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China uses stainless steel for iconic Hong Kong-Zhuhai-Macau bridge to keep it corrosion free for a century

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By K Ashwin Mobile: 09920183006 Email:indianshowbusiness@gmail.com

In a global showcase of advantages of using stainless steel in the corrosion-prone coastal areas, China has built a 55 km long Hongkong – Zhuhai – Macau bridge using around 10,000 tonnes of stainless steel, among other metals. Chinese President Mr Xi Jinping inaugurated the bridge on October 23, 2018 for public use. The bridge has used over 10,000 tonnes of nickel containing duplex stainless steel reinforcement bars in construction at critical corrosive zones. This is expected to ensure a projected life of 120 years for the structure, which will be under constant corrosive attack of saline sea water. This landmark structure is a bridge tunnel system consisting of a series of three cable stayed bridges, one 6.7 km under sea tunnel, and 3 artificial islands. The bridge is an engineering marvel constructed over 9 years, at an estimated cost of $20 billion.

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