Magnesium alloy sacrificial anode
Zinc alloy sacrificial anode
Aluminum alloy sacrificial anode
Magnesium ribbon 
Zinc belt
Standard for Electrical Insulation of Cathode Protection Pipes of SY 0086-2003T
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Standard for Electrical Insulation of Cathode Protection Pipes of SY 0086-2003T
Standard for Electrical Insulation of Cathode Protection Pipes of SY 0086-2003T