317L Round Bar

Cu Ni Ferrule Inserts


Copper Nickel Pipe Fittings Manufacturers, Suppliers, Cupro Nickel Fittings, Flanges Manufacturers 

Copper Nickel Alloy Uns C70600, C71500, Cupro Nickel 90/10, Cupro Nickel 70/30

Detailed Information:

We are one of the leading manufacturers of copper-nickel ferrule inserts, also called Copper Nickel C70600 and C71500 (70/30), at Ratnaexports. We simultaneously manufacture “Curp Nickel Ferrule Inserts(Cu-Ni Inserts).” As the name implies, tube inserts and tube ferrules are metal inserts inserted into the tube end of the shell and tube heat exchanger tube to protect the mouth ends of the tube. In shell and tube heat exchangers, tube inserts protect the tubes from corrosion. 

As most tube failures occur within the first couple of inches of the heat exchanger tube inlet-end, the need for this Tube Ferrule arises. Condensers and heat exchangers must have thin wall coverings that can be extended fully into the inlet end to solve this problem. A Ratnaexports.com tube insert is a tube insert that ensures an easy, smooth transition between the fluid passing through it and the condenser or heat exchanger tube from the tube insert. We offer two types of tube inserts: metal and plastic/Delrin tube inserts. 

Ratna Exports provides excellent service to our clients. Using premium raw materials, advanced machines, tools, and technologies, we manufacture the best quality Cupro Nickel 90/10 Ferrule Inserts that are highly durable. The Cupro Nickel 90/10 Compression Tube Inserts are designed and developed following national standards. Professional experts conduct quality tests.

The company knows how important packaging is, so it uses the best quality material to package Cupro Nickel 90/10 Compression Tube Fittings for transportation. The company uses the best packing materials to prevent transportation harm to packing Cupro Nickel 90/10 Compression Tube Fittings. By partnering with logistic partners and using the fastest shipping method, RatnaExports.com assures valuable clients that the fittings are delivered in a damaged condition to their valuable clients without any delays.

There is a wide variety of Cupro Nickel 90 / 10 Ferrule Inserts, and we can provide them in all sizes, shapes, thicknesses of walls and to meet customer requirements. We can also customize the Fittings according to the customer’s requirements.

Cu Ni Ferrule Inserts Specification

Size 1/16” 1/2” & 1.5MM to 38.1MM
Pressure Rating 3000psi -10000psi
Temperature Ratings Up to 1000°F (537°C)
Types Tube to Union, Tube to Male, Tube to Female, Instrument Pipe Fittings, Accessories


Chemical Composition

The chemical composition of Cu Ni Ferrule Inserts


Content (%)

Nickel. Ni

53.34 – 67.5

Copper, Cu

≤ 0.50

Chromium, Cr

27 – 31

Iron, Fe

2.5 – 6

Aluminum, Al


Titanium, Ti

≤ 1

Manganese, Mn

≤ 1

Niobium, Nb

0.50 – 2.5

Silicon, Si

≤ 0.50

Carbon, C

≤ 0.15

Sulfur, S

≤ 0.010

Mechanical Properties

The following table shows the mechanical properties of Cu Ni Ferrule Inserts 




Tensile strength (hot-rolled and annealed plate)

882.6 MPa

128000 psi

Yield strength

489.5 MPa

71000 psi

Elastic modulus

137 GPa

19900 ksi

Elongation at break



Physical Properties

The physical properties of Cu Ni Ferrule Inserts are tabulated below.





7.77 g/cm3

0.281 lb/in3

Melting point

1317 – 1367 °C

2403 – 2493 °F


Equivalent Grades For Cu Ni Ferrule Inserts




Copper Nickel 90/10




The Purpose Of The Tube Ferrule Inserts

1) Protect inlet-end erosion & corrosion

2) Act as a protective layer

3) Reduce the medium impact

4) Transfer extremely high heat past the tube sheet to the exchanger tubes.

Types Of Tube Insert/Ferrules-Choose From Our Standard Design Modules. If You Do Not Have a Drawing

Straight Tube Ferrule Insert

These are the primary form of Tube Ferrules. Very economical and serves the primary purpose of Tube Mouth Protection. Ideal when there is not enough space at Tube Mouth for Ferrule Flares.

Bar Stock Ferrule Insert

These are machined from Solid Round Bars. Useful for small sizes and precision. Commonly used in metal when Pipes are not available for Construction.

Standard Flare Ferrule Insert

Flaring serves the purpose of holding the Ferrule Inserts with Tubes. With Single Flare on the outer side, this is the most commonly used and widely accepted Ferrule Inserts. Also does not necessarily require the use of Ceramic Fiber Paper.

Single Flare With Back Cut Tube Insert

A variation in the above design has a degree at the tail. Helps in a more straightforward installation where there may be hindrance/aberration in the tubes.

Single Flare Long Tube Insert

With Extra Length after Flaring, this Tube Insert is functional when used with Ceramic Fiber Paper. Sometimes these are hammered inside the Tube for proper fit.

Double Flare Stepped Tube Insert

With Double Flaring, this Tube Insert is functional with Ceramic Fiber Paper.

Double End Flare Tube Insert

It has Flaring at both Start and End. A degree may defer at both ends to ensure correct installation.

Who Uses Tube Inserts?

Any production process that requires the use of heat exchangers will benefit from the use of tube inserts. Tube inserts improve the tube side performance of heat exchangers by modifying the flow stream characteristics to enhance heat transfer. If you use heat exchangers, tube inserts will improve efficiency and increase tube life, both of which will produce substantial production and cost benefits.

