C70600 Copper Nickel Weld neck Flange EEMUA 145 Manufacturer
We are a professional manufacturer of C70600 Weld neck flanges, C70600 Slip on flanges ,cuni flanges in China.
What is EEMUA 145?
EEMUA 145 is a widely recognized specification developed by the Engineering Equipment and Materials Users Association (UK) for copper-nickel alloy flanges, fittings, and pipework, especially designed for:
- Seawater systems
- Shipbuilding and offshore platforms
- Desalination and marine engineering
The standard covers material grades, dimensions, pressure classes, and mechanical properties to ensure long service life in chloride-containing environments.
EEMUA 145 : 1986 is the standard for COPPER NICKEL ALLOY PIPING FOR OFFSHORE APPLICATIONS – SPECIFICATION – FLANGES COMPOSITE AND SOLID
Now EEMUA 234 is a new publication that combines and updates the content of EEMUA 144, 145 and 146, which have now been withdrawn. Bringing everything together into one publication means the information is more accessible to the user.
SOLID WELDING NECK FLANGE
MATERIAL : Cu-Ni 90/10, Cu-Ni 70/30
DIMENSION : EEMUA Pub. No.145 /16bar
SOLID SLIP ON FLANGE COMPOSITE WELDING NECK FLANGE 10bar and 14bar
MATERIAL : Cu-Ni 90/10, Cu-Ni 70/30
DIMENSION : EEMUA Pub. No.145
Material Options
- CuNi 70/30 (ASTM B151 C70600)
- 70% Copper, 30% Nickel
- Excellent erosion resistance and strength in seawater
- CuNi 90/10 (ASTM B151 C71500)
- 90% Copper, 10% Nickel
- Superior thermal conductivity and corrosion resistance
Composition of CuNi 90/10 (ASTM B151 C71500)
Below is the typical chemical composition for CuNi 90/10 (UNS C70600) per ASTM B151:
| Element | Composition (wt %) |
|---|---|
| Copper (Cu) | Balance (≥ 88.5 %) |
| Nickel (Ni) | 9.0 – 11.0 % |
| Iron (Fe) | 1.0 – 1.8 % |
| Manganese (Mn) | ≤ 1.0 % |
| Zinc (Zn) | ≤ 1.0 % |
| Lead (Pb) | ≤ 0.05 % |
| Phosphorus (P) | ≤ 0.02 % |
| Sulfur (S) | ≤ 0.02 % |
We supply reliable C70600 Copper Nickel (90/10) flanges that meet the EEMUA 145 standard ,We are a leading manufacturer and supplier of high-quality Copper Nickel 90/10 (UNS C70600) flanges for marine, offshore, and industrial piping applications. Our flanges are produced in accordance with EEMUA 145, ensuring compatibility, durability, and corrosion resistance in seawater and other aggressive environments.
Order Example
Product: ASTM B151 C70600 Weld Neck Flange
Type: WNRF Raised Face
Size: 4″ (DN100)
Pressure Rating: Class 150
Standard: ASME B16.5
Quantity: 40 Pieces
Certificate: EN 10204 3.1
Application: Marine Seawater Cooling Line
Related Products
- ASTM B151 C71500 70/30 Cu-Ni Flanges
- C70600 Blind Flange ASME B16.5
- C70600 Pipe and Tube (ASTM B466 / B111)
- DIN Cuni elbows
