Since the inception of the desalination industry, the search for more corrosion resistant materials of construction has been the number one priority. Originally, this search was concentrated in the metallic materials field, much of it devoted to heat exchanger tubing. Modern technology has proven that by modifying the environment many metal alloys will perform satisfactorily. Modification of the water by pretreatment, whether it is by deaeration, pH adjustment, corrosion inhibitor addition or other means, is generally expensive. However great the cost of heat exchange tubing may be, it is only a fraction of the cost of the materials that go into a desalination plant.

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