... ,fence of railway and etc. in many countries, barbed razor wire is welcomed by army and police.TYPES OF BLADE(Concertina Razor Barbed Wire) ... BTO-10.12.18.22.28.30Cross typeApplication of Concertina Razor Barbed Wire: Military affairs, prison, government, bank, ship( ... , autobahn, railway and border of the fence. Usage: concertina, flat, beeline, welded razor mesh and etc.. Concertina Razor Barbed Wire