Galvanization is the process of applying zinc coating on steel surfaces, mainly to prevent rusting or corrosion. This technique is used on wire meshes for a variety of applications of the finished product. From beautification of the fence to heavy industrial area uses, it is treated as a separate category of the product and is available in different opening sizes and quality.
There are two basic types of the product - Galvanized before Welding (GBW) and Galvanized after Welding (GAW).
In this type of wire mesh, the wire used in the manufacturing process is galvanized before welding of the joints. In this manner, the welding material is visible over the steel wires. This method is generally more cost-effective and costs less to the customer.
In the process, the entire wire mesh (with welding) is immersed in a galvanization tank for the specified period. Here, the entire mesh along with welding metals is coated with the protective layer. This process is more rigorous and costly, but the product is better resistant to external forces and corrosion. Also, wire meshes with small-diameter holes are unsuitable for this process, as the holes also may be clogged with the galvanization compound.
The extra protection of the galvanization process enables the usage of the mesh in a variety of applications apart from fencing enclosures. Some of the important ones are discussed below.
It is widely used as a barrier for windows in residences. These are meant for stopping insects and other undesirable elements from entering the rooms. These wire meshes have openings which are smaller than the insect sizes, resulting in blockage of entry. Moreover, the room's aesthetic is undisturbed as the colors of the screens are repaint-able according to the room color also.
Wire meshes of fine diameters are an integral part of the construction industry. These sturdy, galvanized screens are used as a holding enclosure for setting the concrete mixture, both in vertical and horizontal positions. In many cases, these meshes are left to fuse with the concrete for extra strength. This is one example of the various other applications of the galvanized wire screens in building projects.
Another interesting application of a galvanized wire mesh is its involvement in the formation of stone boulders or barriers. These may be used for slowing down the natural land erosion process besides the rivers or sea. Strong, specially treated wires meshes are used for this purpose; they encase concrete blocks inside to absorb the water's force, thus slowing down the erosion process.