METLINE Industries is a leading manufacturer of copper pipe fittings such as “Curpo Nickel Fittings (Cu-Ni Fittings)” also known as Copper Nickel C70600 (90/10) and C71500 (70/30) fittings in Mumbai, India. METLINE offers a complete range of copper pipe fittings such as Cupro Nickel reducer, Cupro Nickel elbow, Cupro Nickel tee, Cupro Nickel cross, Cupro Nickel stub ends and Cupro Nickel pipe bends.

We are a single source manufacturer and supplier for all your requirements of Copper Nickel pipes, Copper Nickel buttweld fittings, Copper Nickel forged fittings, Copper Nickel olet fittings (sockolet, weldolet) and Copper Nickel forged flanges in all major US and European standards including ASTM B122, ASTM B171, ASTM B151, ASTM B466, ASTM B467, ANSI B16.5 (Flanges), ASME B16.9 (Buttweld Fittings), ASME B16.11 (Forged Fittings), EEMUA 146 (Buttweld Fittings), EEMUA 145 (Flanges), DIN 86090, DIN 86089, DIN 86088 and DIN 86087.

Copper nickel is known for its strong general resistance to seawater. Due to high alloy concentration copper nickel fittings are widely used as connectors for piping systems in the ship building and power generation industry. METLINE is a leading exporter and supplier of copper nickel fittings (CUNI fittings) in Saudi Arabia, Qatar, Kuwait and other countries in the GCC region.

We also stocks and supplies a complete range of copper pipes to complement our existing production range of buttweld fittings and flanges. Copper pipes can be supplied in cut to length sizes and also machined or fabricated to meet your piping requirements.

CUNI 90/10, 70/30 Copper Nickel Pipes Manufacturer, Exporter, Supplier

CUNI 90/10, 70/30 Copper Nickel Pipes Manufacturer, Exporter, Supplier

CUNI 90/10, 70/30 Copper Nickel Flanges Manufacturer, Supplier, Exporter

CUNI 90/10, 70/30 Copper Nickel Flanges, Buttweld Fittings, Forged Fittings Manufacturer, Supplier, Exporter

Key Properties of Cupronickel Fitting Products

  • Low corrosion in seawater/salt water applications
  • High resistance to stress corrosion cracking (SCC) in seawater
  • High general resistance to crevice corrosion and stress corrosion due to chlorides
  • Strong pitting resistance
  • Ease of welding and fabrication

Applications – Copper Nickel Fittings

  • Shipbuilding – Special Marine Vessels
  • Offshore – Various Navy projects
  • Desalination Plants
  • Condensers
  • Power Plants
  • Desalination plants
  • Oil refineries
  • Chemical process industries

Copper Pipe Fittings/Cupro Nickel Pipe Fittings Production Range

Specification ASTM B122, B171, B466, B467
Grade Copper Nickel Alloy UNS C70600, UNS C71500, Cupro Nickel (Cu-Ni) 90/10, Cupro Nickel (Cu-Ni) 70/30.
Type Seamless / Welded / Fabricated
Bending Radius R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Range ½”NB to 24”NB in Sch 10s, 40s, 80s, 160s, XXS.
Dimensions ANSI/ASME B16.9, B16.28, MSS-SP-43.

Buttweld Cupro Nickel Fittings / Copper Pipe Fittings

Seamless/ Welded 100% Radiography Tested

Products Size
Copper Nickel Elbows – Long Radius Copper Nickel Stub Ends

Sizes 1/2″ – 24″

Copper Nickel Elbows – Short Radius Copper Nickel Crosses
Copper Nickel Reducing Elbows Copper Nickel Reducing Crosses
Copper Nickel 45° Elbows Copper Nickel 180° LR Return Bends
Copper Nickel Tees Copper Nickel 180° SR Return Bends
Cupro Nickel Reducing Tees Copper Nickel Pipe Bends / Piggable Bends
Cupro Nickel Reducers Copper Nickel Couplings
Cupro Nickel Concentric Reducers Copper/Cupro Nickel Pipe Nipples
Copper Nickel Eccentric Reducers Copper Nickel Forged/Plate Cut Rings
Copper Nickel 3D Elbow Copper Nickel End Caps
Copper Nickel 5D Elbow Copper Nickel Forged / Plate Circles

High Pressure Forged Cupro Nickel Fittings / Copper Nickel Pipe Fittings

Threaded and Socket Weld Fittings

Products Size
Copper Nickel 90° Elbows Cupro Nickel Couplings

Sizes 1/8″ – 4″

Pressure Ratings –
2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS

Copper Nickel 45° Elbows Cupro Nickel Reducers
Copper Nickel Street Elbows Cupro Nickel Inserts
Copper Nickel Tees Cupro Nickel Caps
Copper Nickel Crosses Cupro Nickel Unions

Cupro Nickel Flanges / Copper Nickel Flanges

Forged and Plate Flanges

Specification ASTM / ASME SB 61 / 62 / 151 / 152
Grade UNS No. C70600 ( Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), C 71640
Standard ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size ½” to 36″
Dimensions ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.


Product Size
Copper Nickel Slip-On Flanges Copper Nickel Threaded Flanges

1/2″ – 36″

Raised Face or Flat Face

Copper Nickel Weld Neck Flanges Copper Nickel Socket Weld Flanges
Copper Nickel Blind Flanges Copper Nickel Reducing Flanges
Copper Nickel Lap Joint Flanges Copper Nickel Plate Flanges

Marking & Packing

Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All fittings and flanges are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.

Quality Assurance

At METLINE, all fittings and flanges are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products.

Test Certificates: Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report