Supplier of Copper & Copper Nickel Alloy Butt Weld Fitting in India
Copper Nickel Buttweld Fittings, also referred to as cupronickel fittings, are composed of copper with varying nickel content and trace amounts of elements like manganese and iron. The most common grades are 90/10 (90% copper, 10% nickel) and 70/30 (70% copper, 30% nickel), offering a perfect balance of mechanical strength, corrosion resistance, and thermal stability.
These fittings are widely used in marine engineering, offshore platforms, condensers, heat exchangers, oil refineries, and more due to their excellent resistance to seawater corrosion and biofouling. The Copper Nickel Pipe Fittings are easy to fabricate and maintain high strength even at elevated temperatures, making them ideal for demanding applications.
We manufacture and supply a full range of fittings, including CUNI 90/10 Long Radius Elbows, which enable smooth directional change of flow in pipelines, and 70/30 Copper Elbows which ensure tight seals and prevent leakage. The CUNI 90/10 Tee is used to branch pipelines or merge flow efficiently, while the 90/10 End Cap protects pipeline ends from moisture and damage during transport or storage.
At Vardhman Steel Overseas, we use premium raw materials and advanced manufacturing techniques to deliver top-quality Copper Nickel Buttweld Fittings. Our focus is on reliability, precision, and affordability to meet the exact needs of every industry we serve. Contact us today to learn more about our range and pricing.
Specification of Copper and Copper Nickel Alloy Butt Weld Fittings
| Specification | Details / Grades | Available Types |
|---|---|---|
| Standard | ASME B16.9 / B16.28, MSS-SP-43, ASTM B466 / B467 |
|
| Grades |
Copper Nickel 90/10 (C70600) Copper Nickel 70/30 (C71500) |
|
| Dimensions | ASME B16.9, ASME B16.28, MSS-SP-43, BS4504, BS10, BS1560 | |
| Size (Seamless) | ½” – 10” | |
| Size (Welded) | ½” – 48” | |
| Size Range | ½” NB to 24” NB in Sch 10s, 40s, 80s, 160s, XXS (DN6 ~ DN100) | |
| Thickness | SCH10, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXS | |
| Connection | Welding | |
| Type | DN15 – DN1200 | |
| Manufacturing Process | Push, Press, Forge, Cast, Hot / Cold Forming, Seamless, Welded | |
| Test Certificates |
EN 10204/3.1B, EN 10204/3.2 Raw Material Certificate 100% Radiography Test Report Third Party Inspection Report NACE MR0103 / MR0175 Compliant |
|
| Specialized In | Elbows, Tees, Crosses, Reducers, Pipe Cap, Stub End, Pipe Bends | |
| Applications | Marine Industry, Offshore Projects, Heat Exchangers, Desalination Plants, Oil Refineries, Condensers | |
| EIL & IBR Approved Fittings | ||
Types of Buttweld Fittings
Explore our precision-engineered Buttweld Fittings designed for leak-proof and high-strength piping systems.
Buttweld Elbow
Elbows allow directional changes in piping systems, available in 45°, 90°, and 180° bends for smooth fluid flow with minimal pressure loss.
Buttweld Tee
Tees are used to split or combine flow in pipelines, offered in equal and reducing types for
multiple outlet configurations.
Buttweld Reducer
Reducers transition between pipe sizes, available in concentric (center-aligned) and eccentric (offset) types to manage flow and avoid turbulence.
Buttweld Cap
End caps are used to block the end of a piping system, providing secure sealing in high-pressure and high-temperature conditions.
Buttweld Stub End
Stub ends are used with lap joint flanges, making them ideal for systems requiring frequent dismantling for inspection or maintenance.
Buttweld Nipple
Nipples are short pieces of pipe with bevelled ends used for connecting fittings, valves, or
other equipment in tight spaces.
