Rahavard Zob Iranian
Manufacturer of Sacrificial Anodes in Iran
RahavardZob can supply a vast range of agnesium sacrificial anodes to the high purity specification . Anodes can be manufactured to any reasonable size or design and tested on the RahavardZob`s laboratory to ensure adherence to the standard specifications :
Buried anodes usually supplied prepackaged in a cotton bag surrounded by a specialchemicalackfill . The environment provided by the backfill helps achieve a more uniform current output and dissolution rate and lowers the resistance to the electrolyte .anodes used in low resistivity soils (for example clay ) are often supplied un-pakaged .
Backfill :
1- Backfill mix (A) , is useful n low soil moisture areas and utilizes the moisturholding characteristic of the bentonite clay .
2- Backfill mix (B) , is usefil with magnesium or zinc in very wet marshy soils to prevent rapid migration of backfill from anode surface .
3- Backfill mix (C ) , with low resistivity , is useful in high oil resistivity reas to reduse the anode resistance to earth .
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Backfill Composition |
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Materials |
Type |
Type |
Type |
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Gypsum % |
25 |
50 |
75 |
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Bentunite % |
75 |
50 |
20 |
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Sodium suiphate |
-- |
-- |
5 |
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Approx Resistivity in ohm-cm |
250 |
250 |
50 |
RahavardZob`s magnesium anodes usually are produced with two chemical composition types : Standard & High Protential (table 2) .
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Elements |
Al |
Zn |
Mn |
Cu |
Ni |
Fe |
All others |
Mg |
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Standard |
5.3 – 6.7 |
2.5 – 3.5 |
0.2 – 0.5 |
0.02 (max) |
0.001 (max) |
0.005 (max) |
0.01 (max) |
Balance |
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High Protential |
0.01 (max) |
0.03 (max) |
0.9 – 1.2 |
0.02 (max) |
0.001 (max) |
0.3 (max) |
0.3 (max) |
Balance |
Please note that these are our standard chemical composition . Other can be cast to cutomer requirements.
The must used specifications for magnesium anodes are : ASTM B 275, ASTM G7 , IPS-M-TP-50/3 , BS7361 , ASTM A 283 grade C .
Electrical properties :
1- Open circuit potential negative volts (Cu/CuSO4 electrode ):
a)Standard : 1.6 V
b)High Potential : 1.75 V
2- Current efficiency (min) :
a) Standard :58 % V
b) High potential 50 % V
3-Conumption rate 9max ) :7.3 Kg/amp – year
4- Energy capability (min) :1200 amp – hr/Kg
Pipeline Anode :
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Hull Anode:
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Also RahavardZob has ability to produce other shapea and sizes in according to customer`s requirments .
Our other products :
- Aluminum Anodes
- Magnesium Anodes
- Zinc Earthing Cell
- Transformer Rectifier
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Accessories Equipment including:
- Bond Box
- Test Point
- Current Control Box
- Marker
- Half Cell (Permanent/portable)
- Splicing Kits
- Earthing Equipment
- Thermit Weld Equipment
- Handy Cap
- ETC
