Cupro Nickel Blind Flange and Cuni Flange manufacturer in Mumbai

A copper nickel or cupro-nickel flange is a marine-grade item that has moderate strength and good thermal stability. The Cupro Nickel Flanges are utilized to connect pipes, tubes, and other equipment in the industry. These flanges are available commercially in 70/30 and 90/10 specifications. A Cuni Flange has excellent resistance to corrosion and pitting by acids in harsh environments. The flanges have good stability at oxidative levels and are tolerant against stress corrosion cracking. The Copper Nickel Pipe Flanges possess good fabricability and provide support to piping equipment as pressurized fluid and gases are passed through the line. These flanges showcase a density of 8.94 g/cm3 and possess outstanding mechanical properties. We are a Copper Nickel Flange manufacturer who uses the best raw materials and technology to produce quality-assured products.
Copper nickel flanges are designed in different configurations. A Copper Nickel Slip On Flange is very sought after in the industry as it is easy to install and is very cost-effective. These flanges are recommended in low-pressure and temperature applications. The Cuni Weld Neck Flange is recognized by a long hub that is seen in pressurized applications. These flanges are preferred in systems where repeated bending is taking place. Copper Nickel Backing Rings are used inside the butt-weld joint to prevent any metal from entering and contaminating the pipe. A Copper Nickel Blind Flange doesn’t possess a boring center. This allows the flanges to act as blanks to terminate the flow of media. Copper Nickel Threaded Flange doesn’t require any welding process to fit the pipe as it has threads that can be wound to subsequent grades. The Copper Nickel Composite Flange is designed with an inner copper flange and a carbon outer flange. These flanges are used in shipbuilding due to their versatile properties. Our institution is a Copper Nickel Flange supplier that has contact with different logistical supply chains, allowing us to transport products to you within a short time.
Manufacturer of Cupro Nickel Flanges as per EN, UNI, NORSOK, ASME, BS, AWWA, API, check Cuni Composite Flange dimensions

Copper Nickel Flange

Copper Nickel Slip On Flange

Copper Nickel Weld Neck Flange
PED approved Copper Nickel Flange supplier in Asia, best material of USA & Europe, ensured quality & Seaworthy Packing
Sunflex Metal is a manufacturer and supplier of Copper Nickel Flange in India supply in grade of UNS C71500 & C70600. The Elongation at Break of Copper Nickel Flanges (rolled-H04 for flat products/hard drawn-H80 for tubing), is 11.00% and its Elongation at Break (annealed), is 40%. Cupro Nickel Flanges has a Thermal Conductivity of 32.9 W/mK (0.0900 BTU in/hr.ft². °F) and it has a Rockwell B Hardness of 69. Cu-Ni Blind Flanges specifications detail the exact specifications of various kinds of Cuni Flanges products, for use in different types of applications. Copper Nickel Slip on Flanges has excellent hot and cold workability. ANSI B16.5 Cupro Nickel Orifice Flange can be obtained in various thickness and dimensions, as per the need.
Such types of Copper Nickel Pipe Flanges are used a lot in seawater piping systems, crankshafts, tubes for light-duty condensers, sea water pipe-work desalination units and in offshore platforms. Cupro Nickel Nippo Flanges has an Elastic Modulus (C71500 annealed) of 22000 ksi (152 GPa). The Yield Strength (annealed) of Cu-Ni WNRF Flanges is 15000 psi (103 MPa). ASME SA151 Copper Nickel Threaded Flange has a Density of 0.323 lb/in³ (8.94 g/cm3). The Poisson’s Ratio of Copper Nickel Screwed Flanges (C71500 annealed) is 0.325. These Copper Nickel Blind Flange pressure rating is very important as it determines what kind of Cu-Ni Industrial Flanges can be used, for which purpose, in which industry. Copper Nickel Grade Forged Flanges is solderable, it shows scaling resistance and very good corrosion. ANSI B16.5 Cuni Ring Type Joint Flanges exhibits superb resistance to corrosion (seawater especially), cavitation and erosion. Good weldability is displayed by Cu-Ni RTJ Flange. ASTM A151 Cu-Ni Threaded Flanges are durable and best of all, they are inexpensive. They are used in process equipment, hydraulic lines, automobile parts, underwater fencing, marine hardware components, feed water heaters, pump components, heating cables and in air conditioning plants.
Table of content
- » Cupro Nickel Flange Specifications
- » Cunifer Flanges Price List
- » Types of Copper Nickel Flange
- » Pressure Classes of Copper Nickel Alloy Flanges
- » ASME B16.48 Cuni figure 8 blank dimensions
- » Cupronickel Weld Neck Flanges Dimensions
- » Cu-Ni Composite Slip-On Flanges Dimensions
- » Most important tests for Copper Nickel Flange should perform by manufacturers
- » Application of Copper Nickel Pipe Fittings
- » Temperature and working pressure of Cupro Nickel Flange
Cupro Nickel Flange Specifications
Manufacturer & supplier of Copper Nickel Slip On Flange and Cuni Threaded Flange in India, Competitive Price and easy to install

