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  2. Barbed wire - Wikipedia

    en.wikipedia.org/wiki/Barbed_wire

    Barbed wire, also known as barb wire, is a type of steel fencing wire constructed with sharp edges or points arranged at intervals along the strands. Its primary use is the construction of inexpensive fences , and it is also used as a security measure atop walls surrounding property.

  3. Hampshire gate - Wikipedia

    en.wikipedia.org/wiki/Hampshire_gate

    A wire gate, western United States. A Hampshire gate, New Zealand gate or wire gate is a type of agricultural gate formed from a section of wire fence which can be removed temporarily. This type of gate is used where access is only needed occasionally, or when the cost of a conventional rigid gate cannot be justified.

  4. Concertina wire - Wikipedia

    en.wikipedia.org/wiki/Concertina_wire

    Triple concertina wire fence Baled concertina wire prior to deployment. Concertina wire or Dannert wire [1] 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 ...

  5. Electric fence - Wikipedia

    en.wikipedia.org/wiki/Electric_fence

    Smooth steel wire is the material most often used for electric fences, ranging from a fine thin wire used as a single line to thicker, high-tensile (HT) wire. Less often, woven wire or barbed wire fences can be electrified, though such practices create a more hazardous fence, particularly if an animal becomes caught by the fencing material ...

  6. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    Strain-sensor cable installed on a chain-link/barbed-wire fence. Microphonic systems vary in design (for example, time-domain reflectrometer or piezo-electric) but each is generally based on the detection of an intruder attempting to cut or climb over a fence. Usually the microphonic detection systems are installed as sensor cables attached to ...

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  8. Chain-link fencing - Wikipedia

    en.wikipedia.org/wiki/Chain-link_fencing

    Chain-link fencing showing the diamond patterning A chain-link fence bordering a residential property. A chain-link fence (also referred to as wire netting, wire-mesh fence, chain-wire fence, cyclone fence, hurricane fence, or diamond-mesh fence) is a type of woven fence usually made from galvanized or linear low-density polyethylene-coated steel wire.

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