assigning the latter term to what is commonly known as razor wire. In contrast to the double-helical construction of concertina wire, as shown being deployed by soldiers in the image, razor wire, or less correctly constantine wire, consists of a single coil of wire with projecting teeth periodically along its length.
Concertina wire is supplied typically in single coils or crossed spiral coils. We can produce razor type barbed wire in concertina coils or straight lines. Blade types and specifica