High Quality Copper Nickel Buttweld Pipe Fittings

70/30 • 90/10 • Strength • Sealing • Durability

Premium Copper Nickel 70/30 & 90/10 Buttweld Pipe Fittings by Ratnadeep Steel & Engg. Co.

Ratnadeep Steel & Engg. Co. is a leading manufacturer, exporter, and supplier of high-quality Copper Nickel 70/30 (Cu-Ni 70/30) and Copper Nickel 90/10 (Cu-Ni 90/10) Buttweld Pipe Fittings. These fittings are well-known for their exceptional resistance to seawater corrosion, biofouling, stress corrosion cracking, and erosion. Designed specifically for marine and offshore applications, Cu-Ni alloys provide long-term durability and reliable performance in highly corrosive environments involving brine, saltwater, and chlorides.

Precision-engineered using advanced forming and welding techniques, our Copper Nickel fittings ensure excellent strength, metallurgical stability, and ease of fabrication. We supply all major buttweld configurations including long/short radius elbows, equal & reducing tees, concentric & eccentric reducers, end caps, crosses, stub ends, and customized pipe bends. Both Cu-Ni 70/30 and 90/10 grades exhibit high resistance to impingement attack, making them ideal for high-velocity seawater systems and corrosive industrial applications.

Copper Nickel 70/30 (70% Copper, 30% Nickel) offers superior mechanical strength and enhanced corrosion resistance, while Copper Nickel 90/10 (90% Copper, 10% Nickel) provides excellent ductility and cost-effective performance for large-scale marine applications. These properties make our Cu-Ni Buttweld Fittings suitable for shipbuilding, desalination plants, offshore platforms, heat exchangers, seawater cooling systems, naval applications, oil & gas, and power generation. Supported by modern production facilities and strict quality control, Ratnadeep Steel & Engg. Co. ensures every fitting meets global standards including ASTM, ASME, and MIL specifications.

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Explore Copper Nickel 70/30 Buttweld Pipe Fittings

Copper Nickel 70/30 Buttweld Pipe Fittings

Explore Copper Nickel 90/10 Buttweld Pipe Fittings

Copper Nickel 90/10 Buttweld Pipe Fittings

Copper Nickel 70/30 Buttweld Fittings

High-performance Cu–Ni alloy with 70% copper & 30% nickel
Excellent resistance to seawater corrosion & biofouling
Superior mechanical strength for marine piping systems
Highly resistant to stress corrosion cracking & erosion
Used in condensers, seawater cooling systems & naval pipelines
Minimum tensile strength: ~275–350 MPa
Suitable for elbows, reducers, tees, stub ends & pipe bends
Performs reliably in high-salinity and turbulent flow conditions
Excellent weldability without risk of embrittlement

Copper Nickel 90/10 Buttweld Fittings

Economical Cu–Ni alloy with 90% copper & 10% nickel
Excellent corrosion resistance in brackish & seawater
Good mechanical strength with superior fabricability
Highly resistant to impingement attack & erosion-corrosion
Used in shipbuilding, desalination plants & marine hardware
Minimum tensile strength: ~245–310 MPa
Widely used for elbows, end caps, tees & reducers
Stable performance under continuous seawater exposure
Ideal for low-to-moderate pressure marine pipelines

Our Buttweld Pipe Fittings are manufactured using advanced processes and undergo extensive quality checks to ensure flawless weldability, durability, and long service life. Each fitting is thoroughly inspected using key NDT techniques such as radiographic testing (RT), ultrasonic testing (UT), hydrostatic testing, and visual/dimensional examination. We also perform detailed chemical composition analysis and mechanical property testing to ensure material compliance with strict industry standards.

Throughout the forming and welding stages, every buttweld fitting is monitored closely to eliminate defects such as misalignment, surface irregularities, and wall-thickness variations. This ensures perfect joint integrity and high-performance reliability in pipelines carrying high temperatures, pressures, and corrosive media. All our buttweld fittings fully comply with ASME, ASTM, MSS-SP, and related global specifications, making them a preferred choice for critical piping systems worldwide.

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Looking for high-quality Copper Nickel (CuNi) 70/30 and 90/10 Buttweld Pipe Fittings? Get in touch with us today.