According to Centro Inox, on 7 July 2007 at Pedra Majore (Sedini), in the province of Sassari (Sardinia), the new drinking water plant was opened. This is one of the most advanced plants of this kind in Italy from the viewpoint of water treatment process complexity and water quality guarantee, with the potential capacity of 23 million m3/yr. The plant processes the raw waters of the river Coghinas. These waters, to be transformed into drinking water, require several complex stages of chemical-physical treatments, which take place on three identical parallel process lines. In addition, the plant includes two treatment lines for the resulting mud. Stainless steel has been extensively used in this plant, particularly in pipe manufacturing. About 110tns of EN 1.4404 (AISI 316L) stainless steel have been used for the pipes, with diameters ranging from DN 50 to DN 1000, and another 20tns of the same kind of steel have been used for manufacturing the underwater electro-mechanical equipment.
