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Steel fittings in a variety of formulations have been liquidtight raceway products of choice since the early days of electrical distribution. When these products have been galvanized, a thin zinc coating offers corrosion resistance for use in many outdoor and exterior applications where non-galvanized steel might otherwise rust through. But electrical wiring requires extra protection in more significantly corrosive environments. So, contractors need to consider materials that offer more advanced protection in settings where chemicals, salt spray and other damaging substances are common.