With the development of the steel industry, the demand for steel in many construction industries has gradually shifted from quantity to quality. For some open-air buildings, if ordinary steel plates are used, they will be covered with rust in a few years, even if they are Paint protection will also cause damage to the surrounding environment and the steel itself. At this time, the development of weather-resistant steel plates has brought a good solution to these problems.
In order to save production costs, many businesses do not hesitate to use ordinary steel plates to paint and artificially rust them to deceive consumers. Let's take a look at how to distinguish weather-resistant steel plates from ordinary steel plates.
1. Corrosion resistance: When weather-resistant steel plates rust in natural climate, a dense oxide layer forms on the surface of the steel, which prevents oxygen and water in the atmosphere from penetrating into the matrix and plays an oxidizing effect; while ordinary steel not only corrodes There will be no protection from the oxide layer, but the corrosion will become more serious.
2. The rust will not fall off naturally: The rust on the weather-resistant steel plate is naturally formed and sticks tightly to the surface of the base layer. Even if it is touched by hand, it will not fall off; while the weather-resistant steel plate made of ordinary steel will not fall off even if the surface is rusted and It is the same as the weather-resistant steel plate, but it will fall off easily when touched by hand. This can be easily distinguished with the naked eye.
3. Natural corrosion color: The corrosion of weather-resistant steel plates shows different colors according to the degree of corrosion and time, and these colors are caused by the oxidation of iron ions in the steel, so the corrosion will not cause damage to the surrounding ecology and environment; ordinary steel In order to have the same appearance as weathering steel, it was painted. Even if it appears the same color, the paint itself is a chemical synthetic agent with a pungent smell and has a certain impact on the surrounding ecology.
In summary, weathering steel plates and ordinary steel plates can be easily distinguished. If you can't tell the difference yourself, choose a reputable manufacturer to avoid unnecessary losses caused by being deceived. Weathering steel plates are widely used in many construction industries. In recent years, they have also seen good development in container transportation, so their prospects are still relatively broad.