Standard Specification | ANSI-B16.5, DIN-86037, BS-1560, MSS-SP-44, B16.47A/B, EEMUA-145, ASTM / ASME SB 61 / 62 / 151 / 152, EN1092-1, BS 10 TABLE FLANGES, AWWA, BS4504, BS3293, JIS, DIN |
Manufacturing type | Copper Nickel Flange (Composite and Solid) |
Pressure Rating |
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Manufacturing size range of Copper Nickel Flange | 1/2" up to 36" |
Thickness | 5s to XXS |
Material Test Certificates (MTC) | All Copper Nickel Flange material supplied with MTC EN 10204 3.1, 3.2 |
Flange Type | Ring, Disk, Plate, Weld-Neck, Slip-On, Socket-Weld, Lap-Joint, Orifice, Reducing, Blind, Loose, Thread etc. |
Flange Face: | TG, M, F, FF, RTJ, MF, G, T, RF |
Flange Size: | DN10—DN2000, or Customized as per customer Drawing |
Flange Pressure: | 150 - 20000 LBS, PN6 - PN400 |
Material | NAVINIC 10® CuNi10Fe1Mn NAVINIC 30® CuNi30Fe1Mn |
US STANDARDS |
ANSI NAVSEA 810 - 4715319 Slip On Flange 1A Socket Weld Flange 2A Socket Weld Flange 2C (Butterfly) Slip On Flange 5A Socket Weld Flange 5B Socket Weld Flange 5C Socket Weld Flange 9C |
Cupro Nickel Composite Flanges | INNER FLANGES Material : Dimension : OUTER FLANGES Material : Dimension : |
Copper Nickel Flanges Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
Size | 1/2" 36" |
Class / Pressure | 2500#, 1500#, PN25, 600#, 150#, PN6, 300#, PN64, PN10, 900#, PN40, PN16 etc. |
Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
Grades | Copper Nickel 90/10 Flanges (C70600 ), Cupro Nickel 70/30 Flanges (C71500), UNS C71640 |
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Cunifer Flanges Price List
British and European standard Copper Nickel Pipe Flanges manufacturer in India, view Cuni Weld Neck Flange price list in Mumbai
Manufacturing Type | Manufacturing Size | Price List in India |
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Copper Nickel Blind Flange | 6 DIA X 7/8 THK | FOB Price: US $ 150 - US $ 180 per pcs |
CuNi reducing Flange, NPT(F) | 4`X 1/2` | FOB Price: US $ 250 - US $ 265 per pcs |
JIS B2220 5K Copper Nickel Socket Weld Flange | 24" | FOB Price: US $ 2200 - US $ 2300 per pcs |
Copper Nickel Weld Neck Innner Flange | DIN 86037, CN 102 | FOB Price: US $ 40 - US $ 46 Per kg |
Cupro Nickel Weld Neck Innner Flange | 38MM OD, 1-1/4 | FOB Price: US $ 60 - US $ 62 Per kg |
WNFF Copper Nickel Flange | DN40 * SCH40 * CL 150# | FOB Price: US $ 25 - US $ 31 Per kg |
Copper Nickel WNRF Flange | DN50 * SCH40 * CL 150# | FOB Price: US $ 25 - US $ 28 Per kg |
WNRF, Cupro Nickel Flange | DN80 * SCH40 * CL 150# | FOB Price: US $ 20 - US $ 26 Per kg |
Types of Copper Nickel Flange

