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Manufacturer and exporter of CuNi 70/30 Blind Flange and 70/30 Copper Nickel Flanges Size Chart, UNS C71500 Industrial Flanges Dimensions, Copper Alloy 70/30 Plate Flange At Low Prices In India

Cupro Nickel 70/30 Flange Specification


Specification: ASTM B151 / ASME SB151

Size: 1/2" (15 NB) to 48" (1200NB) DN10~DN5000

JIS: 5K, 10K, 16K, 20K, 30K, 40K, 63K

Dimension Standard: ANSI, ASME, BS, DIN, EN etc.

Type: Ring Joint Flange (RTJ), Flat Face Flange (FF),

Raised Face Flange (RF), Male and Female Flange (M & F),

Lap Joint Flange, Large and Small Tongue-and-Groove Flange (T & G)

Pressure rating: 150#, 300#, 600#, 900#, 1500#, 2500#,

PN6, PN10, PN16, PN25, PN40, PN64 etc.


Cupro Nickel 70/30 flanges are essential components used in various industrial applications requiring excellent corrosion resistance, high strength, and good thermal stability. These flanges are made from a specific alloy known as Cupro Nickel 70/30, composed of 70% copper and 30% nickel, with trace amounts of other elements.


Cupro Nickel 70/30 is well-known for being highly resistant to corrosion. It can handle saltwater and brackish water, making it great for use in marine conditions. It also prevents the build-up of organisms and marine growth on surfaces, extending its usability in aquatic systems.

Cupro Nickel 70/30 has strength, making it excellent for situations that demand high durability and structural dependability. It possesses impressive mechanical properties - featuring a great combination of strength and flexibility - that let it handle extreme pressure and temperature. This makes it ideal for flanges utilised in pipelines, heat exchangers, and other important systems.


The strength of Cupro Nickel 70/30 makes it suitable for jobs that need tougher and more sound resistance. Its mechanical qualities are distinguished by an amazing combination of tensile resilience and malleability, permitting it to endure intensely high pressure and temperature. This makes it ideal for flanges employed in pipelines, heat exchangers and other key structures.


Cupro Nickel 70/30 Flanges Specifications


Spec Chart Of : Copper Nickel 70/30 Flanges
Demanded Type Of Flanges Threaded / Plate/ Forged
Largest Bore Diameter Sizes NPS ≤ 10
Minimum & Maximum Size 1/2" To 48"
Common Production Technique
  • Machined / Heat Treated / Forged
Manufacturer Of Different Steel Materials Alloy Steel, Stainless Steel, Cast Iron, Inconel, Mild Steel, Hastelloy, Copper Nickel, Carbon Steel, Wrought Iron, Duplex Steel & Super Duplex Steel.
Thickness Formula NPS ≤ 18
PDO Approved Manufacturer Of Flange Standards ASME B16.48, API605, BS4504, EN1092, UNI, ASME B16.36, DIN, AWWA C207, B16.47 Series A & B, BS1560-3.1, EN-1092, ISO, MSS S44, ANSI/ASME B16.5, API7S-15, IS 2062, ISO70051, API, API7S-43
Pressure Rating Class 150# To 2500 #
Common Face Type Of Flanges RTJ, Flat Face, Lap-Joint Face, Raised Face, Large Tongue & Groove And Small Tongue Groove, Large Male-Female And Small Male-Female.
Rajendra Piping & Fittings Manufacturer Of Socket-Weld, Weld Neck, Lap Joint, Blind, Threaded, Slip-On
Application For Pipe Connection Waterworks Systems
Nuclear Power Application
Municipal Pipe Systems
Fossil Fuel Power Plants
Oil And Gas Industry
Power Plants Industry
Food Processing And Manufacturing
High Deg Celsius Temperature Above 200° Celsius (400°F) For 150 Class Or Above 400° Celsius (750°F)
Low Deg Celsius Temperature Above -29 ° Celsius (−20°F)
JIS Standards 5K, 10K, 40K, 16K 20K 30K, 63K

Cupro Nickel 90/10 Flanges Equivalent

STANDARD WERKSTOFF NR. UNS
90/10 Copper Nickel Flanges 2.0872 C70600

Furthermore, Cupro Nickel 70/30 flanges have excellent resistance to biofouling and microbiologically influenced corrosion (MIC). Biofouling refers to the accumulation of bacteria, algae, and other microorganisms on surfaces, which can degrade equipment performance and increase maintenance requirements. Cupro Nickel 70/30's inherent resistance to biofouling helps prevent the formation of these organisms, reducing the risk of clogging or blockages in systems such as seawater cooling systems or offshore structures.

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