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nVent ERICO Cadweld connections are the accepted method of attaching Cathodic Protection leads to pipes, tanks, and structures.
Cadweld connections weld the conductors and the structure to be protected so no galvanic corrosion can occur at the interface.

nVent is the pioneer of the Cadweld Exothermic Welding Process for permanent Cathodic Protection connections. Specifying the Cadweld Process in your construction plans will dramatically extend the lifespan of infrastructure systems. Cadweld connections are made with a semi-permanent graphite mold, which holds the conductors to be welded. Weld metal (a mixture of copper oxide and aluminum) is dumped into the top of the mold. The mold is covered and the weld metal ignited. The exothermic reaction produces molten copper, which results in a permanent, high conductivity connection.