Introduction
A range of extruded anodes for the protection of buried pipelines. The anodes are available in two compositions, corresponding to high and low potential. The high potential conforms to alloy MI and the low to ASTM AZ31 B.
The anodes are manufactured by extrusion process, thereby ensuring no porosity, close dimensional tolerance and minimum segregation of the chemical elements. The anodes are round resulting in uniform consumption.
| Type |
Potential |
Al |
Mn |
Zn |
Fe |
Cu |
Ni |
Other |
Mg |
| Disa Hi |
-1.7V |
0.01 |
0.5 - 1.3 |
- |
0.03 |
0.02 |
0.001 |
0.05 |
Balance |
| Disa Lo |
-1.5V |
2.5 - 3.5 |
0.2 - 1.0 |
0.7 - 1.3 |
0.003 |
0.01 |
0.001 |
0.05 |
Balance |
Where only one value of composition is given, such values are maximum.
Potentials are with respect to a copper/copper sulphate reference electrode.
Other shapes and dimensions are available on request.
DISA
CODE |
Anode |
Bag and Backfill |
Total
Weight
kg |
Length
La
mm |
Diameter
Da
m |
Weight
kg |
Length
Lb
mm |
Diameter
Db
m |
Weight
kg |
| Hi/Lo 1.4 |
141 |
85 |
1.4 |
241 |
145 |
3.1 |
4.5 |
| Hi/Lo 2.3 |
238 |
85 |
2.3 |
338 |
145 |
4.2 |
6.5 |
| Hi/Lo 3.6 |
364 |
85 |
3.6 |
465 |
145 |
5.5 |
9.1 |
| Hi/Lo 4.1a |
340 |
95 |
4.1 |
440 |
155 |
5.8 |
9.9 |
| Hi/Lo 4.1b |
726 |
65 |
4.1 |
826 |
125 |
7.6 |
11.7 |
| Hi/Lo 5.1 |
265 |
120 |
5.1 |
365 |
180 |
6.2 |
11.3 |
| Hi/Lo 7.7 |
639 |
95 |
7.7 |
739 |
155 |
9.2 |
16.9 |
| Hi/Lo 10.0 |
520 |
120 |
10.0 |
620 |
180 |
9.7 |
19.7 |
| Hi/Lo 14.5a |
1203 |
95 |
14.5 |
1303 |
155 |
15.8 |
30.3 |
| Hi/Lo 14.5b |
754 |
120 |
14.5 |
854 |
180 |
13.0 |
27.5 |
| Hi/Lo 18.2 |
1510 |
95 |
18.2 |
1610 |
155 |
19.3 |
37.5 |
| Hi/Lo 21.8 |
1133 |
120 |
21.8 |
1233 |
180 |
18.2 |
40.0 |
| Hi/Lo 22.7 |
1180 |
120 |
22.7 |
1280 |
180 |
18.9 |
41.6 |
| NOTE: |
(1) |
Weight of Anode is Variable |
| |
(2) |
Length and Diameter of Anode is Variable |
| |
(3) |
Cable Size is Variable |
|
