... /sq.m 4,Resistence:75-110sq.mm 1,Razor wire(factory) 2,Material:steel wire and blade or iron blade 3,Zinc:60g ... result of frightening and stopping to the aggressive perimeter intruders. Razor wire is divided into spiral, straight line and crossed spiral types ... ±0.052.5±0.165±221±1101±2Barbed Tape Concertina (CBT);Barbed Tape Obstacle (BTO) Standard materials are either galvanized or ...