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Any fencing made from galvanized steel can be considered galvanized fencing. Chain link fences are the most common type of galvanized fencing, though other variations, though less commonly used, do exist. A fence is galvanized when the steel used to make the parts of the fence is put through a process called galvanization, in which a protective coating is affixed to the steel through a chemical process. The coating is usually zinc, though aluminum can sometimes be used. The coating helps prevent the fence from rusting or otherwise corroding, making the finished product a good choice for external fencing in moist climates.
Chain link fences are the most common type of galvanized fencing, and examples of this type of fence can be seen in just about any urban area. Galvanized steel posts are sunk into concrete footings, and chain link sheets are stretched between the posts and affixed to them. This version of galvanized fencing is a tough, reliable perimeter fencing choice that can keep out unwanted guests — even more so if barbed wire is strung at the top of the chain link fence — and it can be manipulated into different shapes and sizes to accommodate a range of purposes. Gates can be added to these fences fairly easily, and the fence can be formed into room shapes, baseball backstops, or other practical shapes.
Wire fencing is lightweight galvanized fencing that is great for use in the garden or other light uses. This type of fencing is often made from thin steel wire that is galvanized either before or after welding, and the finished product is rolled up for easy transport. Since it is lightweight, wire fencing should not be used for any weight-bearing purposes beyond allowing creeping vines or plants to grow on them. This fencing can be stapled or nailed to wooden posts to create a temporary enclosure, or even a more permanent enclosure for smaller animals such as chickens. It can also be used for creating a protective wrap around plants in danger from being eaten by animals.
Some types of pool enclosures are made from galvanized fencing. The fence may be a chain link fence, or it may take the form of a steel fence with vertical bars providing security. The shape of the steel does not have any effect on the galvanization process, other than making it more cumbersome during the process. A steel fence is usually broken into smaller parts called panels, which makes the galvanization process much easier.