Concertina coil · Razor blade tape
Manufacturers of Concertina coils and RBT wire in GI and MS, made with Tata GP sheet. Factory near Kolkata, supplying across India.
Our products
Excellence, every time.
Razor blade tape clipped into a spring-like coil that opens out along a wall, fence or open ground. Quick to lay, hard to cross.
Razor blade tape: steel blades crimped onto a 2.5 mm core wire. Run it straight along the top of a wall or fence, or use it in your own coils.
Strength, durability and precision in every coil we make.
Blade types
| Detail | BTO-22 | BTO-15 |
|---|---|---|
| Core wire | 2.5 mm | 2.5 mm |
| Material | GI or MS | GI or MS |
| Clips | 1.5 mm Tata GP sheet | 1.5 mm Tata GP sheet |
| Coil diameter | To your order | To your order |
| Available as | RBT and Concertina | RBT and Concertina |
Need exact blade dimensions or a drawing for a tender? Ask us.
Where it's used
Offices, depots, camps and protected areas
Boundary walls, yards and loading areas
Long open perimeters
Sites, plots and gated colonies
Keep out trespassers and animals
On top of boundary walls and gates
Regular supply in your customers' sizes
Made to the job's size and length
About us
Dhanuka Wiretech was founded in January 2025 by Ravi Dhanuka and is run by Sreyansh Dhanuka. We started with one dream: to help secure our country's borders and government premises with the best security wire we can make, and to supply customers across India.
Everything is made in our own factory at Panchla, near Kolkata, with in-house crimping and clipping, ready for bulk and repeat orders.
Our factory, Panchla · Since 2025
Our vision
To help secure India's borders and government premises with the finest razor wire made in India, and to be the most trusted name in security fencing across the country.
Our mission
To make security wire to each customer's exact size, from quality steel, checked in our own factory and delivered on time anywhere in India. And to stand behind every coil we sell.
How we make it
We act honestly and ethically.
We strive for high performance.
We take responsibility for our products.
We succeed together.
Questions
RBT is the blade tape itself, laid straight or in loops. Concertina is RBT clipped into a coil that opens out like a spring, giving a wider and deeper barrier.
The product (RBT or Concertina), GI or MS, blade type (BTO-22 or BTO-15), diameter, rounds or length, how many pieces, and your delivery city.
Yes. Every order is made to the customer's size.
Yes, we supply across India. Tell us your city and we will give you a delivery plan.
Get a quote
Fill in the form, or call or WhatsApp us directly.
Dhanuka Wiretech
7A, Bentinck Street
Kolkata 700 001, West Bengal
GSTIN 19ADLPD7573P1ZP
Om Industrial Complex, Jujersha Road
Deulpur, Joyrampur
Howrah 711 302, West Bengal
Near Dhulagarh Bazar, opposite Golabari Pole Factory
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