The strength of the column is the most important for the pressed spear fence. In particular, pressed spear fences with larger spans are even more important, and the strength of the face tube or cross bar is relatively reduced across the span.
A lot of fence nets have been shaken and unstable after being installed. This is basically the problem of columns. For example, the fence column itself is not enough thickness and strength is not enough. Another important thing is that the columns are not installed properly and have not been properly fixed.