Wall & fence toppings
Concertina or flat wrap on top of walls, mesh and palisade fences.
High-Security Barrier
Razor Wire
Razor wire, also known as razor barbed wire or concertina wire, is a security barrier made of punched steel tape with sharp blades crimped tightly around a high-tensile core wire, supplied in coils or straight lengths.
- Blade type
- BTO-22 / CBT-65
- Core wire
- 2.5 mm
- Blade thickness
- 0.5 – 0.6 mm
- Coil diameter
- 450 – 980 mm
- Type
- Concertina, single coil, flat wrap
- Finish
- Galvanized or stainless steel
Concertina coils, single coils, flat wrap and straight lengths. Custom blades, diameters and finishes available.
What is razor wire?
Razor wire is made by punching sharp blades from galvanized or stainless steel tape and crimping the tape around a core wire. Unlike barbed wire, the blades are designed to cut, so it is much harder to climb over or pull through.
The blade type sets how aggressive the barrier is. BTO blades are short and closely spaced, with BTO-22 the most widely used. CBT blades are long and spaced further apart, with CBT-65 used for maximum deterrence.
Concertina coils are clipped at several points so they open into a cross-pattern barrier. Single coils open as a plain spiral, flat wrap lies flat along a wall or fence, and straight lengths are fixed between posts.
Tap the image to view full size
Razor Wire Specifications
Standard blade types and coil configurations.
| Item | Standard specification |
|---|---|
| Blade types | BTO-10, BTO-12, BTO-18, BTO-22, BTO-28, BTO-30; CBT-60, CBT-65 |
| BTO-22 blade | Length 22 mm, width 15 mm, barb spacing 34 mm |
| CBT-65 blade | Length 65 mm, width 21 mm, barb spacing 100 mm |
| Core wire | 2.5 mm high-tensile steel wire |
| Blade thickness | BTO 0.5 mm; CBT 0.6 mm |
| Coil diameter | 450 / 500 / 600 / 730 / 900 / 980 mm |
| Concertina clips | 3 or 5 clips per loop |
| Coil length when stretched | Approx. 8–15 m, depending on diameter and clips |
| Types | Concertina (cross); single coil (spiral); flat wrap; straight lengths; welded razor mesh |
| Material | Hot-dip galvanized steel; stainless steel 304 / 430 |
| Packing | Coils compressed, wrapped in plastic film and packed in cartons or woven bags; palletized; custom packing on request |
Custom blade types, coil diameters, clip numbers, materials and packing are available. Send your blade type, coil diameter, quantity and installation type for a quotation.
Applications
Prisons & detention centres
Inner and outer perimeter barriers for correctional facilities.
Military & border security
Rapid-deploy barriers for camps, borders and checkpoints.
Utilities & industrial sites
Deterrent for substations, depots and critical infrastructure.
Frequently Asked Questions
What is the difference between razor wire and barbed wire?
Barbed wire has short twisted wire barbs. Razor wire has punched steel blades with sharp edges crimped onto a core wire, making it much harder to climb or cut through.
What do BTO-22 and CBT-65 mean?
BTO and CBT are blade types; the number is the blade length in millimetres. BTO-22 has short, closely spaced blades. CBT-65 has long blades for maximum deterrence.
What is concertina razor wire?
It is a coil clipped together at three or five points per loop, so when stretched it opens into a cross-pattern barrier rather than a simple spiral.
How long is one coil when installed?
Typically 8–15 m, depending on coil diameter and the number of clips. Larger coils with more clips cover less length but form a denser barrier.
Galvanized or stainless steel?
Hot-dip galvanized razor wire suits most sites. Stainless steel lasts longer in coastal and humid areas and keeps its appearance.
What information do you need for a quotation?
Blade type, coil diameter, type (concertina, single coil, flat wrap or straight), material, quantity, and the destination port.
