Butt-welding Pipe Fittings CUNI Reducing Tee 2'' SCH80 ASTM B466 UNS C70600 ASME B16.9
Butt-welding Pipe Fittings CUNI Reducing Tee 2'' SCH80 ASTM B466 UNS C70600 ASME B16.9
1. Product Description
This product is a butt-welding reducing tee manufactured from UNS C70600 (90/10 Copper-Nickel alloy) in accordance with ASTM B466 and ASME B16.9 standards . Also known as CuNi 90/10 or Werkstoff Nr. 2.0872, this alloy offers an excellent balance of corrosion resistance, strength, and cost-effectiveness . This 2" Schedule 80 fitting is designed for permanent, leak-proof butt-weld connections in demanding piping systems .
2. Key Product Parameters
| Parameter | Details / Range |
|---|---|
| Material Standard | ASTM B466 / ASME SB466 |
| Dimensional Standard | ASME B16.9, ASME B16.28, MSS-SP-43 |
| Material Grade | UNS C70600 (CuNi 90/10 / 2.0872) |
| Type | Reducing Tee (Branch size smaller than run) |
| Nominal Size | 2" (DN50) |
| Wall Thickness | Schedule 80 |
| End Connection | Butt-weld ends (beveled for welding) |
| Density | 8.94 g/cm³ |
| Chemical Comp. | Cu: ≥88.6%, Ni: 9.0-11.0%, Fe: 1.0-1.8%, Mn: 0.5-1.0% |
| Tensile Strength | 303–414 MPa (44,000–60,000 psi) |
| Yield Strength | ~110–135 MPa (16,000–20,000 psi) |
| Elongation | 30–42% |
3. Application / Usage
This reducing tee is ideal for seawater and corrosive fluid systems :
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Marine & Shipbuilding: Seawater cooling systems, firefighting pipelines, ballast systems, bilge lines
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Offshore Oil & Gas: Seawater injection systems, heat exchangers
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Desalination Plants: Brine heaters, condenser tubing
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Power Generation: Condensers, cooling water systems
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Coastal Infrastructure: Harbor facilities, sewage outfalls
4. Advantages
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Superior Corrosion Resistance: Exceptional resistance to seawater corrosion, pitting, crevice corrosion, and stress corrosion cracking
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Biofouling Resistance: Forms a protective oxide layer that resists marine biological fouling
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Cost-Effective: Offers a favorable balance of performance and budget compared to titanium or super duplex grades
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Good Weldability: Readily weldable using standard processes
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Non-Magnetic & Low Maintenance: Ideal for subsea and buried systems where access is difficult
5. Functions
The reducing tee connects three pipe sections in a T-shaped configuration, enabling fluid to be divided from a larger main pipe (run) into a smaller branch pipe, or combined from a smaller branch into a larger main line . It provides a permanent, leak-proof junction for transitioning between different pipe sizes in the distribution network.
6. Installation Instructions
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Preparation: Degrease and clean pipe ends, tee weld areas, and filler metal of oil, grease, and oxidation .
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Alignment: Accurately align the tee with connecting pipes ensuring proper fit-up. Reduce branch connects to smaller pipe.
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Welding: Use TIG (GTAW) process with matching ERCuNi filler wire (AWS A5.7). Use 100% argon shielding gas. Keep heat input under control.
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Post-Weld Cleaning: Clean with stainless steel brush to leave a bright finish. No post-weld heat treatment is required .
7. Precautions
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Stress Control: Minimize residual stresses as any stress can cause intergranular penetration and severe stress cracking .
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Crater Sensitivity: Stops/terminations are sensitive to crater pits – always taper current off and grind all stops .
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Cleanliness: Requires a higher degree of cleanliness than for steel fabrication .
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Temperature Limit: Avoid use above 300°C to prevent degradation .
8. Shipping & Delivery
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Standard delivery time is typically 15–30 days, subject to order quantity and specification availability.
9. Payment Terms
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Common international payment methods include T/T (Telegraphic Transfer) and L/C at sight (Letter of Credit) .
10. Packaging
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Products are securely packed in plywood cases or wooden crates with internal cushioning to ensure safe transportation and prevent damage during transit .
11. After-Sales / Return & Warranty Policy
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All products undergo strict quality inspection before shipment.
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In case of quality issues, retain original packaging and provide relevant photos or third-party inspection reports.
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Specific return, exchange, and warranty terms are subject to the final sales contract agreement.
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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