Dimensions of Cupro Nickel 90/10 Reducers
| Nominal
Pipe Size |
Outside
Diameter |
Reducers | ||
|---|---|---|---|---|
| Reduced from (inches) |
(mm) | (inches) | Reduced to (inches) |
Concentric & Eccentric Length (inches) |
| 1/2 | 21.3 | 0.840 | 1/4 | 1 1/2 |
| 3/8 | 1 1/2 | |||
| 3/4 | 26.7 | 1.050 | 3/8 | 2 |
| 1/2 | 2 | |||
| 1 | 33.4 | 1.315 | 3/8 | 2 |
| 1/2 | 2 | |||
| 3/4 | 2 | |||
| 1 1/4 | 42.2 | 1.660 | 1/2 | 2 |
| 3/4 | 2 | |||
| 1 | 2 | |||
| 1 1/2 | 48.3 | 1.900 | 1/2 | 2 1/2 |
| 3/4 | 2 1/2 | |||
| 1 | 2 1/2 | |||
| 1 1/4 | 2 1/2 | |||
| 2 | 60.3 | 2.375 | 3/4 | 3 |
| 1 | 3 | |||
| 1 1/4 | 3 | |||
| 1 1/2 | 3 | |||
| 2 1/2 | 73.0 | 2.875 | 1 | 3 1/2 |
| 1 1/4 | 3 1/2 | |||
| 1 1/2 | 3 1/2 | |||
| 2 | 3 1/2 | |||
| 3 | 88.9 | 3.500 | 1 | 3 1/2 |
| 1 1/2 | 3 1/2 | |||
| 2 | 3 1/2 | |||
| 2 1/2 | 3 1/2 | |||
| 3 1/2 | 101.6 | 4.000 | 1 1/4 | 4 |
| 1 1/2 | 4 | |||
| 2 | 4 | |||
| 2 1/2 | 4 | |||
| 3 | 4 | |||
| 4 | 114.3 | 4.500 | 1 1/2 | 4 |
| 2 | 4 | |||
| 2 1/2 | 4 | |||
| 3 | 4 | |||
| 3 1/2 | 4 | |||
| 5 | 141.3 | 5.563 | 2 | 5 |
| 2 1/2 | 5 | |||
| 3 | 5 | |||
| 3 1/2 | 5 | |||
| 4 | 5 | |||
| 6 | 168.3 | 6.625 | 2 1/2 | 5 1/2 |
| 3 | 5 1/2 | |||
| 3 1/2 | 5 1/2 | |||
| 4 | 5 1/2 | |||
| 5 | 5 1/2 | |||
| 8 | 219.1 | 8.625 | 3 | 6 |
| 3 1/2 | 6 | |||
| 4 | 6 | |||
| 5 | 6 | |||
| 6 | 6 | |||
| 10 | 273.1 | 10.750 | 4 | 7 |
| 5 | 7 | |||
| 6 | 7 | |||
| 8 | 7 | |||
| 12 | 323.9 | 12.750 | 5 | 8 |
| 6 | 8 | |||
| 8 | 8 | |||
| 10 | 8 | |||
ASME B16 9 Cuni 90/10 Fittings Size
| Nominal Pipe Size |
Outside Diameter |
90° Elbows | 45° Elbows | 180° Returns | ||||
|---|---|---|---|---|---|---|---|---|
| (inches) | Long Radius | Short Radius | Long Radius | Long Radius | ||||
| (mm) | (inches) | Center to Face (inches) |
Center to Face (inches) |
Center to Face (inches) |
Radius (inches) |
Center to Center (inches) |
Back to face (inches) |
|
| 1/2 | 21.3 | 0.840 | 1 1/2 | – | 5/8 | 2 | 1 7/8 | |
| 3/4 | 26.7 | 1.050 | 1 1/8 | – | 7/16 | 2 1/4 | 1 11/16 | |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | 3 | 2 3/16 | |
| 1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | 3 3/4 | 2 3/4 | |
| 1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
| 2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
| 2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
| 3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
| 3 1/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 | 10 1/2 | 7 1/4 |
| 4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
| 5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 | 15 | 10 5/16 |
| 6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
| 8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
| 10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
| 12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
Features & Benefits
Our Copper and Copper Nickel Buttweld Fittings are engineered for high performance in marine, desalination, and offshore industries. These fittings are highly durable, corrosion-resistant, and ideal for fluid handling applications. We offer premium grades such as Copper Nickel 90/10 (C70600) and Copper Nickel 70/30 (C71500) to ensure maximum efficiency in challenging conditions.
- Excellent Resistance to Seawater – Prevents corrosion in saline and brine environments.
- High Thermal Conductivity – Maintains system efficiency under varying temperatures.
- Good Fabricability – Can be easily bent, formed, and welded.
- Superior Pressure Handling – Performs under high-pressure conditions without cracking.
- Long Service Life – Withstands long-term exposure to marine and chemical elements.
- Available in 90/10 and 70/30 Grades – For both general and high-performance usage.
- Wide Range of Thickness – From SCH10 to SCH160, including XXS.
- Meets International Standards – Compliant with ASTM, ASME, MSS-SP, and IBR norms.
- Custom Manufacturing – Precision-built sizes and types for tailored system requirements.
- Preferred in Marine & Oil Sectors – Ideal for offshore platforms, condensers, and cooling systems.