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China Magnesium Anode Suppliers & Factory for Effective Cathodic Protection Against Corrosion

China Magnesium Anode Suppliers & Factory for Effective Cathodic Protection Against Corrosion

Magnesium anodes are essential components for cathodic protection, functioning as sacrificial anodes to prevent corrosion in various applications. These anodes exhibit high chemical activity and possess a negative electrode potential, ensuring a strong driving voltage for effective protection. One of the key advantages of magnesium anodes is their inability to form a stable protective film on the surface, particularly in water environments where the protective layer can dissolve easily, thereby allowing the magnesium to contribute significantly to self-corrosion. This characteristic makes magnesium anodes ideal for systems that utilize large quantities of water, effectively diverting corrosion away from critical components. As a leading supplier and factory in China, we proudly provide high-quality magnesium anodes designed to enhance the longevity and durability of your systems against corrosion
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    Product Details

    Advantage

    The most common metals used in the manufacture anodes include zinc, aluminium and magnesium.

    The magnesium anode is characterized by small density, big theory electric capacity, low potential negative polarization rate and large driving voltage for iron and steel.

    Our High Potential Magnesium Anodes and Standard Magnesium Anodes can meet your different requirements.

    Application

    Magnesium anodes are effective and affordable for anti-corrosion of buried pipelines, onshore platforms, huge boilers, and steel structures in salt and fresh water, including:

    • Hulls of ships and boats
    • Water storage tanks
    • Piers, docks, and wharfs
    • Pipelines
    • Heat exchangers
    Corroco is an approved Mg anode manufacturer for ARAMCO. Its Pure Mg, Mg-Mn, and Mg-Al-Zn anodes are widely used in pipeline and tank protection worldwide.

    Chemical Compositions of Cast Magnesium Anodes

    Element Anode Type
    High Potential AZ63B(HIA) AZ63C(HIB) AZ63D(HIC) AZ31
    Mg Bal Bal Bal Bal Bal
    Al <0.01 5.30-6.70 5.30-6.70 5.0-7.0 2.70-3.50
    Zn - 2.50-3.50 2.50-3.50 2.0-4.0 0.70-1.70
    Mn 0.50-1.30 0.15-0.70 0.15-0.70 0.15-0.70 0.15-0.60
    Si(max) 0.05 0.10 0.30 0.30 0.05
    Cu(max) 0.02 0.02 0.05 0.10 0.01
    Ni(max) 0.001 0.002 0.003 0.003 0.003
    Fe(max) 0.03 0.005 0.005 0.005 0.005
    Other Imp. Each 0.05 - - - -
    Total 0.30 0.30 0.30 0.30 0.30

    Electrochemical Properties

    TYPE ITEM Open Voltage (-V,SCE) Close Voltage (-V,SCE) Actual Capacity (A.h/LB) Efficiency %
    High Potential 1.70-1.78 1.50-1.60 >500 >50
    AZ63 1.50-1.55 1.45-1.50 >550 >55
    AZ31 1.50-1.55 1.45-1.50 >550 >55

    Parameter Specifications

    Visual Type Type Weight Kg(ib) Dimension mm(inch) [A / B / C]
    D Type 9D2 4.082(9) 69.9 / 549.3 / 76.2
    14D2 6.350(14) 69.9 / 850.9 / 76.2
    20D2 9.072(20) 69.9 / 1212.9 / 76.2
    C Type C25 2.56 Dia: 75 / L(HP): 336 / L(AZ): 325
    C36 3.7 Dia: 114 / L(HP): 202 / L(AZ): 193
    C100 10.2 Dia: 114 / L(HP): 560 / L(AZ): 536
    S Type 3S3 1.4(3) A: 96.5 / B: 76.2 / L: 119.4
    9S3 4.1(9) A: 96.5 / B: 76.2 / L: 345.4
    17S4 7.7(17) A: 101.6 / B: 81.3 / L: 457.2

    Prepackaged Mg Anode

    Corroco can also supply prepackaged Mg anode and cable connection special for our clients.

    Standard Backfill: Gypsum 75%, Bentonite 20%, Sodium Sulphate 5%.

    Product Gallery

    Bare Magnesium Anode:

    Bare Magnesium Anode 1
    Bare Magnesium Anode 2

    Prepackaged Magnesium Anode:

    Prepackaged Magnesium Anode 1
    Prepackaged Magnesium Anode 2

    Frequently Asked Questions

    What are the primary advantages of using Magnesium Anodes?
    Magnesium anodes offer a high driving voltage, small density, and large theoretical electric capacity, making them highly effective for cathodic protection of steel structures in high-resistance environments.
    In what environments are Magnesium Anodes typically used?
    They are ideal for buried pipelines, onshore platforms, water storage tanks, and hulls of ships in both fresh and salt water environments.
    What is the difference between High Potential and AZ63 anodes?
    High Potential anodes provide a higher open circuit voltage (1.70-1.78V) compared to AZ63 (1.50-1.55V), which is beneficial in high-resistivity soils where more "push" is needed to protect the structure.
    What does a prepackaged Magnesium Anode contain?
    A prepackaged anode typically includes the bare magnesium anode, a specialized cable connection, and a backfill mixture consisting of 75% Gypsum, 20% Bentonite, and 5% Sodium Sulphate.
    Is Corroco a certified manufacturer?
    Yes, Corroco is an ARAMCO-approved manufacturer. Our anodes are widely used in global pipeline and tank protection projects and meet strict international standards.
    Can Magnesium Anodes be used for heat exchangers?
    Yes, they are commonly used in heat exchangers, boilers, and other industrial water-handling equipment to prevent localized corrosion and extend the lifespan of the equipment.

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