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CuNi 70/30 Copper Nickel Elbow 90 Deg LR Seawater Corrosion Resistant ASME B16.9
| Place of Origin | Shanghai,China |
|---|---|
| Brand Name | TOBO |
| Certification | ISO/TUV/SGS |
| Model Number | Copper Nickel Elbow |
| Minimum Order Quantity | 1PC |
| Price | Negotiable |
| Packaging Details | Standard Shipping Package |
| Delivery Time | 15-30 Workdays |
| Payment Terms | T/T, Western Union |
| Supply Ability | 10Ton/Month |
Product Details
| Product Name | Copper Nickel Elbow | Corrosionresistance | High Resistance To Seawater Corrosion |
|---|---|---|---|
| Form | Pipe | Connection Type | Butt Weld, Socket Weld, Threaded |
| Port | Shanghai, Ningbo, Etc. | Finish | Polished Or As Fabricated |
| Oem | Acceptable | Weight | Light |
| Surfacefinish | Polished Or As Per Customer Requirement | Application | Marine, Offshore, Chemical Processing |
| Density | Approx. 8.9 G/cm³ | Paking | Wooden Case |
| Diameter | Customized | Warranty | 1 Year |
| Customized Support | OEM, ODM, OBM | Size | 1/2 Inch |
Product Description
CuNi 70/30 Copper Nickel Elbow 90 Deg LR Seawater Corrosion Resistant ASME B16.9
1. Product Description
A copper nickel elbow is a directional fitting in copper-nickel piping systems, mainly used to change the flow direction of the medium inside a pipeline. The product is usually manufactured from 90/10 copper nickel and 70/30 copper nickel, corresponding to UNS C70600 and UNS C71500. 90/10 copper nickel offers excellent seawater corrosion resistance, good thermal conductivity, and relatively good cost effectiveness. 70/30 copper nickel has a higher nickel content and provides better strength, erosion resistance, and corrosion resistance for more demanding conditions.
Copper nickel elbows can be formed by hot pressing, cold pushing, forging, or welding, and can be processed through solution annealing, pickling, and passivation. Common angles are 45°, 90°, and 180°. According to bending radius, they are divided into long radius and short radius. According to end connection, they are divided into butt weld, socket weld, threaded, press, flange, and bell end types. Product dimensions and materials can generally comply with ASTM B466, ASTM B467, ASME B16.9, ASME B16.28, MSS SP-43, EEMUA 146, and other standards.
2. Product Applications
Copper nickel elbows are suitable for seawater, brine, and corrosive media piping systems. Main applications include:
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Marine: seawater cooling, fire water, ballast water, bilge water, ballast water treatment, and desulfurization systems.
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Offshore engineering: offshore platforms, floating production storage and offloading units, subsea pipelines, and seawater injection lines.
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Desalination: seawater intake, reverse osmosis feed, and brine discharge.
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Power generation: condenser cooling, circulating water, and cooling water systems.
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Chemical industry: brine, corrosive liquids, and chemical media transportation pipelines.
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Other fields: liquefied natural gas facilities, hydraulic piping, HVAC, and general industrial piping.
3. Product Advantages
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Strong corrosion resistance: good resistance in seawater, brine, and many non-oxidising acids, with resistance to pitting, crevice corrosion, stress corrosion, and erosion corrosion.
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Anti-biofouling: the protective film on the copper-nickel surface helps inhibit marine organism attachment and reduces blockage risk.
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Good strength and toughness: capable of withstanding higher flow rates, pressure fluctuations, and vibration fatigue, suitable for long-term operation.
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Good thermal conductivity: suitable for heat exchangers, condensers, and cooling systems.
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Good fabrication and welding performance: easy to cold form, weld, and install, and can also be connected with certain other metals.
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Long service life: the protective film becomes stable during service, resulting in low corrosion rates and reduced maintenance costs.
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Flexible material selection: 90/10 copper nickel is economical and practical, while 70/30 copper nickel is suitable for more severe conditions.
4. Product Functions
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Changing medium flow direction: achieves 45°, 90°, or 180° direction changes.
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Completing pipe offset: enables pipe offset, misalignment correction, and rearrangement within complex spaces.
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Connecting and sealing: connects pipes through welding, press-fitting, threading, or other methods to form a sealed piping system.
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Reducing local resistance: long radius elbows provide smooth transition, reducing turbulence, pressure drop, and wear.
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Providing corrosion-resistant joints: serves as a key connection fitting in highly corrosive media, extending system service life.
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Adapting to complex layouts: helps the piping system achieve a reasonable route and reduces unnecessary connection points.
5. Key Technical Parameters
| Parameter | Specification |
| Material Grade | UNS C70600, UNS C71500 |
| Common Alloy | 90/10 copper nickel, 70/30 copper nickel |
| Manufacturing Process | Seamless, welded, hot pressed, cold pushed, forged |
| Angle | 45°, 90°, 180° |
| Bending Radius | Long radius, short radius |
| Nominal Size | DN15 to DN600, 1/2 inch to 24 inch |
| Wall Thickness | Sch5S, Sch10S, Sch40S, Sch80S, Sch160S, XS, XXS |
| End Connection | Butt weld, socket weld, threaded, press, flange, bell end |
| Dimensional Standard | ASME B16.9, ASME B16.28, MSS SP-43, EEMUA 146 |
| Raw Material Standard | ASTM B466, ASTM B467, etc. |
| Chemical Composition (90/10) | Nickel: 9.0% to 11.0%, Iron: 1.0% to 1.8%, Manganese: ≤1.0%, Copper: balance |
| Chemical Composition (70/30) | Nickel: 29.0% to 33.0%, Iron: 0.4% to 1.0%, Manganese: ≤1.0%, Copper: balance |
| Tensile Strength | 90/10 approximately 303 MPa to 414 MPa; 70/30 approximately 380 MPa to 550 MPa |
| Yield Strength | 90/10 approximately 110 MPa and above; 70/30 approximately 170 MPa and above |
| Elongation | Generally not less than 30% |
| Density | Approximately 8.94 g/cm³ |
| Thermal Conductivity | Approximately 29 to 45 W/(m·K) |
| Seawater Corrosion Rate | Typically below 0.025 mm/year |
| Operating Temperature | Seawater systems approximately -20°C to 120°C; press connections recommended -20°C to 95°C, peak 110°C |
| Pressure Rating | Press type commonly PN16; butt weld type up to Class 150 to 2500 |
| Surface Treatment | Pickling, passivation, sand blasting, polishing |
| Inspection Items | Chemical composition, mechanical properties, dimensions, hydrostatic test, non-destructive testing, PMI |
| Packaging | Wooden case, pallet, stretch film, or as per customer requirements |
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.
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