Butt-welding Pipe Fittings CUNI Equal Tee 2'' SCH40 CuNi 7030 ASME B16.9

1. Product Description

This product is a butt-welding equal tee fitting manufactured in accordance with ASME B16.9 standards . The material is CuNi 70/30 (also designated as UNS C71500), a high-performance copper-nickel alloy composed of approximately 70% copper and 30% nickel . This 2" Schedule 40 fitting is designed for permanent butt-weld connection in demanding piping systems.

2. Key Product Parameters

3. Application / Usage

This equal tee is ideal for demanding seawater and marine environments :

• Marine & Shipbuilding: Seawater piping systems, offshore platforms, subsea applications, Naval surface ships

• Power Generation: Condenser and heat exchanger piping

• Chemical & Petrochemical: Corrosive fluid handling systems

• Pump and Valve Connections: Branch and distribution points requiring high corrosion resistance

• Dividing or combining flow within a main pipeline

4. Advantages

• Superior Corrosion Resistance: Exceptional resistance to seawater corrosion, pitting, and stress corrosion cracking ; outperforms 90/10 CuNi in more hostile operating environments

• Biofouling Resistance: Forms a protective oxide layer that resists biological fouling , making it ideal for marine immersion service

• Enhanced Strength: High nickel content provides good strength and toughness

• Good Weldability: Readily weldable using standard processes with ERCuNi filler material

• Permanent Leak-Proof Connection: Butt-weld design provides high structural integrity for critical systems

5. Functions

The equal tee connects three sections of pipe in a T-shaped configuration, enabling fluid to be divided from a single inlet into two branch outlets, or combined from two inlets into one outlet . It provides a permanent, leak-proof junction point with three ports of equal diameter (2" run and branch).

6. Installation Instructions

1. Preparation: Degrease and clean pipe ends, tee weld areas, and filler metal of all contaminants (oil, grease, oxidation, dust) .

2. Edge Preparation: Bevel pipe ends and tee weld ends as per joint preparation requirements .

3. Alignment: Accurately align the tee with connecting pipes ensuring proper fit-up .

4. Tacking: Apply minimum tack welds to hold the assembly in position; clean thoroughly before final welding .

5. Welding: Use TIG (GTAW) process with ERCuNi filler wire (AWS A5.7 ERCuNi) . Preheat to min. 60°F (15°C) and maintain max. interpass temperature of 150°F (65°C) . Shielding gas: 100% argon, #6 cup minimum, flow rate 20-25 CFH . Use foot control to taper current off to prevent crater cracks .

6. Post-Weld Cleaning: Remove spatter and slag; clean with stainless steel brush or rotating flapper wheel to leave a bright finish .

7. Precautions

• Temperature Control: Strictly control interpass temperature not exceeding 150°F (65°C) to avoid microcracking .

• Crater Sensitivity: Stops/terminations are very sensitive to crater pits or cracks – always taper current off and grind all stops .

• No Post-Weld Heat Treatment: Heat treatment is not required after welding .

• Back Purging: Use 99.9% argon back-purge to prevent internal oxidation .

• Filler Metal: Use matching 70/30 CuNi consumables (ERCuNi) .

• Cleanliness: Requires a higher degree of cleanliness than for steel fabrication .

8. Shipping & Delivery

• Standard delivery time is typically 15–30 days, subject to order quantity and specification availability.

9. Payment Terms

• Common international payment methods include T/T (Telegraphic Transfer) and L/C at sight (Letter of Credit) .

10. Packaging

• Products are securely packed in wooden crates or carton packaging with internal cushioning to ensure safe transportation and prevent damage during transit .

11. After-Sales / Return & Warranty Policy

• All products undergo strict quality inspection before shipment.

• In case of quality issues, retain original packaging and provide relevant photos or third-party inspection reports.

• 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.