their structure.

The structure of cupronickel pipe is usually hollow and round.

A cupronickel tube has a structure that is mainly square, rectangular, oval or round.

Is there Maximum Length for Cupronickel Pipes?

The standard length of cupronickel pipe is 6 meters.

However, a reliable manufacturer can customize the length depending on your specifications.

What is the Maximum Diameter for Cupronickel Pipes?

The maximum diameter for cupronickel pipes is 419mm for seamless copper nickel pipes depending on your specifications.

Such technology uses 600kG cupronickel ingot and a 300T hydraulic elongator.

For extruded copper nickel pipes, the outer diameters can be over 457 mm.

Why Import from Cupronickel Pipe Manufacturers in China?

Among the reasons that you need to import your cupronickel pipes from China include:

· Quality Cupronickel Pipe

Most Cupronickel pipe manufacturers in China ensure their process adheres to the strict standards that guarantee quality.

Any defect is easily detected and removed from the production process.

Furthermore, they have proper storage mechanisms for their cupronickel pipes which minimizes damages

· Wide range of Cupronickel Pipe Manufacturing Capability

Shihang is among the few companies that can produce seamless copper nickel pipes with a maximum of 419.

For the welded copper nickel pipes, the diameter can be bigger – more than 457mm.

· Competitive Prices on Copper Nickel Pipes

There are competitive prices in China for your cupronickel pipes due to the high demand and many manufacturers.

Of course, the cost effective prices in copper nickel prices also due to:

i. Advanced technologies in cupronickel manufacturing process

ii. Availability of raw material

iii. Affordable labor

You are always certain of finding the best price.

Factors that affect the price include MOQ and the design of your cupronickel pipes

How do you Determine Pressure Rating of Cupronickel Pipes?

The pressure rating of a cupronickel pipe depends on dimensional standard specifications.

How does Seamless Cupronickel Pipes compare to Welded Cupronickel Pipes?

The outer diameter for the seamless cupronickel pipe has a range of between 16 and 419mm. For welded pipe, it is above 457mm

Seamless cupronickel pipes lack joint which is common in welded cupronickel pipes.

The manufacturing process of seamless cupronickel pipes involves extrusion while welded cupronickel pipe uses a coil or strip.

Seamless cupronickel pipes are relatively expensive than welded cupronickel pipes.

The strength and structure of seamless pipes is uniform across its cross-section.

Welded cupronickel pipes have varying strength and structure depending on how accurate the rolling and welding methods are.

Seamless cupronickel pipes are common in applications that have high temperature, pressure and mechanical stress.

Welded cupronickel pipes are of use in applications that have moderate temperature, pressure and mechanical stress.

The fabrication process of seamless cupronickel pipes uses mandrel mill, forging, plug rolling mill and extrusion method.

Manufacture of welded cupronickel pipes goes through various process.

First, is the formation of a circular section using continuous rolling, point pressing or plate rolling methods.

Then there is welding of the cross-section using high frequency, submerged arc welding or electric resistance methods.

What are the Common Cupronickel Pipe Alloy Grades?

Cupronickel pipes have the following grades depending on the chemical composition:

  • 70-30% cupronickel alloy
  • 90-10% cupronickel alloy

What is the Chemical Composition of Cupronickel Pipes?

The different cupronickel alloy grades have different chemical compositions.

Take a look at this:

· DIN 86019

        DIN 86019 2.1972 (CuNi10Fe1.6Mn)          
Cu% Ni% Fe% Mn% C% Pb% S% P% Zn% other
Rem. 9.0-11.0 1.5-1.8 0.5-1.0 Max. 0.05 Max. 0.01 Max. 0.005 Max. 0.02 Max 0.05 _


· EEMUA 144

        EEMUA 144 UNS 7060X          
Cu% Ni% Fe% Mn% C% Pb% S% P% Zn% other
Balance 10.0-11.0 1.5 – 2.0 0.5 – 1.0 Max 0.05 Max 0.01 Max 0.02 Max 0.02 Max 0.20 0.30


· ASME B36.19M


ASTM B466     C70600

Cu% Ni% Fe% Mn% C% Pb% S% P% Zn% other
Balance 9.0 – 11.0 1.0 – 1.8 Max 1.0 Max 0.05 Max 0.02 Max 0.02 Max 0.02 Max 0.50 _

Can you Customize Cupronickel Pipe Grade?


You can easily customize your cupronickel pipe grade.

However, the customization process should adhere to the relevant quality standards and specifications.

How does DIN 86019 Cupronickel Pipe compare to EEMUA Cupronickel Pipe?

DIN 86019 refers to standard dimensions for CuNi10Fe1, 6Mn Pipes.

They also analyze the dimensional specifications of seamless cupronickel tubes.

EEMUA defines specifications and dimensional standards for cupronickel pipes.

Both the DIN and EEMUA standards are enforced within the European Region.

However, they are used globally as standards specifications in the cupronickel pipe.

Which Cupronickel Pipe Fittings are there?

