Hangzhou Bay Bridge fluoridated carbon coating for its early glorification

May 28, 2025

According to the command of the Hangzhou Bay Cross-sea Bridge Project, the longest cross-sea bridge in the world is expected to be officially opened in the first half of this year. At the same time, the Olympic torch that is scheduled to pass through Hangzhou in May this year is expected to pass through the Hangzhou Bay Bridge. The Hangzhou Bay Sea-Crossing Bridge, which runs from Jiaxing City to Haikou, Zhengjiasi, spans the trumpet-shaped Hangzhou Bay and ends at Ningbo City’s Shuixiwan, a total length of 36 kilometers, which exceeds the Chesapeake Bay Bridge and the Bahrain Road embankment in Saudi Arabia. Bridge is the longest cross-sea bridge in the world. On June 26 last year, the Hangzhou Bay Cross-Sea Bridge officially went through. The completed Hangzhou Bay Bridge is a two-way, six-lane road with a total length of 36 kilometers and a design speed of 100 kilometers per hour. Upon completion, it will shorten the distance between Shanghai and Ningbo by 120 kilometers. Originally driving from Shanghai to Ningbo, it was necessary to take the Shanghai-Hangzhou Expressway and then take the Hangzhou-Ningbo Expressway, winding an “L”-shaped route. If driving at a speed of 80 kilometers per hour, drive for about 4 hours. After the completion of the cross-sea bridge, it will save an hour and a half from coming and going.
The bridge has a total of more than 7,000 piles of various pile foundations, and more than 4,000 steel piles have been drilled in the water area. Its project scale has broken the record of domestic bridge construction history. In terms of engineering technology, the bridge construction has also created a number of world or domestic first. In addition to its length in the world currently under construction and built cross-sea bridges ranked first, in the country for the first time clearly put forward the durability requirements of the design life of more than or equal to 100 years; erection of transport weight from 900 Ton increased to 1,430 tons, ranking the first in the world so far; the first successful implementation of the "secondary tensioning technology" in China; the use of a whole pile of spiral steel pipe piles, the maximum diameter of 1.6 meters, the maximum length of a single pile 89 meters, The length of the whole spiral steel pipe pile ranks the first among the bridge steel pipe piles at home and abroad; in the construction of bored piles in the mudflat area, the first time there is a safe construction process with controlled deflation. This construction technology is in the world. It is the first of its kind in similar geographical conditions.
Since the completion of the bridge on June 26 last year, the Hangzhou Bay Cross-sea Bridge Engineering Command immediately commenced the construction of the follow-up projects for the remaining projects of the main project, the bridge deck pavement project, and the coating project. According to the China Chemical Society's Fluorine Coatings Committee, most of the paints used in construction of the Hangzhou Bay Cross-sea Bridge are fluorocarbon resin coatings with super weather resistance. The supplier of fluorine coatings includes Ningbo Science and Technology Park Dongsheng Technology Development Co., Ltd. , Dalian Zhenbang Fluor Coatings Co., Ltd., Beijing Aerospace Material Co., Ltd. and many other well-known domestic enterprises, in providing excellent protection at the same time, fluorine coatings also provide colorful Hangzhou Bay Bridge project Decorative effect, as shown above.

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