Concertina Razorwire

Concertina razor wire is a type of Razorwire commonly used at prisons and other high security establishments.

Razorwire UK concertina

RazorwireUK Concertina Razorwire

RazorwireUK Concertina Razorwire

Depending on the coil diameter, each loop is clipped in 3 or 5 places to the following loop. So, when extended, the Razorwire forms a tubular effect by which the gaps are too small to allow someone to climb through.

RazorwireUK offers varying types & sizes of Razorwire which are available to order online or over the phone. Please see below information regarding our various products.

Razorwire Specs – Stainless Steel 304

Razorwire Diameter 730mm 500mm
Length Ext 10m 10m
Razor Wire Design Concertina Concertina
Material Stainless Steel 304 Stainless Steel 304
Blade Style BTO 22 BTO 22
Blade Thickness 0.5mm 0.5mm
Wire Diam 2.5mm 2.5mm
Barb Length 22mm 22mm
Barb Width 15mm 15mm
Barb Spacing 34mm 34mm
Loops per coil 54/55 54/55
Clips per loop 5 3

Razorwire Specs – Galvanised Steel 200g/m2

Razorwire Diameter 900mm 730mm 450mm
Length Ext 10m 10m 10m
Razor Wire Design Concertina Concertina Concertina
Material Galvanised 200g/m2 Galvanised 200g/m2 Galvanised 200g/m2
Blade Style CBT65 CBT65 CBT65
Blade Thickness 0.6mm 0.6mm 0.6mm
Wire Diam 2.5mm 2.5mm 2.5mm
Barb Length 65mm 65mm 65mm
Barb Width 21mm 21mm 21mm
Barb Spacing 100mm 100mm 100mm
Loops per coil 54/55 54/55 54/55
Clips per loop 5 5 3

Choosing your Razor wire

Choosing which Razorwire is best for you can be difficult. However, our team at RazorwireUK are happy to help & can offer suggestions based on your personal use.

Typically, the bigger the diameter the more of an obstacle/deterrent the Razor wire is. 450mm diameter is the smallest size we recommend for domestic installations. This size is an adequate deterrent and also the easiest to fit, as standard support brackets will be suitable for this diameter and weight of the razor wire. 730mm & 900mm diameter will require specially made brackets for an installation.

If fitting to the ground then we recommend a size that can’t be vaulted over, then the suggested options would be to install a single run of 900mm diameter Razorwire or alternatively, stack smaller diameter Razorwire on top of each other either vertically or in a pyramid fashion.

Barbed Tape Diagram


Handling and PPE

The biggest misconception with handling Razorwire is that cut resistance Gloves and protective clothing are sufficient. The handler should always use the highest level of puncture-resistant PPE to prevent injury whilst installing. Our own brand of PPE called Razorpro is rated to Class 4 cut & puncture resistance which is the highest level of protection available in a material type format.

For more information on PPE please visit our PPE page

Razor wire PPE protective gloves, body protection


High Quality Specification

One way in which the industry maximise profits is disguising the razor wires specification. If the specification is not clearly stated then you may not be getting value for money!

Don’t Forget your Protective Equipment!

Always keep safe and wear protective equipment which can be found on our PPE page

or call us on
01603 259649

Points to note when selecting Razor Wire

  • The core wire diameter:
    2.5mm is the industry standard, anything less has proportionately less tensile and inherent strength.
  • The number of loops per coil
    This determines the amount of Razorwire on the coil and therefore the profile density when deployed, an important point when comparing prices. All our coils have 55 loops per coil, this means the coils can be extended easily up to 10m whilst maintaining a dense profile of Razorwire.
  • Stainless Steel or Galvanised?
    The environment the product is being deployed in may determine whether Stainless Steel or Galvanised is the best option. Stainless Steel is more expensive, but offers greater durability especially in salt air environments. Over time Stainless Steel will outlast Galvanised, therefore making it the best long term option. However, Galvanised is more than adequate for most UK regions and applications. We would always suggest you check the level of zinc coating when selecting Razorwire, all our Galvanised products are 200g/m2, if the supplier cant provide the information, you may only be getting a product with 60g/m2 which will deteriorate and rust much more quickly.
  • Blade type
    Smaller blades such as BTO10 (10mm) are quite small and therefore less of a deterrent. Larger blade profiles such as CBT65 (65mm) are much more effective & therefore reflected in the price.
  • Blade thickness
    0.5mm is the industry standard, anything less is likely to bend easily.

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