Copper Nickel Pipe – EEMUA 234
The EEMUA 234 specification covers copper-nickel alloy grades such as CuNi10Fe1Mn (also known as 90/10) and CuNi30Mn1Fe (also known as 70/30), which are commonly used in offshore and marine applications due to their excellent resistance to corrosion, biofouling, and erosion.
EEMUA 234 is an important specification for the offshore and marine industries, as it provides a framework for the safe and effective use of copper-nickel alloy pipework systems in challenging marine environments. The specification ensures that these systems are designed, manufactured, installed, and maintained to high standards and are suitable for use in demanding offshore and marine applications.
| Material Cu-Ni 90/10 and Cu-Ni 70/30 | |||||
| Diameter Size | EEMUA 234 | ||||
| Nominal | Actual OD | 16 Bar | 20 Bar | ||
| Wall Thickness (mm), t | Theoretical Weight (Kg/M) | Wall Thickness (mm), t | Theoretical Weight (Kg/M) | ||
| Inch | mm | ||||
| Seamless Pipe | |||||
| 1/2 | 16 | 2 | 0.79 | 2 | 0.79 |
| 3/4 | 25 | 2 | 1.30 | 2 | 1.30 |
| 1 | 30 | 2.5 | 1.93 | 2.5 | 1.93 |
| 1 1/4 | 38 | 2.5 | 2.50 | 2.5 | 2.50 |
| 1 1/2 | 44.5 | 2.5 | 2.95 | 2.5 | 2.95 |
| 2 | 57 | 2.5 | 3.83 | 2.5 | 3.83 |
| 2 1/2 | 76 (76.1) | 2.5 | 5.17 | 2.5 | 5.17 |
| 3 | 88.9 (89) | 2.5 | 6.07 | 2.5 | 6.07 |
| 4 | 108 | 3 | 8.85 | 3 | 8.85 |
| 5 | 133 | 3 | 10.95 | 3 | 10.95 |
| 6 | 159 | 3 | 13.14 | 3.5 | 15.29 |
| 7 | 193.7 (194) | 3 | 16.07 | 3.5 | 18.70 |
| 8 | 219 (219.1) | 4 | 24.17 | 4.5 | 27.12 |