70/30 CuNi Reducing Tee Butt Welding Fittings ASME B16.5 Class150 Forged Offshore
| Product Name | 70/30 CuNi Reducing Tee Butt Welding Fittings ASME B16.5 Class150 Forged Offshore | Color | Silver |
|---|---|---|---|
| Surface | Paint Spraying | Standards | ASME B16.11, ASTM A182 |
| End Type | Equal | Application | Plumbing, Gas, Oil, Water Systems |
| Product Type | Cooper Nickel Tee Reducing Tee | Corrosionresistance | High |
| Package Quantity | Depends | Type | Steel Pipe |
| Grade | 70600 | Technics | Casting |
| Country Of Origin | United States | Length | Required |
| Wallthickness | Schedule 40 | Coating | Brass |
70/30 CuNi Reducing Tee Butt Welding Fittings ASME B16.5 Class150 Forged Offshore
1. Product Description
The Copper Nickel Reducing Tee is a forged or extruded pipe fitting manufactured from corrosion-resistant CuNi alloys, offered in 90/10 (UNS C70600) and 70/30 (UNS C71500) compositions. Its T-shaped geometry comprises a full-diameter run end and two smaller-diameter branch ends, enabling simultaneous flow division and pipe size reduction within a single integral component.
This fitting is designed to meet the rigorous demands of seawater and aggressive fluid handling systems. It is available with butt-weld ends (beveled per ASME B16.25), socket-weld ends (square-cut with chamfer), or female threaded ends (NPT or BSP). The standard surface finish includes pickling and passivation, which removes mill scale and provides a chemically clean surface that enhances the natural corrosion resistance of the alloy.
2.Product Applications
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Marine and coastal infrastructure – installed in seawater intake, cooling, and discharge systems aboard commercial fleets, including container ships, bulk carriers, tankers, and cruise liners.
Offshore energy production – utilized in platform seawater service pumps, heat exchanger cooling circuits, and emergency firewater distribution headers.
Desalination facilities – employed in reverse osmosis pretreatment feed lines, high-pressure brine reject manifolds, and permeate collection systems.
Power generation – integrated into condenser circulating water loops and auxiliary plant cooling networks at fossil-fuel, combined-cycle, and nuclear stations.
General industrial sectors – found in refinery heat exchanger banks, chemical plant transfer piping, HVAC chiller water systems, and compressed air distribution.
Commonly handled fluids: Seawater, estuary/brackish water, industrial freshwater, steam, compressed gases, and light petroleum products.
3. Product advantages:
Industry-leading corrosion resistance – CuNi alloys exhibit exceptionally low corrosion rates in chloride-rich environments, with documented performance of less than 0.025 mm per year in seawater. This translates to decades of trouble-free operation without wall thinning or pitting concerns.
Integrated anti-fouling protection – the release of copper ions from the alloy surface naturally discourages settlement of barnacles, mussels, and algae. This inherent property minimizes biofouling-related flow restriction and eliminates routine chemical or mechanical cleaning cycles.
High flow velocity capability – the material maintains its integrity under flow velocities up to 5 m/s in seawater, resisting erosion-corrosion mechanisms that quickly degrade lower-grade materials in similar conditions.
Fabrication-friendly – CuNi alloys are readily welded using standard TIG and MIG techniques with ERCuNi filler wire. Preheat requirements are modest (100–150°C only for sections over 20mm), simplifying field installation.
Reliable documentation – each fitting is accompanied by a material test certificate. Optional third-party surveyor inspection (DNV, ABS, Lloyd's) can be arranged to satisfy project-specific quality requirements.
Environmentally responsible – free from lead and other hazardous elements; fully recyclable at end of service life, contributing to sustainable project outcomes.
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4.Product Specifications
| Parameter | Value |
| Material Grades | UNS C70600 (90/10 CuNi) / UNS C71500 (70/30 CuNi) |
| Fitting Type | Reducing Tee (Run × Branch1 × Branch2) |
| Size Range (DN) | DN15 – DN600 (½″ – 24″) |
| Reduction Ratio | Customizable (typical: 2:1, 3:2, 4:3) |
| End Connections | Butt Weld (BW), Socket Weld (SW), Threaded (NPT/BSP) |
| Pressure Classes | Class 150, 300, 600, 900, 1500, 2500, 3000 lb |
| Wall Thickness Schedules | SCH10, SCH20, SCH40, SCH80, SCH160, STD, XS, XXS |
| Design Standards | ASME B16.9, ASME B16.11, MSS SP-79, DIN 86088, EN 1254-4, EEMUA 146 |
| Operating Temperature | –50°C to +300°C (derate above 260°C) |
| Max Recommended Velocity | Seawater ≤5 m/s; Fresh water/air ≤15 m/s |
| Tensile Strength (70/30) | ≥380 MPa |
| Yield Strength (70/30) | ≥140 MPa |
| Elongation after Fracture | ≥30% (both grades) |
| Hardness | ≤80 HRB |
| Seawater Corrosion Rate | <0.025 mm/year (typical) |
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.

