Welded wire security fence is a welded-wire physical security perimeter barrier for high security level fence project. Compared with other welded wire fences, the welded security fence has higher strength, rigidity and security to avoid people climbing. The surface treatment of the fence includes hot-dip galvanization and PVC coating. Now, welded wire security fence has been widely applied to prison, military, airport, residential areas, recreational places, public buildings, industrial facilities, schools, and playgrounds.