Why Use Tube Inserts?

The following problems are common in shell & tube type exchangers:

  • Tube-end erosion/corrosion
  • Stress corrosion cracking
  • Crevice corrosion
  • Localized pitting
  • Ammonia grooving
  • Improper tube expansion
  • Weakened tube-to-tube sheet joints


  • Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
  • Commercial Invoice, including HS Code
  • Packing List including the number of boxes, net weight, gross weight, Marks, and Numbers
  • Fumigation Certificates
  • Letter of guarantee
  • Material Test Certificates as per EN 10204 3.1, EN 10204 3.2
  • Test Certificates certifying NACE MR0103, NACE MR0175
  • Raw Material Test Reports
  • Heat Treatment Charts
  • Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
  • Quality Assurance Plan (QAP)
  • NABL-approved Laboratory Te

Testings (Destructive, Non Destructive):

  • Positive Material Identification – PMI Testing
  • Chemical Analysis – Spectro Analysis
  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Micro Test
  • Macro Test
  • Hardness Test
  • Pitting Resistance Test
  • Intergranular Corrosion (IGC) Test
  • Flaring Test
  • Flattening Test
  • Hydrostatic Test
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
  • Radiography Test
  • Dye Penetrant Test (DP Test)
  • Ultra Sonic Test (UT)
  • Eddy Current Testing
  • Impact Test
  • Bend Test


We understand the importance of packaging, especially in the case of international shipments, as the consignment has to go through several channels to reach the final destination. Thus we take proper care of packing.

We pack our goods in various ways depending on the products. The different ways in which our products are packed are:


Wooden Boxes

Wooden Pallets

Wooden Crates

Carton boxes


All our products will have complete marking details for our supply test certificates.

The marking is transferred from the product from which it is cut to cut pieces of Pipes, Sheets, or Round Bars. In such cases, we provide a Letter confirming the marking transfer and a picture of the product from which it is cut.

Cu Ni Ferrule Inserts Application

We can use plugs in some high-temperature/pressure heat exchangers for permanent plugging of condenser tubes and for plugging holes in the tubes of tube sheets. Before heat exchange, tubes with leaks can be plugged into tube plugs.

Countries We Export:

Afghanistan, Albania, Algeria, Andorra, Angola, Antigua-Barbuda Argentina, Armenia, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia-Herzegovina, Botswana, Brazil, Brunei, Bulgaria, Burkina-Faso, Burundi, Côte d’Ivoire, Cabo Verde, Cambodia, Cameroon, Canada, Central African Republic, Chad, Chile, China, Colombia, Comoros, Congo (Congo-Brazzaville), Costa-Rica, Croatia, Cuba, Cyprus, Czechia (Czech Republic), Democratic Republic of the Congo, Denmark, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Estonia, Eswatini (fmr. “Swaziland”), Ethiopia, Fiji, Finland, France, Gabon, Gambia, Georgia, Germany, Ghana, Greece, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Holy See, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Kiribati, Kuwait, Kyrgyzstan, Laos, Latvia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Mexico, Micronesia, Moldova, Monaco, Mongolia, Montenegro, Morocco, Mozambique, Myanmar (formerly Burma), Namibia, Nauru, Nepal, Netherlands, New Zealand, Nicaragua, North Korea, North Macedonia, Norway, Oman, Pakistan, Palau, Palestine-State, Panama, Papua, New Guinea, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Romania, Russia, Rwanda, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Samoa, San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, South Africa, South Korea, South Sudan, Spain, Sri Lanka, Sudan, Suriname, Sweden, Switzerland, Syria, Tajikistan, Tanzania, Thailand, Timor-Leste, Togo, Tonga, Trinidad and Tobago, Tunisia, Turkey, Turkmenistan, Tuvalu, Uganda, Ukraine, United Arab Emirates, United Kingdom, United States of America, Uruguay, Uzbekistan, Vanuatu, Venezuela, Vietnam, Yemen, Zambia, Zimbabwe.

Cities We Supply:

London, New-York, Paris, Moscow, Tokyo, Dubai, Singapore, Barcelona, Los-Angeles, Madrid Rome, Chicago, Toronto, San-Francisco, Abu-Dhabi, St-Petersburg, Amsterdam, Berlin Prague, Washington,Istanbul, Las-Vegas, Doha, Seoul, Sydney, Beijing,  Miami, Munich, Milan, San-Diego, Bangkok, Vienna, Dublin, Vancouver, Boston,  Zurich,  Melbourne, Budapest, Houston, Seattle, Montreal, Hong-Kong, Frankfurt, Sao-Paulo, Tel-Aviv, Copenhagen, Calgary, Orlando, Atlanta, Dallas, Hamburg, Osaka, Lisbon, Austin, Phoenix Naples, Oslo, Denver, Stockholm, Riyadh, Delhi, Buenos Aires, San-Jose, Brussels, Portland Philadelphia, Ottawa, Helsinki, Valencia, Brisbane, Warsaw, Minneapolis, Shanghai, Lyon, Adelaide, Edmonton, Marseille, Muscat, Athens, Stuttgart, Rio-De-Janeii, Baltimore, Auckland, Cologne, New-Orlean, Kuwait-City,  Kiev, Hanover, Perth, Minsk, Bucharest, Nashville, Dusseldorf, Manchester, Sacramento, Glasgow, Mexico-City, Salt-Lake-Ci, Raleigh, Cracow