From the experiment result of metal specimens buried in underground, discussing the influence of AC stray current on cathode protection by using galvanic anode method.

This paper introduces a method in which a sacrificial anode with special shape was added between casings and pipeline for solving the corrosion problem in the special environment.

To lead anode plate thickness uniformity, we proposed the dynamic lost heavy method realization lead anode plate casting method. It increased the precision of casting the lead anode plate.