1, high-performance weathering steel plate and fire-resistant steel plate can reduce the maintenance cost of steel structure, and provide a new solution for solving the fire and corrosion prevention problem of exposed and unprotected steel structure, such as high-voltage power tower;
2,Fire-resistant weathering steel plate has basically the same fabrication and installation process as conventional steel, and the design method is also the same as that of ordinary steel structure, but more experimental verification is needed;
3,High-strength weathering-resistant steel plate has been widely used in bridge engineering, need to study the design theory and method;
4,Fire-resistant weathering steel plate can also be used in floor slabs.
Weathering-resistant steel plate has good atmospheric corrosion resistance, although the application of weathering-resistant steel plate of the initial investment cost is slightly higher than the plain carbon steel, but with the surface of the plain carbon steel spray anticorrosive coating and other methods of comparison, the plain carbon steel version of the late maintenance costs are weathering-resistant steel 1.5-2 times. Therefore, weathering steel can reduce environmental pollution, belongs to the energy saving and emission reduction key promotion technology. Most of the domestic weathering steel is painted and used, and its original design intention of no painting and "rust to prevent rust" has not been maximised. In the harsh service environment, weathering steel is difficult to densify the rust layer, and in the early service, the appearance of the steel structure corrosion presents uneven and other related problems, so the application environment of weathering steel and surface treatment technology has been plagued by the application of weathering steel.
