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October 19, 2023
3. The third stage of the long rust of the steel plate: the real weathering steel has a clear and dense rust core layer, and the rust points are tightly stuck together to form a protective layer, and the rust is difficult to erase by hand; The ordinary steel plate rusts more, and even the whole rust spalling and rusting through. The weathering steel is reddish-brown, while the steel plate is reddish-brown.
Second, the curtain wall is installed with weathering steel
The modern weathering steel building curtain wall (3MM) is similar to the current aluminum exterior wall installation, and the thick layer (5MM or more) weathering steel curtain wall mostly uses the unit external hanging method. Landscape and some simple devices, the direct use of welding technology should pay attention to the following points:
1. Corrosion of welding points: the oxidation rate of welding points must be the same as that of other materials, requiring special welding materials and technology.
2. Water corrosion: weathering steel is not stainless steel. If there is water in the concave of the weathering steel, the corrosion rate will be faster, so it must be drained.
3. Salt-rich air environment: Weathering steel is more sensitive to salt-rich air environments such as Hawaii. In this environment, the surface coating may not be able to prevent further oxidation inside.
4. Fading: The rust layer on the surface of weathering steel will cause the surface of objects near it to rust.
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