Dry goods cargo containers travelling by sea, road, and rail, safely convey and protect their contents while presenting good appearance over long periods without maintenance or refurbishment. Such containers are subject not only to corrosion problems associated with ferrous metals but also to mechanical damage from container handling equipment. Over the past three decades the coatings industry has developed many excellent alternative systems and more recently the development of modified zinc phosphate primers has provided new economically viable possibilities for the container manufacturer, giving corrosion inhibition of a much higher order than previously achieved.