Compared to welded wire fence or chain link fence, barbed wire or razor wire is widely used for more security. It can be found in airport,prison, highway side, animal feeding fields and war zones. Barbed wire is easy to install, it is only need the tie wire, posts and nails, accessories. Sometimes, barbed wire services as assistance for security and protection with chain link fence, welded wire fence or expanded metal fences.
To prevent humans crossing through or over barbed wire fences, many prisons and other high-security facilities fences with razor wire, a variant which instead of occasional barbs features near-continuous cutting surfaces sufficient to injure unprotected persons who climb on or over it.
In highway, generally on both sides of highway, the barbed wire is widely used. It is very dangerous to get across the highway when the cars are driving in high speed. So the barbed wire can be used for the guarantee.