Zinc grounding rod is mainly used in the grounding system of petrochemical,natural gas,transformer substation,railway and civil aviation facilities. There are two typical applications of the rod: 
1. As a substitution for copper or copper coated power grounding rods in order to avoid bimetallic corrosion of associated ferrous structures.
2. In mitigation of voltages which may be introduced in pipelines by adjacent overhead AC power lines. Pipelines may be ground bed via zinc electrodes without attendant disruption of pipeline cathodic protection