ASTM B466 C70600 Copper Nickel 90/10 Elbow, Seawater Corrosion Resistant Tube Fitting for Marine Piping
| Product Name | CuNi 90/10 Pipe Fitting | Material | Copper Nickel C70600 (CuNi 90/10) / C71500 (CuNi 70/30) |
|---|---|---|---|
| Standard | ASTM B466 / ASTM B467 / ASME B16.9 / BS 2871 | Process | Seamless / Forged / Casting |
| Connection Type | Threaded (NPT/BSPT) / Compression Ferrule / Welding (Butt Weld/Socket Weld) | Face Type | Threaded End / Plain End / Grooved End |
| Size Range | 1/8" - 4" (DN6 - DN100) | Application | Marine Piping Systems / Seawater Desalination / Offshore Oil & Gas / Hydraulic Equipment / Shipbuilding |
| Surface Finish | Polished / Mill Finish / Anti-corrosion Coating |
ASTM B466 C70600 Copper Nickel 90/10 Elbow, Seawater Corrosion Resistant Tube Fitting for Marine Piping
1. Product Overview
The Copper Nickel 90/10 Elbow (C70600) is a high-performance pipe fitting designed for critical fluid conveyance systems. Manufactured from corrosion-resistant cupronickel alloy, this elbow features a 90-degree angled configuration to effectively redirect fluid flow in piping networks. Available in both seamless and forged construction, it ensures reliable performance under high-pressure and high-temperature conditions. Ideal for marine, offshore, and industrial hydraulic applications, our CuNi elbows strictly comply with ASTM B466 standards, guaranteeing dimensional accuracy and material integrity.
2. Key Technical Parameters
| Parameter | Specification |
|---|---|
| Material | Copper Nickel C70600 (CuNi 90/10) / C71500 (CuNi 70/30) optional |
| Standard | ASTM B466 / ASME B16.9 / BS 2871 |
| Process | Seamless Forged / Casting |
| Connection Type | Threaded (NPT/BSPT) / Compression Ferrule / Butt Weld / Socket Weld |
| Face Type | Threaded End / Plain End / Grooved End |
| Size Range | 1/8" – 4" (DN6 – DN100) |
| Angle | 45° / 90° / 180° available |
| Working Pressure | Up to 3000 PSI (depending on schedule) |
| Working Temperature | -20°C to +150°C |
| Surface Finish | Mill Finish / Polished / Anti-corrosion Coating |
3. Applications
This copper nickel elbow is widely used in:
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Marine Piping Systems – shipbuilding, ballast water lines, cooling systems
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Seawater Desalination Plants – reverse osmosis feed lines, brine discharge
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Offshore Oil & Gas Platforms – hydraulic control lines, firewater systems
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Industrial Hydraulic Equipment – high-pressure fluid transmission
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Heat Exchanger & Condenser Tube Networks
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4. Key Advantages
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Superior Corrosion Resistance – Excellent performance against seawater, brackish water, and chloride-induced pitting, far outperforming carbon steel and pure copper.
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Anti-Biofouling Properties – The natural copper content inhibits marine organism adhesion, reducing maintenance frequency.
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High Strength & Durability – Seamless forged construction ensures mechanical strength under extreme pressures and vibrations.
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Long Service Life – Up to 20-30 years in marine environments with minimal degradation.
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Full Traceability – Each batch comes with mill test certificates (MTC) per EN 10204 3.1.
5. Product Functions
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Flow Direction Change – Redirects fluid flow at precise 45°/90°/180° angles to accommodate piping layout requirements.
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Pressure Maintenance – Maintains system pressure integrity without leakage at connection points.
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System Flexibility – Allows pipeline routing around obstacles and space constraints in compact equipment layouts.
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Corrosion Barrier – Protects downstream equipment by minimizing internal corrosion and scaling.
6. Usage Instructions
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Inspection – Before installation, check for surface defects, dimensional accuracy, and thread integrity.
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Preparation – Clean pipe ends and fitting sockets thoroughly to remove debris, oil, or moisture.
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Installation (Threaded Type) – Apply appropriate thread sealant or PTFE tape on male threads. Tighten to recommended torque values (do not over-tighten to avoid cracking).
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Installation (Welding Type) – Follow qualified welding procedure specifications (WPS). Preheating is generally not required for CuNi alloys but ensure interpass temperature below 150°C.
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Post-Installation – Conduct hydrostatic pressure testing at 1.5x working pressure to verify joint integrity.
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Regular Maintenance – Periodically inspect for erosion, galvanic corrosion, or mechanical damage.
7. Shipping & Delivery
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Lead Time – 15-30 working days for standard sizes; 20–30 days for customized orders.
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Shipping Method – By sea freight (FCL/LCL), air freight, or express courier (DHL/FedEx/UPS) based on order quantity and urgency.
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Shipping Marks – Each carton/wooden case is labeled with product code, size, standard, and quantity.
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Documentation – Commercial invoice, packing list, bill of lading, certificate of origin, and mill test reports are provided with each shipment.
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Tracking – Tracking number and shipping schedule will be shared within 24 hours after dispatch.
8. Payment Terms
| Term | Details |
|---|---|
| Accepted Methods | T/T (Telegraphic Transfer), L/C (Letter of Credit), Western Union, Paypal (for samples) |
| Deposit | 30% down payment upon order confirmation |
| Balance | 70% balance payment before shipment or against B/L copy |
| Sample Order | 100% payment in advance via Paypal or T/T |
| Currency | USD, EUR, or CNY (subject to exchange rate fluctuations) |
9. After-Sales Service – Returns, Exchanges & Warranty
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Warranty Period – 12 months from the date of shipment against manufacturing defects.
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Exchange Policy – Free replacement will be issued for any non-conforming products confirmed by our QC team. Return shipping costs borne by seller if defect is our responsibility.
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Defect Handling – In case of quality issues during use, please contact our technical support within 7 days with detailed failure analysis. We will provide repair recommendations or replacement accordingly.
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Customer Support – 24/7 online after-sales service. Response within 8 hours (excluding weekends).
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Note – Returns due to incorrect ordering (wrong size, angle, or material) by the customer are subject to a 20% restocking fee, and return freight is at buyer's expense.

