Extruded water heatermagnesium anode Water Heater,Water container,Pre-polarization of steel structure in seawater,Gas pipe,Anticorrosion of steel and iron structure where high resistant and electrolyte(soil and water) existed. Anode Rods are available in diameters ranging from 0.500" to 2.562". Each rod has a steel core running lengthwise through its center. These anodes can be easily configured for various Cathodic Protection applications.
Water Heater Anodes are available in several configurations, with welded or unwelded Hex-Head and Anode Outlet Devices (AODs). These anodes are typically used for the Cathodic Protection of Water Heaters, Tanks and Boilers. The linked-style water heater anodes are typically for replacement applications.
Drive-in Anodes are used for the Cathodic protection of gas service entrance piping and other specialty applications. Also available with steel hex head caps.
SupplyRibbon Anodes are used in higher resistivity soils where minimum resistance to earth per unit weight of anode is important. Supplyprovides a uniform and efficient current distribution along a pipeline.
For further information, or to discuss your specific requirements, contact our sales office.
The corrosion of metal in salt or fresh water or in soil can be prevented by the use of galvanic anodes in a cathodic protection system.
Magnesium anodes are used in such systems, most commonly to protect underground gas, oil and water pipelines.
When the anode's cable is attached to a pipeline or other underground structure, a galvanic cell is created in which electrons flow from the anode to the structure, thereby protecting the structure.
The anode corrodes instead of the structure and must be replaced after a certain period of time that depends on the type of structure that is being protected, the size and grade of anodes that are used, and the corrosivity and resistivity of the surrounding soil.
In addition to pipelines, magnesium anodes are often used to protect propane, water and chemical storage tanks, areas of ships and port facilities that are not in direct contact with sea water, power plants and irrigation systems.
Standard : ASTM G-97
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Chemical compositions of cast magnesium anode (%) |
Element | High potential | AZ63B | AZ63C | AZ63D |
Al | <0.01 | 5.30-6.70 | 5.30-6.70 | 5.0-7.0 |
Zn | --- | 2.50-3.50 | 2.50-3.50 | 2.0-4.0 |
Mn | 0.5-1.30 | 0.15-0.70 | 0.15-0.07 | 0.15-0.70 |
Si (max) | 0.05 | 0.10 | 0.30 | 0.30 |
Cu (max) | 0.02 | 0.02 | 0.05 | 0.10 |
Ni (max) | 0.001 | 0.002 | 0.003 | 0.003 |
Fe (max) | 0.03 | 0.005 | 0.005 | 0.005 |
Others each | 0.05 | --- | -- | --- |
Others total | 0.30 | 0.30 | 0.30 | 0.30 |
Mg | Balance | Balance | Balance | Balance |
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Electrochemical Properties of cast magnesium anodes |
Item | Open-circuit Voltage | Close-circuit Voltage | Actual capacitance | Current efficiency |
| (-V) | (-V) | (A.h/g) | (%) |
High Potential | 1.70-1.75 | 1.57-1.62 | 1.100 | 50 |
Low Potential (AZ63) | 1.50-1.55 | 1.45-1.50 | 1.105 | 50 |
Note: Open and Close-circuit voltage is relative to Saturated Calomel Electrode (SCE) |
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Company Brief Introduction:
We are a professional anode supplier over 16 years ,mainly supply:
* Zinc anodes (ASTM B418-95 US MILL 18001K)
* Al-Zn-In anodes (GAIII)
* Magnesium anodes ( ASTM-G97)
* High silicon cast iron anodes ( ASTM-A518-3,BS1591)
Our anodes are shipped worldwide especial main to North America, Asia etc., around 5000mt per year. Our goods are regularly tested by independent third party lab in USA to keep anode continuous high quality. Our plant owns raw material resources ore, so we can supply very good price with service for you.
We can also accept customized anodes with your logo according to your drawing !
Office, Workshop, Inspection Lab: