ABSTRACT
Istanbul Water and Sewage Authority (ISKI) started a project for wastewater collecting and refining system. CET Construction Co is awarded the contract to lay concrete pipes of 2,000 mm ID, including the sections of Kagithane Left Shore Collectors, North Halic Collectors and Tunnels, Kabatas to Baltalimani Tunnels, Kemerburgaz Tunnels, Baltalimani Wastewater Refining System, Baltalimani Discharge Line and Stream Improvement, North Halic Secondary Collectors and Tarabya Collectors and Tunnels.
