High Potential Pipeline Cathodic Protection System

Product Description High Potential Cast Magnesium Anode / OEM AZ63C Cast Mg Anode for Cathodic Protection Cast Magnesium Anode   Product Introduction:    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.   Specifications:  Standard : ASTM G-97 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    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)   Application:     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.      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:   Company Principle: Our Belief:    Continuous Innovation. Our Spirit:     Sincerity, Unity, Dedicated, Hardworking. Our Mission: Provide most advanced products & most professional technical solution.