CUNI Threaded Pipe Nipple ASTM B466 UNS C70600 1/2" SCH20 ASME B16.11

Product Specification

CUNI Threaded Pipe Nipple ASTM B466 UNS C70600  1/2" SCH20  ASME B16.11

1. Product Description

This product is a threaded pipe nipple manufactured from UNS C70600 (90/10 Copper-Nickel alloy / CuNi 90/10) in accordance with ASTM B466 and ASME B16.11 standards. Also known as CuNi 90/10 or Werkstoff Nr. 2.0872, this alloy contains approximately 90% copper and 10% nickel, with small additions of iron and manganese to enhance strength and corrosion resistance. A pipe nipple is a short length of straight pipe with male threads on both ends, used to connect two female-threaded fittings or pipe ends. This 1/2" SCH20 Class 3000# fitting features NPT threaded connections, providing a reliable transition piece for small-bore piping systems in marine and corrosive service applications.

2. Key Product Parameters

3. Application / Usage

This threaded pipe nipple is ideal for seawater and corrosive fluid systems:

• Marine & Shipbuilding: Seawater cooling systems, firewater lines, ballast systems

• Offshore Oil & Gas: Platform piping, subsea applications, seawater injection lines

• Chemical Processing: Sulphuric and phosphoric acid services, heat exchangers

• Power Generation: Condenser cooling water systems, heat exchangers

• Desalination Plants: Seawater intake and brine recirculation lines

4. Advantages

• Superior Corrosion Resistance: Exceptional resistance to seawater, pitting, crevice corrosion, and chloride stress corrosion cracking

• Biofouling Resistance: Copper content naturally inhibits marine biological growth

• Threaded Convenience: No welding required; fast installation and easy disassembly for maintenance

• Cost-Effective: 90/10 CuNi offers a favorable balance of performance and cost compared to 70/30 CuNi

• Good Weldability: Single-phase alpha structure enables outstanding fabrication properties

• Small Bore Piping Ideal: Threaded fittings are commonly used for pipe diameters NPS 2 or smaller

5. Functions

The threaded pipe nipple provides a reliable, leak-proof mechanical connection between two female-threaded components (fittings, valves, or pipe ends). It serves as a transition piece in small-bore piping systems, enabling quick assembly, disassembly, and component replacement without welding operations. For the 1/2" SCH20 Class 3000# configuration, it provides a durable connection for corrosive service applications requiring high-pressure integrity.

6. Installation Instructions

1. Unpacking Inspection: Check for transit damage; verify markings, dimensions, and pressure class per ASME B16.11

2. Surface Preparation: Clean pipe threads and nipple threads thoroughly; remove all dirt, oil, and debris

3. Thread Sealant: Apply PTFE tape or pipe dope to male threads to ensure a reliable seal

4. Thread Engagement: Screw the nipple into the first female fitting by hand, then tighten with a wrench to appropriate torque

5. Avoid Over-tightening: Do not exceed recommended torque to prevent cracking the fitting body

6. Inspection: After installation, perform leak test per system requirements

7. Precautions

• Thread Compatibility: NPT, BSPT, and BSPP threads are not interchangeable. Verify thread type per system specification

• Temperature Limit: For aqueous corrosion service, verify system conditions for temperatures above 400°C; structural integrity disintegrates at elevated temperatures above 400°C

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

• Vibration Sensitivity: Threaded fittings are not recommended on lines subject to significant vibration, thermal shock, or hazardous fluid service

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

8. Shipping & Delivery

• Standard delivery time is typically 15–30 days, subject to order quantity, pressure class, 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 or wooden crates 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

• Third-party inspection (ABS, DNV, CCS, LR, BV, etc.) available upon request

• 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.