Top Cupronickel Pipes, Fittings and Copper Alloy Manufacturer & Exporter
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Top Cupronickel Pipes, Fittings and Copper Alloy Manufacturer & Exporter
•90/10 Copper Nickel Union Threadpiece•
90/10 Copper Nickel Union Threadpieces are precision-machined marine fittings manufactured in accordance with NAVSEA DWG 803-6397430 for use in naval, marine, and offshore piping systems. These fittings form an integral part of a complete union assembly and are designed to connect with matching union tailpieces and bronze union nuts, allowing convenient installation, maintenance, and disassembly of piping systems without disturbing adjacent pipework.
Manufactured from high-quality 90/10 Copper Nickel (UNS C70600), union threadpieces provide excellent resistance to seawater corrosion, erosion, biofouling, and impingement attack. Their superior corrosion resistance makes them particularly suitable for demanding marine service conditions where long-term reliability and performance are essential. The fittings are supplied with 400# socket weld dimensions in accordance with NAVSEA drawing requirements and can also be supplied to customer-specific requirements.
Available in sizes ranging from 1/4″ to 2-1/2″ or custom sizes, 90/10 Copper Nickel Union Threadpieces are widely used in seawater cooling systems, firemain systems, ballast piping, offshore platforms, desalination plants, and shipbuilding applications. Precision manufacturing ensures dimensional accuracy, leak-tight performance, and dependable operation under demanding service conditions. These fittings provide a durable and serviceable solution for critical marine piping installations requiring frequent inspection, maintenance, or component replacement.
Looking for high-quality 90/10 Copper Nickel Union Threadpieces manufactured to NAVSEA standards? Contact [email protected] today for pricing, technical assistance, custom sizes, and project-specific requirements.
| Product | 90/10 Copper Nickel Union Threadpiece |
| Specification | NAVSEA DWG 803-6397430 |
| Material | 90/10 Copper Nickel |
| Grade | UNS C70600 |
| Connection Type | Threaded x Socket Weld |
| Pressure Class | 400# Socket Weld Dimensions or as per requirement |
| Size Range | 1/4" to 2-1/2" (Custom Sizes Available) |
| Available Alloys | CuNi 90/10 & CuNi 70/30 |
| Applicable Standard | MIL-T-16420 |
| Applications | Marine, Naval, Offshore, Shipbuilding & Seawater Systems, etc. |
| Nominal Pipe Size (Inches) | Maximum Working Pressure (LB/IN²) | Maximum Temperature (°F) |
|---|---|---|
| 1/4 through 6 | 200 | 425 |
| Above 6 | 150 | 425 |
| 90/10 Copper Nickel (UNS C70600) | ||
| Nominal Pipe Size | 1/4 | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 |
|---|---|---|---|---|---|---|---|---|
| A | 0.85 (±0.02) | 0.94 (±0.02) | 0.99 (±0.02) | 1.18 (±0.02) | 1.25 (±0.02) | 1.43 (±0.02) | 1.58 (±0.02) | 1.67 (±0.02) |
| A1 | 1.0846 MIN - 1.0940 MAX | 1.2697 MIN - 1.2800 MAX | 1.4764 MIN - 1.4867 MAX | 1.8172 MIN - 1.8293 MAX | 2.1471 MIN - 2.1592 MAX | 2.5821 MIN - 2.5950 MAX | 2.9021 MIN - 2.9150 MAX | 3.5020 MIN - 3.5149 MAX |
| B | 0.828 (±0.010) | 0.984 (±0.010) | 1.188 (±0.010) | 1.468 (±0.010) | 1.750 (±0.010) | 2.125 (±0.010) | 2.375 (±0.010) | 2.906 (±0.010) |
| C | 0.545 (+0.030 / -0.000) | 0.680 (+0.030 / -0.000) | 0.845 (+0.030 / -0.000) | 1.055 (+0.030 / -0.000) | 1.320 (+0.030 / -0.000) | 1.665 (+0.030 / -0.000) | 1.905 (+0.030 / -0.000) | 2.380 (+0.046 / -0.000) |
| D | 17/64 MIN | 5/16 MIN | 3/8 MIN | 13/32 MIN | 7/16 MIN | 1/2 MIN | 5/8 MIN | 21/32 MIN |
| E (Thread) | 16-UNS | 14-UNS | 14-UNS | 11-UNS | 11-UNS | 10-UNS | 10-UNS | 10-UNS |
| All dimensions are in inches. Dimensions per NAVSEA DWG 803-6397430. Fittings may be ordered with reduced ends and/or female threads. For custom requirements contact [email protected] | ||||||||
| Intended For Use | Class 200 or Class 700 Copper Nickel Tube Systems |
| Applicable Standard | MIL-T-16420 |
| Drawing Reference | NAVSEA DWG 803-6397430 |
| Used With | Union Tailpiece and Bronze Union Nut |
| Typical Applications | Marine, Naval, Offshore, Firemain, Ballast, Cooling Water, Desalination & Seawater Piping Systems, etc. |
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