Pipes & Tubes
Seamless and welded Cu-Ni pipes and tubes for seawater piping systems, condensers and heat exchangers.
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Copper-Nickel Alloy Manufacturer
Copper-Nickel Piping Components, Engineered for the Sea
Sunflex Metalloy manufactures CuNi 90/10 and 70/30 pipes, tubes, fittings, flanges, bars and plates for marine, offshore and desalination applications — built to ASTM and ASME dimensional standards, from an ISO 9001:2015-certified facility in India.
Est. 2010Manufacturing since
ISO 9001:2015Certified quality system
Umbergaon, GujaratManufacturing facility, India
CuNi 90/10
UNS C70600
Cu Bal.
Ni 9.0–11.0%
Fe 1.0–1.8%
Mn 1.0% max
Standard marine grade — seawater piping, tubing, condensers & heat exchangers.
CuNi 70/30
UNS C71500
Cu Bal.
Ni 29.0–33.0%
Fe 0.4–1.0%
Mn 1.0% max
Higher strength grade — high-velocity seawater and severe-service applications.
Products
Engineered Copper-Nickel Components
Every product line is manufactured in-house in both CuNi 90/10 and 70/30 grades, to the size, schedule and standard your project calls for.
Pipe Fittings
Elbows, tees, reducers, couplings and unions in socket-weld, butt-weld and threaded configurations.
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Flanges
Weld-neck, slip-on, blind, socket-weld and threaded flanges machined to ASME B16.5 dimensions.
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Bars
Round, hexagonal and square bar stock supplied for machined components and forged fittings.
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Plates
Cu-Ni plates and sheets for fabrication, ship-hull sheathing and cladding applications.
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Custom & Non-Standard
Non-standard sizes, dimensions and forged components manufactured to your drawing or sample.
Discuss your requirementCapabilities
Built on In-House Manufacturing Control
From raw alloy to a crated, export-ready shipment, every stage happens under one roof — machined, inspected and packed by our own team.
ISO 9001:2015 Certified
Quality management systems audited and certified to the current ISO standard.
In-House CNC Machining
CNC turning and threading performed on-site for tight dimensional tolerance.
100% Dimensional Inspection
Every batch is visually and dimensionally checked before packing.
Export-Ready Packaging
Seaworthy wooden crating with moisture protection and full shipping documentation.
Wooden CratingMoisture-protected
InspectionBatch-checked
DocumentationShipment-ready
Quality & Export
Ready for the Journey Overseas
Every order is packed to survive a sea voyage, not just a factory floor — and arrives with the paperwork your import and QA teams need on day one.
- Seaworthy wooden crates with foam or poly-wrap protection
- Heat / batch number traceability on finished components
- Quality inspection and shipping documentation with every order
- Manufactured to ASTM, ASME and equivalent international standards
Industries Served
Where Copper-Nickel Performs
Excellent seawater corrosion resistance and anti-biofouling properties make Cu-Ni the material of choice across marine and process industries.
Marine & Shipbuilding
Offshore Oil & Gas
Desalination Plants
Power Generation
Chemical Processing
About Sunflex Metalloy
Manufacturing Since 2010
Sunflex Metalloy Pvt. Ltd. is an ISO 9001:2015-certified manufacturer of Copper-Nickel alloy piping components, operating from our own manufacturing facility in Umbergaon, Gujarat, India. sunflexmetal.us is our point of contact for buyers and project teams in the United States.
Our team machines, inspects and packs every order in-house — giving customers a single point of accountability from raw alloy to a crate on the dock.
2010Established
2Cu-Ni Grades — 90/10 & 70/30
5Product Lines
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Tell us the grade, size, standard and quantity you need. Our team will come back to you with pricing and lead time.