Concertina wire is a type of barbed wire or razor wire that is formed in large coils which can be expanded like a concertina. Each coil actually consists of two oppositely wound helices which support each other against crushing while allowing easy longitudinal movement. In conjunction with plain barbed wire and steel pickets, it is used to form military wire obstacles. During World War I soldiers manufactured concertina wire themselves, using ordinary barbed wire. Today it is factory made.
Concertina wire packs flat for ease of transport, but can then be deployed as an obstacle much more quickly than ordinary barbed wire.
A platoon of soldiers can deploy a single concertina fence at a rate of about a kilometer per hour. Such an obstacle is not very effective by itself, and concertinas are normally built up into more elaborate patterns as time permits.
Concertina wire is sometimes mistakenly called constantine wire. "Constantine" probably came from a corruption/misunderstanding of "Concertina" and led to confusion with the Roman Emperor Constantine. This in turn has led to some people trying to differentiate between concertina wire and "constantine" wire by incorrectly 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.
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Razor Blade Specification:
|
Reference Number |
Blade Style |
Thick ness |
Wire Dia |
Barb Length |
Barb Width |
Barb spacing |
|
BTO-12 |

|
0.5 ±0.05 |
2.5 ±0.1 |
10 ±1 |
13 ±1 |
26±1 |
|
BTO-18 |

|
0.5 ±0.05 |
2.5 ±0.1 |
15 ±1 |
15 ±1 |
33±1 |
|
BTO-22 |

|
0.5 ±0.05 |
2.5 ±0.1 |
22 ±1 |
15 ±1 |
34±1 |
|
CBT-65 |

|
0.6 ±0.05 |
2.5 ±0.1 |
65 ±2 |
21 ±1 |
100±2 |
Barbed Tape Concertina (BTC);Barbed Tape Obstacle (BTO)
Standard materials are either galvanized or stainless steel.
Standard packages products are shown in the tables above, special specifications available on request.
Barbed Tape Wire Specification:
| Outside Diameter |
No. of Loops |
Standard Length per Coil |
Type |
Notes |
|
450mm |
33 |
8M |
CBT-65 |
Single coil |
|
500mm |
41 |
10M |
CBT-65 |
Single coil |
|
700mm |
41 |
10M |
CBT-65 |
Single coil |
|
960mm |
53 |
13M |
CBT-65 |
Single coil |
|
500mm |
102 |
16M |
BTO-10.15.22 |
Cross type |
|
600mm |
86 |
14M |
BTO-10.15.22 |
Cross type |
|
700mm |
72 |
12M |
BTO-10.15.22 |
Cross type |
|
800mm |
64 |
10M |
BTO-10.15.22 |
Cross type |
|
960mm |
52 |
9M |
BTO-10.15.22 |
Cross type |
|
1) Razor Wire Short Blade Profile This is the original profile of Razor wire barbed tape, developed for military applications. Although mostly replaced by medium blade, it is still preferred by some organisations.
|
2) Razor Wire Short Blade Ripper Profile The ordinary short blade profile was designed for military use, it has now been upgraded to incorporate a reinforcing flange. This improvement increases its resistance to cutting and makes it more rigid.
|
3) Razor Wire Medium Blade Profile An improvement on the short blade at a cost-effective price level. Used widely for commercial and industrial applications.
|
4) Razor Wire Ripper Blade Profile Ripper razor wire has become the most popular seller because it is very effective yet competitively priced. It incorporates longer, sharper blades and a reinforcing band, which substantially improves rigidity of the coil. Overall it is more dangerous to handle and tougher to cut.
|
5) Razor Wire Long Blade Profile A vicious product when manufactured of toughened stainless steel blade material. It is usually used for Prison fencing.
|
6) Razor Wire Ribbon Blade Profile Ribbon blade is generally welded onto the top of security fencing mesh. The end product provides an all-in-one anti-intrusion mesh, which is cost effective (saves extra labour to install razor coil) with a neat and pleasant appearance.
|
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