How to prevent gabion mesh from rusting?

Gabion mesh is made of many low-carbon steel wires with good toughness. If it is immersed in water for a long time, it will rust and gradually lose its function. So how to prevent gabion mesh from rusting? Let's take a look.

The majority of gabion mesh is made of low-carbon steel wire. Depending on the project requirements, we can choose the duration of its corrosion resistance:

Electro-galvanized (also called cold galvanizing), its coating weight is about 10 grams. This coating has very poor corrosion resistance; it will rust even with slight moisture in the air. I generally do not recommend using this type.

Ordinary hot-dip galvanized, its coating weight is generally between 30-55 grams. This material can prevent the product from rusting for up to 2 years. It is generally used in slope protection and bank protection projects. A layer of soil is laid on top of the gabion mesh, and then some vegetation will grow. After two years, through rain and soil penetration, the gabion mesh will be firmly fixed in place. Even if the gabion mesh has rusted, it will not affect the project. High-temperature hot-dip galvanizing, with a coating weight typically exceeding 200 grams, can prevent rusting for up to 20 years, even in water (pH 7). This is the most widely used type of coating.

Galfan (also known as zinc-aluminum alloy) offers three times the corrosion resistance of high-temperature hot-dip galvanizing. This coating requires high-quality products and is relatively more expensive.

Furthermore, PVC or PE can be added on top, providing an additional layer of corrosion resistance and making the gabion mesh more aesthetically pleasing and durable.

The above explains methods to prevent rusting in gabion mesh. We hope this article has been helpful. For more information about gabion mesh, please continue to follow us.