Cupronickel pipe fittings

Cupronickel pipe fitting

The main types of copper nickel pipe fittings available are:

  • Endcap fittings are for covering dead ends within a piping system
  • Saddle pipe fitting is part of tee pipe fitting and gives support to your piping system. This support is through the transmission of a given weight to nearby structures.
  • Stub-ends is common in butt welding, especially when there is a use of a lap joint flange.
  • Coupling fitting which connects various piping systems
  • Tee fittings cause a division in the fluid flow within a piping system.
  • A reducer fitting reduces your piping system size
  • Adapter fitting connects two different piping accessories.
  • Elbow fittings work by changing the direction of the piping system depending on the system’s design
  • Cross fitting has an inlet and three outlets that allow for easy distribution of the fluid in a piping system
  • Union fitting joins various piping systems while giving space for disconnections.
  • 180 ° bend fitting redirects the flow of fluid by 180 degrees.

Which Types of Cupronickel Pipe Flanges available?

The following are the main types of copper nickel pipe flanges available:

  • Cupronickel threaded flange consists of an internal bore that has threads matching those of cupronickel pipe’s male threads
  • Cupronickel blind flange is a piece of solid cupronickel metal which does not have surface holes. This facilitates smooth fluid flow.
  • Cupronickel lap joint flange consists of a raised face with a grooved machined. The grooved machined part allows for a metal ring gasket.
  • Cupronickel composite slip-on flange features an inner flange and an outer flange. It mainly has two materials, that is, carbon steel and copper-nickel alloy
  • Cupronickel socket weld flange has a flange bore that includes a shoulder section and a recessed area. It also has two holes.

How do you Manufacture Seamless Cupronickel Pipes?

You can manufacturer seamless cupronickel pipes using one of the following methods:

i. Mandrel Mill Method

Mandrell mill method

Mandrel mill method

This method involves heating a billet metal using a rotary heating surface.

A piercer creates a hollow structure within the heated billet.

The next step involves rolling of the hollow billet to reduce its outer diameter as well as the wall thickness.

This forms different mother tubes which you heat to specific standards using a stretch reducer.

ii. Forging Method

The use of this method is common in pipes that require large diameters.

It involves the following steps:

Making of a forged die whose diameter is larger when you compare to the pipe you are fabricating

  • Placing of the hot copper-nickel billets into a die
  • Forming of copper-nickel pipes using a hydraulic press.
  • Taking it through the various finishing
  • Inspection of quality of your final copper-nickel pipe

Forging method

Forging method

iii. Plug Rolling Mill Method

This method goes through the following steps:

  • Preparation of copper-nickel billets. This is through cutting the billets into small pieces.
  • Heating of the copper-nickel billets under a plastic deformation temperature using a rotary surface.
  • Piercing of the hot copper-nickel billet using a mandrel.
  • Passing of the pierced copper-nickel billet through elongator. This increases its length.
  • Reducing the thickness using a plug mill
  • Passing of the copper-nickel through a reeler to smoothen and improve its dimensions.
  • Reheating the copper-nickel pipe and resizing it to improve its dimensions.
  • Passing the copper-nickel through heat treatment. This restores the microstructure of the pipe.
  • Cooling copper-nickel pipes and straightening them
  • Inspection of the final quality of your copper nickel pipes.

plug mill rolling

Plug mill rolling

iv. Extrusion Method

Extrusion method goes through the following critical steps:

  • heating of the copper-nickel pipes
  • placing this heated copper-nickel billet in a die and pushing it through a piercing mandrel using a hydraulic ram.
  • While the billet is moving through the piercing mandrel, it forms a copper-nickel pipe
  • The copper-nickel pipe then goes through various finishing options
  • Inspection of the final quality of copper-nickel pipes

This method is critical in pipes that require high thickness.

Extrusion method

Extrusion method

What makes Cupronickel Pipes have Antimicrobial Properties?

The antimicrobial property is due to the present of coper in cupronickel pipes.

Copper either kills or inactivates these microbes.

This is according to studies present in SAGE Journal and American Society for Microbiology.

Which Technique can you use to Produce Welded Cupronickel Pipes?

Two techniques are critical in the production of welded cupronickel pipes:

i. Formation of the Pipe’s Circular Part

You need to use a rolling machine to form the circular part of your cupronickel pipe.

The next step involves the use of a top roller to transform copper-nickel strip to a circular section.

You can also use the UO technique to form the circular section. Here you start by forming a “U” shape then an “O” cross-section.

The continuous method is also common in the formation of circular section.

This process involves a set of rollers that continuously shape the copper-nickel strip into a circular cross-section.

ii. Formation of Copper-nickel Pipes through Welding of the Circular Section

This process involves welding of the circular section forms a copper-nickel pipe.

The main welding methods available include electric fusion welding, electric resistance welding and high-frequency welding.

Also, the final product goes through different finishing methods before packaging.

Which Are The Quality Certificates That you need for Cupronickel Pipes?

The primary quality certificates for cupronickel pipes are:

  • ASTM standards
  • EN standards
  • ISO standards

How long will Cupronickel Pipe Last?

Cupronickel pipes can last for over ten years due to their various features.

These features make them ideal for harsh environment for a long time.

Now it’s your turn:

If you have questions or you’re looking for high quality cupronickel pipes, contact us today.

Let’s Shihang Skyrocket Your Business

You can also send the inquiry to email: directly.

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