The Doepker Galvanized Super B is the industry-changing answer to corrosion: the entire main deck and frame are hot-dipped in 850°C molten zinc, creating four layers of galvanized protection, two of which become integral to the steel itself. The result is corrosion resistance that surpasses aluminum while keeping full steel strength, backed by a 10-year galvanized coating warranty. It comes in 30 or 50 series with a combined 110,000 lb distributed load rating across the train.