Copper Nickel (CuNi) Flanges

Copper Nickel Flanges are used in piping systems where high resistance to corrosion in seawater and other corrosive materials is required, such as in the marine, oil and gas, power generation, and desalination industries. 

Stirlings stocks 90/10 Copper Nickel Flanges manufactured to European Standard DIN 86037 / EHN9402/150.

70/30 Copper Nickel Flanges are available upon request via indent. 

Copper Nickel Flanges are available in Pressure Ratings 10 Bar and 14 Bar. 

Stirlings supplies Table E Galvanised Backing Flanges in sizes 20.00mm (0.5 inch) to 610.00mm (24 inches). Everything currently in stock is specified in the table below.  

For alternate Copper Nickel Flange types, please contact us.

● Stocked Item ○ Market Available

Anything not currently in stock/Market Available can be obtained via indent. 

Outside Diameter
Wall ØA H C ØX R1 WT Spec Avail
of pipe ØD THK           Kg    
nominal actual e mm mm mm mm mm mm /piece    
inch mm                  
                    FLCNWN
0.5 20 1.5 45 28 5 22 3 0.08 DIN 86037 ○
0.75 25 1.5 58 40 5 27 3 0.14 DIN 86037 ●
1 30 1.5 68 40 5 32 4 0.24 DIN 86037 ●
1.25 38 1.5 78 40 5 40 4 0.26 DIN 86037 ●
1.5 44.5 1.5 88 45 6 46.5 4 0.42 DIN 86037 ●
2 57 1.5 102 45 6 59 5 0.53 DIN 86037 ●
2.5 76.1 2 122 45 6 78 5 0.64 DIN 86037 ●
3 88.9 2 138 50 7 91 5 0.86 DIN 86037 ●
4 108 2.5 158 50 7 110 5 1.10 DIN 86037 ●
5 133 2.5 188 50 7 135.5 5 1.50 DIN 86037 ●
6 159 2.5 212 50 9 161.5 5 2.00 DIN 86037 ●
7 193.7 2.5 242 50 9 197 5 2.30 DIN 86037 ○
8 219.1 3 268 50 9 222 5 2.70 DIN 86037 ●
10 267 3 320 50 9 270 5 3.40 DIN 86037 ○
12 323.9 4 370 50 11 327 7 4.60 DIN 86037 ○
14 368 4 430 50 11 371 7 6.20 DIN 86037 ○
16 419.1 4 482 50 12 422 7 7.50 DIN 86037 ○
18 457.2 4 530 50 12 460 7 9.00 DIN 86037 ○
20 508 4.5 585 50 12 511 7 10.65 DIN 86037 ○
24 610 5 685 60 14 613 9 14.90 DIN 86037 ○