Ninthore Overseas is one of the Leading Manufacturer And Exporter Of High Quality Cupro Nickel 90 Buttweld Fittings. In addition, these Cu-Ni 90 / 10 Elbow Butt Weld Pipe Fittings (UNS C70600) offers excellent corrosion resistance, especially in marine salt water environments. Cupro Nickel 90 / 10 Tee Butt Weld Pipe Fittings are often used in pumps, valves, sheathing and fittings for ship hulls. Copper Nickel 90 / 10 Reducer is a 90 % copper, 10 % nickel alloy that also contains small but important additions of iron and manganese to enhance overall strength corrosion resistance.

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Cupro Nickel 90 Buttweld Fittings

Cupro Nickel 90 Buttweld Fittings

Meanwhile, Cu-Ni 90 / 10 Cross Butt Weld Pipe Fittings are also being offered in different sizes and shapes to our customers. We offer the full spectrum of product types in Cupro Nickel 90 / 10 Elbow Pipe Fittings in both Metric and EMMUA size ranges catering for all applications.

Copper Nickel 90 / 10 Stub End is uniquely qualified as an ideal candidate for piping systems in the ship – building industry due to its alloy properties, including low general corrosion rates in seawater, resistance to stress corrosion cracking due to ammonia in seawater, high resistance to crevice corrosion and stress corrosion due to chlorides, good pitting resistance, ready weldability, ease of fabrication and inherent resistance to biofouling.

Cupro Nickel 90/10 Pipe Fittings Specifications
Specifications : ASTM B366 / ASME SB366
Size : 1/2″ to 24″ NB to 24″NB in
: ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Thickness : 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS available with NACE MR 01-75
Type : Seamless / Welded / Fabricated
Cupro Nickel 90/10 Pipe Fittings Chemical Composition
Cu-Ni 90/10 Cu Pb Mn Fe Zn Ni
88.6 min 0.05 max 1.0 max 1.8 max 1 max 9-11 max
Cupro Nickel 90/10 Buttweld Fittings Mechanical Properties
Density Melting Point Yield Strength (0.2%Offset) Tensile Strength Elongation
8.1 g/cm3 1443 °C (2430 °F) Psi – 35,000, MPa – 241 Psi -80,000, MPa -551 30 %
Equivalent Grades for 90/10 Cupro Nickel Pipe Fitting
Cupro Nickel 90/10 C70600 2.0872
Copper Nickel Alloy 90/10 Buttweld Pipe Fittings Application Industries
  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals
  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers
  • Pulp and Paper Industry
Copper Nickel 90/10 Buttweld Fitting Test Certificates

We at Ninthore Overseas provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report. We also provide Standard certificates like EN 10204 3.1 and additional requirement like. NACE MR 01075. FERRIT CONTENT as per norms if requested by clients.

• EN 10204/3.1B,
• Raw Materials Certificate
• 100% Radiography Test Report
• Third Party Inspection Report, etc

Material Testing

We at Ninthore Overseas ensure that all our materials go through strict quality tests before dispatching them to our clients.

• Mechanical Testing Such as Tensile of Area
• Hardness Test
• Chemical Analysis – Spectro Analysis
• Positive Material Identification – PMI Testing
• Flattening Test
• Micro and Macro Test
• Pitting Resistance Test
• Flaring Test
• Intergranular Corrosion (IGC) Test


• Commercial Invoice which includes HS Code
• Packing List including net weight and gross weight, number of boxes, Marks and Numbers
• Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
• Fumigation Certificates
• Raw Material Test Reports
• Material Traceability Records
• Quality Assurance Plan (QAP)
• Heat Treatment Charts
• Test Certificates certifying NACE MR0103, NACE MR0175
• Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
• Guarantee Letter
• NABL approved Laboratory Test Reports
• Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
• Form A for the purposes of the Generalized System of Preferences (GSP)



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