Concertina Mesh Coil

Concertina wire or Dannert wire is a type of barbed wire or razor wire that is formed in large coils which can be expanded like a concertina. In conjunction with plain barbed wire (and/or razor wire/tape) and steel pickets, it is most often used to form military-style wire obstacles.It is called concertina wire, named after the musical instrument and its expanding and contracting bellows. It resembles barbed wire that's commonly used to corral cattle, but it comes in flat coils that can quickly expand like its namesake, making it easier to store, transport and install.These are usually composed of Five wires placed on parallel lines with at least 100 mm distance from each other. To compute the total wire length for this, use the following formula: Linear wire length = Fence perimeter length x 5 rows .