The Second Dongting Lake Bridge refines 'Made in China'

Updated 2017-07-27 09:54:19 CGTN
The Second Dongting Lake Bridge under construction. </p><p>These cables need to support the 40,000-ton deck throughout the bridge's estimated 100-year lifetime. For a 1,480-meter-long bridge, the main cables must be made to the highest possible production standards. 760 kilometers away, Wuxi, Jiangsu, is the place where the vital steel wires forming the cables are produced.</p><!-SSE NEWSADSTART SSE->
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      <!-SSE NEWSADEND SSE-><p>The steel rod has a maximum tensile strength of 1,860 MPa. No reduction in this strength is permitted, throughout the 200 meters the steel wires are being reduced in diameter. The wire is steeped in a metallic liquid at 450 degrees Celsius, and it's coated with a thin anti-corrosive that will protect it from adverse environmental conditions for 100 years.</p><div style=

The wires are steeped in a metallic liquid at 450 °C.

In the cable strand production workshop, there are 127 distribution frames. Each steel wire will follow a unique route to the assembly area. After that all 127 strands will eventually meet at the convergence frame, and be bundled to make a hexagonal cable.

Every one of the 172 hexagonal strands is formed of 127 wires.

Each steel wire will have its unique position on the bridge. Every one of the 172 hexagonal strands is formed of 127 wires. This is how the key cables are made so that each of them is capable of bearing a 90,000-ton load. After six hours of work, a 2,600-meter-long cable strand has been completed.

Each steel wire has its unique route.

This meticulous work, all made in China, ensures that a state-of-the-art infrastructure will be made successfully and of the best quality.

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