1. Start with your site constraints

Write down your own requirements before you look at products:

• Available space. Does the barrier have to stay within the outline of an existing fence, or is there room for a wider spiral coil?
• Location. Is the site in a crowded urban area or a public space, where a less aggressive appearance matters?
• Mounting surface. Will the wire go on an existing fence, on a concrete slab, or stand alone as a barrier?
• Exposure. What weather and corrosion conditions will the wire face?
• Length and handling. How many metres do you need, and how will the coils be moved on site?

The BTO-22 is a good fit when space is the main limit. If you need maximum barrier depth, look at the alternatives in section 4.

2. What the BTO-22 is

According to the product page, BTO-22 is a flat wrap version of the spiral razor coil. Its coils lie in one plane, so it takes up much less room than spiral concertina wire. It is made from reinforced barbed tape held together with galvanized steel staples. The manufacturer says the flat design does not extend beyond the outline of the perimeter fence. It also says the wire keeps its obstruction properties after localized cutting or damage.

3. Published specifications to check

How to use these figures:

• Wire diameter and blade thickness. The 2.50 mm core wire and 0.50 mm blade sheet have plus-only tolerances. When you compare quotes, ask each supplier to state tolerances the same way.
• Zinc coating. For hot dip galvanized razor wire, the coating weight (here 200 g/m² minimum) is a clearer comparison point than "galvanized" by itself. Confirm that the core wire and the blade are both covered by the coating you specify.
• Height and coil diameter. A 90 cm height and 45 cm coil diameter should match your fence top or wall profile.
• Length and weight. At 16 m and 16 kg per coil, divide your perimeter length by 16 m to estimate how many coils you need. Then plan handling and freight around that figure.

Opening size: the published BTO-22 specifications do not list an opening or loop size. If your project specification sets an opening size, ask for it in writing before you order. Do not assume a value.

4. When flat wrap fits, and when it does not

The product page includes the manufacturer's own qualitative comparison:

These ratings come from the supplier and are not independent test results. Even so, they point to some practical rules:

• Choose BTO-22 when the barrier must stay within the fence outline, the site is urban or public, or spiral coils are impractical.
• Consider standard concertina when you have the space and want the highest rated security level in this comparison.
• Consider traditional barbed wire, such as hot dipped galvanized barbed wire, when material cost matters most and a moderate security level is enough. Check the coating specification if rust is a concern.

The manufacturer says BTO-22 uses less wire than concertina coils, which can lower material and installation costs. Confirm the actual figures with a project quotation.

5. Mounting and support

The product page says BTO-22 can be installed on existing fences, on concrete slabs, or as an independent barrier. It also says technical guidance is available on installation methods for different fence types and substrates. Share your fence type and substrate details with the supplier when you request this guidance.

6. What this guide does not cover

Quick buyer checklist

1. Confirm the space limit: flat wrap or spiral coil.
2. Match the 90 cm height and 45 cm coil diameter to your fence.
3. Check the 2.50 mm core wire, 0.50 mm blade sheet and 200 g/m² minimum zinc coating against your specification.
4. Calculate how many 16 m coils you need.
5. Request opening size, price, lead time and any documentation in writing.