Hot-dip galvanizing is more effective for both corrosion resistance and durability. Among the most effective solutions to counteract metal oxidation is galvanizing, a surface treatment that creates a protective barrier capable of isolating the material from external agents and, in the case of hot-dip galvanizing, also offering active cathodic protection. The zinc bonds metallurgically with the steel surface, forming a series of strong zinc-iron alloy layers. What is Galvanizing? In its simplest form, galvanizing refers to the application of a zinc. Among the most common options, HDG cable trays (Hot-Dip Galvanized) and Galv cable trays (Electroplated or Cold-Galvanized) stand out.