Copper Nickel Flange Manufacturer in India | CEBEX STEEL INDIA

In critical marine and offshore environments where corrosion resistance and durability are essential, copper nickel flanges provide superior performance. As a leading Copper Nickel Flange Manufacturer in India, CEBEX STEEL INDIA manufactures and exports high-quality Cu-Ni flanges engineered for long-term reliability in aggressive environments.

Copper Nickel alloys, particularly CuNi 90/10 and CuNi 70/30, are widely used in seawater systems due to their excellent resistance to corrosion, erosion, and biofouling. Our flanges are manufactured using high-grade raw materials, precision forging, and advanced CNC machining to ensure dimensional accuracy, smooth surface finish, and compliance with international standards.

Copper Nickel Flange Manufacturer in India – CuNi 90/10 70/30 ASTM B151 B466 Flanges by CEBEX STEEL INDIA

Why Choose Us as Your Copper Nickel Flange Supplier?

CEBEX STEEL INDIA delivers technically superior and globally compliant products with ISO 9001:2015 & PED approved manufacturing and full compliance with ASTM, ASME, DIN, EN standards.

Our in-house testing capabilities include PMI, UT, RT, Hydro, and Mechanical testing with 100% traceability through heat number tracking. We have strong export expertise across Africa, Middle East & Europe. Each flange is supplied with EN 10204 3.1 / 3.2 certification.

Product Overview & Technical Specifications

Our copper nickel flanges are engineered for high-performance marine and industrial applications requiring superior corrosion resistance.

Feature	Specification / Detail
Standards	ASTM B151, ASTM B466, ASTM B564, ASME SB151
Flange Standards	ASME B16.5, B16.47, EN 1092-1, DIN
Grades	C70600 (90/10), C71500 (70/30)
Size Range	½" NB to 48" NB
Pressure Ratings	Class 150, 300, 600, 900, 1500, 2500
Form	Forged / Machined
Types	WN, SO, BL, SW, Threaded, LJ
Surface Finish	Machined / Pickled / Coated
Documentation	MTC 3.1/3.2, NDT, PMI, Inspection Reports

Equivalent Grades of Copper Nickel Flanges

Copper Nickel flange grades are recognized across international standards with equivalent designations.

ASTM	UNS	EN / DIN	Common Name
C70600	C70600	CuNi10Fe1Mn	90/10 Copper Nickel
C71500	C71500	CuNi30Mn1Fe	70/30 Copper Nickel

Types of Copper Nickel Flanges We Manufacture

Our manufacturing range includes all standard flange types. Custom manufacturing is available as per drawings.

Weld Neck Flanges – High pressure applications
Slip-On Flanges – Ease of installation
Blind Flanges – Pipeline sealing
Socket Weld Flanges – Small bore systems
Threaded Flanges – Non-welded systems
Lap Joint Flanges – Stub end usage
Orifice & Spectacle Blind Flanges

Chemical Composition of Copper Nickel Flanges

Every copper nickel flange is supplied with comprehensive test certificates ensuring full compliance with project specifications.

CuNi 90/10 (C70600)

Element	% Composition
Copper (Cu)	Balance
Nickel (Ni)	9 – 11
Iron (Fe)	1 – 1.8
Manganese (Mn)	Max 1
Carbon (C)	Max 0.05

CuNi 70/30 (C71500)

Element	% Composition
Copper (Cu)	Balance
Nickel (Ni)	29 – 33
Iron (Fe)	0.4 – 1
Manganese (Mn)	Max 1
Carbon (C)	Max 0.05

Mechanical Properties

Copper Nickel flanges offer excellent ductility, strength, and corrosion resistance.

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
C70600	275 min	105 min	30
C71500	360 min	125 min	30

Dimensions, Sizes & Weight Chart

Manufactured as per ASME B16.5 / B16.47. Custom sizes available as per client requirements.

Size (NB)	OD (mm)	Thickness (mm)	Bolt Circle (mm)	No. of Bolts
½"	89	11.2	60.3	4
1"	114	13.5	79.4	4
2"	152	17.5	120.7	8
4"	229	24.3	190.5	8
8"	343	30.2	298.5	8

Applications & Industries Served

Copper Nickel flanges are extensively used across industries. Their ability to resist seawater corrosion, scaling, and biofouling makes them ideal for marine use.

Marine & Shipbuilding Industry
Offshore Oil & Gas Platforms
Desalination Plants
Condensers & Heat Exchangers
Power Generation Plants
Chemical Processing Industry

Testing & Quality Assurance

All flanges undergo PMI, Ultrasonic Testing (UT), Radiography Testing (RT), Tensile & Hardness Testing, and Hydrostatic Testing.

Complete documentation is provided with each order including EN 10204 3.1/3.2 certification and full inspection reports.

Packing, Delivery & Export Capabilities

We provide export-grade wooden box packing with anti-corrosion coating, custom marking & labeling, and global shipping support.

We export to Africa, Middle East, Europe, and Southeast Asia with on-time delivery assurance.

Exporting Copper Nickel Flanges to Africa

As a leading Copper Nickel Flange Manufacturer in India, we supply to major African countries including Nigeria, Egypt, Kenya, South Africa, and Ethiopia. Our export team ensures smooth documentation, compliance, and timely delivery for large-scale EPC and industrial projects. To learn more about our specialized solutions for the continent, visit our Africa Copper Nickel Flange Exporter page.

Related Alloy Flanges – Stainless Steel, Duplex, Super Duplex, Inconel, Hastelloy, Monel, Titanium, Alloy Steel

In addition to Copper Nickel Flanges, we also manufacture and export Stainless Steel Flanges, Duplex Flanges, Super Duplex Flanges, Inconel Flanges, Hastelloy Flanges, and Monel Flanges. These advanced alloy flanges are engineered for demanding applications requiring superior corrosion resistance, mechanical strength, and long-term reliability.

Our technical team ensures precise material selection and full compliance with international standards to meet your project requirements.

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Why Choose CEBEX STEEL INDIA?

We deliver consistent quality, competitive pricing, and reliable global supply. Our engineering expertise ensures accurate material selection, compliance with international standards, and optimal performance for every project.

Frequently Asked Questions (FAQ)

What is Copper Nickel 90/10 flange?

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It is a copper alloy containing 90% copper and 10% nickel, widely used for seawater and marine applications.

What is the difference between 90/10 and 70/30 Cu-Ni?

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70/30 offers higher strength and better corrosion resistance than 90/10, especially in high-velocity seawater.

What standards are used for Copper Nickel flanges?

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ASTM B151, ASTM B466, ASME B16.5, and DIN/EN standards.

Are Copper Nickel flanges suitable for marine use?

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Yes, they are highly resistant to seawater corrosion and biofouling.

Do you provide certification?

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Yes, EN 10204 3.1 / 3.2 certificates with full traceability.

What is delivery time?

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2–4 weeks for custom orders; stock available for standard sizes.

Copper Nickel Flanges Manufacturer in India