Copper Nickel Composite Slip On Flanges

Cupro Nickel Weld Neck Flanges

Cunifer Socket Weld Flange

Copper Nickel Alloy Slip On Flange

Cuni Inner Flange

Cupronickel SORF Flange

Cu-Ni WNRF Flange

Copper Nickel Plate Flange

Cupro Nickel Blind Flange

Cunifer Square Flange

Class 150 Copper Nickel Flange

Cupro Nickel Solid Flange
Pressure Classes of Copper Nickel Alloy Flanges

Class 150 Copper Nickel Flange
Bolt Holes : 12 x 25.4mm

Class 300 Cupro Nickel Flange
Bolt Holes : 16 x 28.6mm

Class 400 Cunifer Flange
Bolt Holes : 16 x 34.9mm

Class 600 Copper Nickel Alloy Flange
Bolt Holes : 20 x 34.9mm

Class 900 Cuni Flange
Bolt Holes : 20 x 38.1mm

Class 1500 Cupronickel Flange
Bolt Holes : 16 x 54mm

Class 2500 Cu-Ni Flange
Bolt Holes : 12 x 73mm
Solid Copper Nickel Flanges, Classes 150, 250, & 300
- ANSI B16.5 NAVSEA Copper Nickel Flanges
- ANSI B16.5 Weld Neck Copper Nickel Flanges
- ANSI B16.5 Slip-On Copper Nickel Flanges
- ANSI B16.5 Socket Welding
- ANSI B16.5 Blind Copper Nickel Flanges
- ANSI B16.5 Overlay Copper Nickel Flanges
- ANSI B16.5 Composite
- ANSI B16.5 Clad
- Socket Weld Commercial Flange, Class 300 Copper Nickel Flanges
- Socket Weld Navy Flange, 150, 250 Pound Class Copper Nickel Flanges
Solid Forged Copper Nickel Flanges, Classes 150, 200, 300 and 400.
Composite, Clad Flanges | Cu-Ni Forged Flange (Weld Neck, Slip-On, Socket Weld) | Blind, Special Flanges, Overlay, |
Blind ANSI B16.5 (Dimensions to your sketch) |
Slip-On ANSI B16.5 AWWA Large Diameter |
Weld Neck NAVSEA 810-1385992 MIL-F-20670 |
Cu-Ni Threaded Flanges | A151 Copper Nickel Orifice Flanges | Copper Nickel Socket weld Flanges |
Silver-Brazing NAVSEA 810-1385947 MIL-F-20042 Face Fed or Grooved for Ring |
Socket Weld ANSI B16.5 NAVSEA 810-4715319-Butterfly Type (2c) MIL-F-20042 |
Threaded ANSI B16.5 ANSI B16.24 |
Cupro Nickel Reducing Flanges | Cupro Nickel Long weld Neck Flanges | BS4504 Copper Nickel RTJ Flanges |
Special Order, Spectacle Blind | Commercial 150 PSI, 300 PSI | Navy 150 PSI, 250 PSI |
Cu-Ni Blind Flanges | Cupro Nickel Slip On Flanges | Cu-Ni Raised Face Weld Neck Flanges |
Copper Nickel Flanges manufacturer in India offer best price of

Copper Nickel Slip On Flanges

Copper Nickel Socket Weld Flanges

Cuni Socket Weld Flange ( Butterfly)

Cupro Nickel Socket Weld Flange (Fig 5B)

Copper Nickel Composite Flanges

Copper Nickel Clad Flanges

Cuni Overlay Flanges

Cupro Nickel Thread Flange
ASME B16.48 Cuni figure 8 blank dimensions

Cupronickel Weld Neck Flanges Dimensions

Cu-Ni Composite Slip-On Flanges Dimensions

Cupro Nickel Flanges Standards
NAVINIC 10® CuNi10Fe1Mn |
NAVINIC 30® CuNi30Mn1Fe |
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DIMENSIONAL STANDARD | DIN2527 / DIN2576 / DIN2632 / DIN2633 / DIN2635 / DIN2642 / DIN86033 / DIN86036 / DIN 86037 / DIN86067 / DIN86069 / DIN86148 EEMUA145 STF 330421 / C610 STF330430 / C513 BS4504 VG85536 VG85387 |
DIN2633 NES 780 / DEF STAN 02-780 STF 330421 / C608 |
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EUROPE | MATERIAL STANDARD |
2.0872 / 2.1972 UNS7060X CW352H CN102 NES779 / DEF STAN 02-779 |
2.0882 CW354H CN107 |
DELIVERY CONDITION |
.10 / .11 / O / O60 / M | .10 / O / O60 / M / R370 | |
DIMENSIONAL STANDARD | ANSI B16.1 / ANSI B16.5 / ANSI B16.9 / ANSI B16.36 / ANSI B16.47 / ANSI B16.48 810-4715319 DF314115 / 252943 |
ANSI B16.5 810-4715319 DF314115 / 252943 |
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UNITED STATES |
MATERIAL STANDARD |
UNS C70600 / C70610 / C70620 ASTMB151 / MILC15726F / MILC24679SH |
UNS C71500 / C71520 ASTMB151 / MILC15726F / MILC24679SH |
DELIVERY CONDITION |
O / O60 | O / O60 |
Most important tests for Copper Nickel Flange should perform by manufacturers
Destructive Testing | Non Destructive Testing |
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Application of Copper Nickel Flange
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Temperature and working pressure of Cupro Nickel Flange
Type of Copper Nickel Flange | Size range | 16 bar rating Copper Nickel Flange | 20 bar rating Copper Nickel Flange | ||||||
38˚C | 50˚C | 75˚C | 100˚C | 38˚C | 50˚C | 75˚C | 100˚C | ||
Cupro Nickel Composite weld neck flange |
½ - 4 inch 16 to108 mm |
Use 20 bar | 20.0 | 19.7 | 18.6 | 17.3 | |||
6 - 36 inch 159 - 914mm |
16.0 | 16.0 | 16.0 | 15.7 | 20.0 | 19.7 | 18.6 | 17.3 | |
Copper Nickel Alloy Composite Slip On Flange | ½ - 4 inch 16 - 108 mm |
Use 20 bar | 20.0 | 19.7 | 18.6 | 17.3 | |||
Cuni Solid weld neck flange | ½ - 4 inch 16 - 108 mm |
Use 20 bar | 20.0 | 19.7 | 18.6 | 17.3 | |||
6 - 36 Inch 159 - 914 mm |
16.0 | 16.0 | 16.0 | 15.7 | 20.0 | 19.7 | 18.6 | 17.3 | |
Cupronickel Solid Slip On Flange | ½ - 4 Inch 16 - 108 mm |
Use 20 bar | 20.0 | 19.7 | 18.6 | 17.3 |