On August 6, the seawater cooling project of Jizan Industrial City, Saudi Arabia, which was undertaken by China Harbor and constructed by the Fourth Navigation Bureau, made significant progress. The project successfully completed the installation of a 6.6-kilometer-long, 3.5-meter-diameter high-density polyethylene water intake pipeline, setting a new record for the largest diameter of its kind in the world that has been installed on the seabed.

This submarine pipeline, known as the "Red Sea Dragon", will provide an average of nearly 3 million tons of cooling water per day for the Jizan Industrial City Heavy Industrial Zone, becoming an important infrastructure to support the development of local industries. The project team overcame special environmental challenges such as high salinity and strong corrosiveness in the Red Sea, and innovatively used high-density polyethylene materials, which perfectly adapted to the complex marine environment with excellent corrosion resistance and flexibility.

During the construction process, the project team overcame a number of technical difficulties. Through the development of adaptive fusion welding ring technology, the welding error is controlled within 1 mm; The "airbag + sacrificial sling" process is adopted, so that the pipeline sinking accuracy is as high as 99%. These technological innovations not only ensure the quality of the project, but also improve the construction efficiency by 30%.

This project is another masterpiece of "Made in China" to the international market, marking an important leap from "technological breakthrough" to "large-scale application" in the field of submarine pipeline installation technology for Chinese enterprises. After the completion of the project, it will effectively promote the development of Jizan Industrial City, inject new momentum into Saudi Arabia's "Vision 2030", and become a new model of infrastructure cooperation between China and Saudi Arabia.(This article is from the official website of Jiandao www.seetao.com it must not be reprinted without permission, otherwise it will be investigated, please indicate the reprint of Jiandao.com + original link) See the core technology column editor/Gao Xue of Jiandao.com