Primetals Technologies recently received the final acceptance certificate for the replaced laminar cooling section installed at the 2050mm hot strip mill in the Shanghai, China production site of Baoshan Iron & Steel Co Ltd. The new laminar cooling enables Baosteel to extend its product range up to a thickness of 19 millimeters for high toughness line pipe grades at low temperature, and dual phase and multi-phase steel grades in a thickness range of 2 to 8 millimeters. The project was executed remotely due the ongoing pandemic conditions. After the revamp, the stability and uniformity of cooling water have been significantly improved. In addition, the new laminar cooling technologies provides a high quality technical platform for new steel grades development in the futureThe 2050mm hot strip mill has a design capacity of 5.9 million tonnes per year. It produces strip with thicknesses between 1.2 -25.4 millimeters at a width of 1,900 millimeters. The length of the cooling line amounts to 140 meters. A total water flow of 38,000 cubic meters per hour can be achieved.Primetals Technologies was responsible for basic and detail engineering of all mechanical and hydraulic equipment for the entire laminar cooling, including the turbo laminar section, the laminar section and trimming section, the swiveling unit, steel structure, fixed guide, cross spray, overhead tank including steel structure, Interconnecting piping, and was responsible for the supply of the entire laminar cooling header, swiveling unit, cross spray, overhead tank and steel structure. Advisory services for installation and commissioning as well as training of the operation and maintenance personnel were also performed by Primetals Technologies.