CuNi 70/30 Copper Nickel Equal Tee C71500 Corrosion Resistant Weldable Marine Fitting
| Product Name | Copper Nickel Equal Tee | Alloy Composition | Cu-Ni 70/30 Or 90/10 |
|---|---|---|---|
| Size Range | 1/2 Inch To 24 Inches | Face Type | Beveled End / Plain End |
| Delivery | According To Quantity | Manufacturingprocess | Seamless Or Welded |
| Connection Type | Butt Weld / Socket Weld / Threaded | Standard Of Execution | HG/T20592-2009 |
| Technics | Casting | Connectiontype | Butt Weld |
| Head | Round | Type | Equal Tee |
| Temperature Range | -196°C To 400°C | Pressure Rating | Up To 3000 Psi Depending On Size And Schedule |
| Connection | Socket Weld | Corrosion Resistance | Excellent Resistance To Seawater And Corrosion |
CuNi 70/30 Copper Nickel Equal Tee C71500 Corrosion Resistant Weldable Marine Fitting
1. Product Description
The Copper Nickel Equal Tee is a pipe fitting with three identical branch openings of equal internal diameter, designed for equal-diameter branch connections in piping systems. Manufactured from copper-nickel alloy, typically CuNi 90/10 or CuNi 70/30, by precision die forging or seamless tube extrusion, it conforms to international standards including ASTM B466, ASME B16.9, EEMUA 146, and DIN 86088. The copper nickel equal tee offers excellent seawater corrosion resistance, good weldability, thermal stability, and superior erosion resistance.
2. Product Applications
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Shipbuilding and Offshore: Seawater cooling systems, ballast water treatment inlets and outlets, fire mains, bilge branch lines, seawater intake lines.
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Offshore Oil and Gas Platforms: Seawater lift pump outlet manifolds, platform firewater ring mains, cooling water distribution systems.
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Desalination: RO feed header branches, brine recirculation lines, product water transmission piping.
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Chemical and Petrochemical: Chlorine-containing wastewater pipes, cooled brine lines, heat exchanger cooling water bypass lines.
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Power Industry: Essential service water in nuclear plants, circulating cooling water in thermal plants, auxiliary cooling in hydro plants.
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Municipal Engineering: Beach water supply, port firewater systems, aquarium life support piping.
3. Product Advantages
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Excellent Seawater Corrosion Resistance: Corrosion rate below 0.03 mm/year in chloride media, with outstanding resistance to pitting, crevice corrosion, and stress corrosion.
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Inherent Biofouling Resistance: Naturally releases copper ions, preventing barnacles, oysters, and algae attachment; fouling rate over 60% lower than 316L stainless steel, significantly reducing pipeline cleaning frequency.
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Good Workability and Weldability: Can be cold or hot bent; no hardening cracks during welding; suitable for field installation.
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Wide Temperature Range Adaptability: Maintains good toughness at -40°C; no significant strength loss at 300°C.
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Corrosion Fatigue Resistance: High fatigue life under cyclic stress and corrosive media.
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Excellent Cost-Performance: In seawater service, total life-cycle cost is much lower than titanium and super austenitic stainless steel.
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Long Service Life: Service life of 25+ years in marine environments.
4. Product Functions
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Equal-Diameter Flow Division or Combination: Divides main fluid equally into two branch lines, or combines two equal-diameter fluid streams into one main pipeline.
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Right-Angle Branch Connection: Provides a 90° perpendicular branch outlet, with all three ports having identical internal diameters, suitable for equal-diameter branch junctions.
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Flow Transition: Smooth internal wall transition ensures turbulence-free and vortex-free fluid passage with reasonable pressure drop.
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Piping System Connection: Serves as a critical connection fitting in piping networks, enabling flow direction changes and branch extensions.
5. Key Technical Parameters
| Parameter | Specification |
| Material Grade | CuNi 90/10 (UNS C70600, CuNi10Fe1Mn, DIN 2.0872), CuNi 70/30 (UNS C71500) |
| Chemical Composition (C70600) | Cu ≥ 88.6%, Ni 9.0–11.0%, Fe 1.0–1.8%, Mn ≤ 1.0% |
| Nominal Size | 1/2"–36" (DN15–DN900), customizable |
| Branch Size | Same as main pipe, equal diameter |
| Wall Thickness | SCH5S, SCH10S, SCH40S, SCH80S, SCH160, XS, XXS |
| Pressure Rating | Class 150–Class 3000; Max. 3000 psi; 16 bar or 20 bar under EEMUA 234 |
| Temperature Range | -50°C to +300°C |
| Tensile Strength | 303–414 MPa (44,000–60,000 psi) |
| Yield Strength (0.2%) | ≥ 105 MPa |
| Elongation | 30–42% |
| Density | 8.94 g/cm³ |
| Standards | ASTM B466/ASME SB466, ASME B16.9, EEMUA 146, EEMUA 234, DIN 86088 |
| End Connection | Butt Weld, Socket Weld, Threaded |
| Manufacturing Process | Seamless hot-pushing or die forging, plus solution annealing, plus pickling and passivation |
| Testing | PMI analysis, dimensional inspection, X-ray for welded seams, third-party inspection optional |
| Certification | EN 10204 3.1 MTC; ABS, DNV, CCS, LR classification society certificates available |
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FAQ
1. Are you trading company or manufacturer ? We are manufacturer ,You can see the certification.
2.How long is your delivery time? Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ? Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ? Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.

