Erection of the steel structural truss for the No. 4 pipeline corridor overpass in Nantong Blue Sea New Materials project

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On December 14, the construction site of Pipe Gallery No. 4 for the Nantong Blue Sea New Materials project at the Fifth Branch reached a key milestone: a steel structural truss measuring 33.5 meters in length, 12.3 meters in width, 2.94 meters in height, and weighing 68 tons was successfully lifted across the main road within the factory complex with the close coordination of two cranes, and was precisely placed on the supports of the pipe gallery. This marked a significant breakthrough in the plant’s process and thermal pipeline systems, laying a solid foundation for the overall connection of energy and materials between various units. It is reported that the steel structural truss lifted this time serves as the \"vital link\" in the plant’s material transportation and energy supply system for the Nantong Blue Sea New Materials project. Among them, the process piping network includes the connection pipes from raw materials to the production units, from the production units to the intermediate product storage areas, from the intermediate product storage areas to the product storage areas, and from the intermediate product storage areas to downstream production units ； The utility pipeline network includes heating pipelines, water supply and drainage pipelines, hot and cold water pipelines in heat exchange stations, as well as flare pipelines, and it serves as an essential foundation for ensuring the safe, stable, and efficient operation of the facility. To minimize the construction timeline and reduce risks associated with work at heights, the project team carried out thorough planning and coordination, adopting a construction method that involves overall assembly on the ground followed by a single lift. For this lifting operation, a 700-ton truck crane was used as the main crane, with a 200-ton truck crane serving as the auxiliary crane. The two cranes worked together to lift the load simultaneously. By strictly following the lifting plan and adhering to the requirements for safety procedures, the 68-ton steel structural truss was lifted into place in one go, allowing for an accurate alignment. The entire process was smooth and orderly, demonstrating the project team’s excellent technical skills and efficient organizational capabilities.