UNS C70600 Copper Nickel Butt Welding Equal Tee 2" ASTM B466 Pipe Fitting

Product Specification

UNS C70600 Copper Nickel Socket Weld Tee ASTM B151 1" Forged Pipe Fitting

1. Product Description

This product is a butt-welding equal tee manufactured from UNS C70600 (90/10 Copper-Nickel alloy / CuNi 90/10) in accordance with ASTM B466 and ASME B16.9 standards. Also known as CuNi10Fe1Mn or Werkstoff Nr. 2.0872, this alloy contains approximately 90% copper and 10% nickel, with small but important additions of iron (1.0-1.8%) and manganese to enhance overall strength and corrosion resistance. This 2" fitting is designed for permanent butt-weld connection, providing a three-way junction with equal-diameter ports for perpendicular flow branching.

2. Key Product Parameters

3. Application / Usage

This equal tee is ideal for seawater and corrosive fluid systems requiring flow distribution:

• Marine & Shipbuilding: Main engine cooling water, ballast systems, firewater lines, deck washing systems

• Offshore Oil & Gas: Seawater lift pipes, platform cooling water ring mains, emergency firewater systems, seawater injection

• Desalination Plants: Flash chamber brine circulation, reverse osmosis feed distribution, concentrate outfall

• Power Generation: Condenser cooling water systems, nuclear plant component cooling water

• Chemical Processing: Electroplating wastewater, saline organic waste liquid lines, cooling tower makeup water

4. Product Advantages

• Superior Seawater Corrosion Resistance: Exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in marine environments; only 0.5mm corrosion allowance needed for 20 years of service

• Biofouling Resistance: Natural resistance to marine organism attachment due to copper ion release

• Excellent Weldability: Single-phase alpha structure enables outstanding fabrication properties; no preheating or post-weld heat treatment required

• Cost-Effective: Offers favorable balance of performance and cost compared to 70/30 CuNi, titanium, or super duplex grades

• Low Maintenance: Long service life with minimal upkeep; ideal for systems where access for repairs is difficult

5. Product Functions

The butt-welding equal tee connects three pipe sections in a T-shaped configuration with all three ports of equal diameter (2"). It enables fluid to be divided from a single inlet into two branch outlets, or combined from two inlets into one outlet, providing a permanent, leak-proof junction point for flow distribution in piping systems.

6. Installation Instructions

1. Unpacking Inspection: Check for transit damage; verify markings are clear and complete

2. Surface Preparation: Clean bevel and 30mm of inner/outer wall area with stainless steel wire brush; remove all oil, grease, and paint

3. Alignment: Accurately align the tee with connecting pipes. Maximum permissible misalignment during fit-up is 10% of wall thickness, not exceeding 1.5mm

4. Welding: Use GTAW (TIG) process with ERCuNi filler wire (AWS A5.7). Use low current and fast welding speed to avoid overheating. Shielding: 100% argon or Ar-He mix. Preheating generally not required; maximum interpass temperature 150°C. No post-weld heat treatment required

5. Hydrotest: Test pressure = 1.5 × design pressure; ambient temperature should not be below 5°C during testing

7. Precautions

• Cleanliness: Requires a higher degree of cleanliness than carbon steel fabrication; use dedicated stainless steel tools

• Temperature Limit: Maximum service temperature ~300°C

• Prohibited Contact: Do not contact with low-melting-point metals such as zinc, cadmium, or lead

• Medium Compatibility: Not recommended for use with strong oxidizing acids (e.g., nitric acid) or ammonia systems

• Welding Heat Input: CuNi puddle is sluggish with an oxide film; requires appropriate amperage control

8. Shipping & Delivery

• Standard delivery time is typically 7–30 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 plywood cases, wooden crates, or pallets 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, with Mill Test Certificates (EN 10204 3.1/3.2) available

• 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.