On September 1, 2019, ZXTG Special Steel Group provided the world`s first road-rail dual-use cable-stayed bridge: all the cable-stayed steel cables produced by the Shanghai-Tong Yangtze River Bridge were completed and rolled off the assembly line. This marks the 2000MPa bridge cable supplied by ZXTG Steel realized the world's first successful application.
At present, all bridges with extra-long spans of more than one kilometer are cable-stayed bridges or suspension bridges. Large-scale bridge construction requires a large investment and a complex service environment. There are strict requirements on the strength index, torsion index, fatigue performance, and corrosion resistance of the bridge cable steel wire.
In order to meet the requirements of bridge construction and ensure absolute safety performance, ZXTG's JSXC special steel and QDTG special steel's own equipment and technology have successfully developed ultra-high-strength galvanized steel wire for bridge cables. JSXC uses ultra-high clean smelting technology, large-section controlled rolling technology, and green and environmentally friendly online EDC water bath toughening heat treatment technologies. QDTG uses special steel high-clean smelting and homogenization solidification technology, and double method special steel production technology. And QWTP wire offline salt bath toughening technology, has developed 1860Mpa, 1960Mpa, 2000Mpa grade ultra-high-strength bridge cable galvanized steel wire, of which 1860Mpa, 1960Mpa grade bridge cable steel has been successfully applied The construction of iconic super-large bridges such as Humen Second Bridge, Yangsigang Bridge, Wufengshan Yangtze River Bridge, Shanghehang Bridge, etc.
The 2000MPa bridge cable steel supplied by ZXTG was applied to the Shanghai-Tong Yangtze River Bridge, which not only realized the world's first application of 2000MPa bridge cable steel in super large bridges, but also realized the first use of Φ7.0mm-2000MPa in China The breakthrough of stay cables marked a new leap in bridge construction in China, and the field of materials for bridge construction has entered a new era of vigorous development.