Copper Nickel 90/10 Flanges, ASTM B151 UNS C70600 Blind Flange, Slip On Flange, Weld Neck Flange

Copper Nickel 90/10 Flanges (Cu-Ni 90/10) are highly reliable piping components designed for seawater, marine, and offshore applications where resistance to corrosion, erosion, and biofouling is essential. Manufactured in accordance with ASTM B151 UNS C70600, these flanges combine durability with excellent mechanical strength, making them an ideal choice for critical piping systems. Available types include Blind Flange, Slip On Flange, and Weld Neck Flange, each engineered to meet international standards and ensure long service life in harsh environments.

 Key Features & Benefits

1.Superior Corrosion Resistance: The 90/10 copper-nickel alloy (90% copper, 10% nickel, with small additions of iron and manganese) provides outstanding resistance against seawater corrosion, stress cracking, and pitting.

2.High Strength & Toughness: ASTM B151 UNS C70600 flanges exhibit good mechanical properties at both ambient and elevated temperatures.

3.Excellent Fabricability: Easy to machine, weld, and install in piping systems, reducing overall project costs.

4.Versatile Applications: Widely used in shipbuilding, desalination plants, offshore oil platforms, power generation, and chemical processing industries.

5.Standard Compliance: Produced according to ASTM, ASME, and EEMUA standards, ensuring compatibility and reliability.

 Technical Specification

Typical Chemical Composition (ASTM B151 UNS C70600)

Mechanical Properties

Frequently Asked Questions (FAQ)

Q1: What are the main advantages of Copper Nickel 90/10 flanges?
A1: They provide superior resistance to seawater corrosion, ease of fabrication, and reliable mechanical strength.

Q2: Where are Cu-Ni 90/10 flanges commonly used?
A2: In marine engineering, desalination plants, offshore oil & gas, condensers, heat exchangers, and shipbuilding.

Q3: How do Blind, Slip On, and Weld Neck flanges differ?
A3: Blind flanges close pipeline ends, slip on flanges allow easy alignment and welding, while weld neck flanges handle high-pressure applications with excellent stress distribution.

Q4: Are these flanges certified?
A4: Yes, they are supplied with Mill Test Certificates (EN 10204 3.1/3.2) ensuring compliance with ASTM B151 UNS C70600 and other relevant standards.

Kasugai Group supply pipe fittings,steel pipes and flanges products for 100 years,If you want to know more about our piping products,please email us:zhangying@kasugai-group.co.jp