CuNi 9010 Seamless Pipe 10" SCH40 ASME B36.19M for Petrochemical Applications

 CuNi 9010 Seamless Pipe 10" SCH40 ASME B36.19M for Petrochemical Applications

1. Product Description

This product is a seamless copper-nickel (CuNi) pipe manufactured from UNS C70600 (90/10 CuNi) in accordance with ASTM B466 and ASME B36.19M standards . CuNi 90/10, also known as CuNi10Fe1.6Mn, is a wrought copper alloy containing approximately 90% copper and 10% nickel, with minor additions of iron and manganese to enhance corrosion resistance and strength . This 10" Schedule 40 pipe is produced from cast billets via hot extrusion or piercing, followed by cold working and annealing processes, ensuring consistent quality and mechanical properties .

2. Key Product Parameters

3. Application / Usage

This CuNi 90/10 seamless pipe is ideal for seawater and aggressive fluid systems:

• Marine & Offshore: Seawater piping systems, shipbuilding, offshore platforms, firewater systems 

• Desalination Plants: Seawater intake, reverse osmosis feed lines, brine discharge

• Power Generation: Condenser and heat exchanger tubing, cooling water systems

• Petrochemical: Chemical process piping, heat exchangers 

4. Advantages

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

• Biofouling Resistance: Forms a protective oxide layer that naturally resists marine biological growth 

• Excellent Weldability: Readily weldable using standard GTAW processes with matching ERCuNi filler 

• High Ductility: Good ductility after annealing, facilitating fabrication and bending 

• Cost-Effective: Offers a favorable balance of performance and cost compared to 70/30 CuNi or higher nickel alloys 

5. Functions

The CuNi 90/10 seamless pipe serves as the primary conduit for transporting seawater, corrosive fluids, or process media in demanding industrial applications. Its smooth internal bore and seamless construction ensure efficient flow, minimal turbulence, and long-term reliability in harsh environments .

6. Installation Instructions

1. Cleaning: Degrease and clean pipe ends and weld areas thoroughly; CuNi requires a higher degree of cleanliness than steel 

2. Handling: Avoid contamination from carbon steel tools; use dedicated stainless steel tools 

3. Cutting: Cut pipe squarely using appropriate methods; deburr ends

4. Welding: Use GTAW (TIG) process with ERCuNi filler wire (AWS A5.7); use 100% argon shielding; back purge recommended for root pass to prevent internal oxidation 

5. Post-Weld: No heat treatment required after welding; clean with stainless steel brush or rotating flapper wheel to leave a bright finish 

7. Precautions

• Cleanliness: Requires a higher degree of cleanliness than standard carbon steel fabrication to prevent weld contamination 

• Welding Heat Input: Requires more amperage than expected; puddle is sluggish with an oxide film 

• Filler Metal: 70/30 CuNi consumables are often recommended for welding 90/10 due to superior deposition characteristics 

• Crater Sensitivity: Use crater fill option or taper current to prevent crater cracks 

• Compatibility: Not recommended for use with nitric acid or ammonia systems 

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, plywood cases, or bundles with internal cushioning to ensure safe transportation and prevent damage .

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.