CBT-25 Razor Wire Specifications, Dimensions and Applications Guide

CBT-25 razor wire is a concertina-style security barrier made from a steel core and sharp, mechanically formed blades. In most industry specifications, “CBT-25” identifies a blade profile with an approximately 25 mm nominal blade dimension, but exact blade width, length, spacing, wire diameter, and coil diameter can vary by manufacturer. I recommend treating the CBT-25 designation as a starting point and confirming the technical drawing before placing a purchase order.

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At Wanquan, I help B2B buyers evaluate CBT-25 razor wire by specification, material, installation condition, packaging, and project quantity. This guide explains the main dimensions, material choices, suitable applications, selection process, and procurement questions that should be resolved before sourcing.

Who This Guide Is For

This guide is intended for distributors, fencing contractors, security integrators, infrastructure developers, government procurement teams, and industrial site operators. It is especially useful when a project specification mentions CBT-25 razor wire but does not provide a complete dimensional drawing. It can also help buyers compare supplier quotations that use different descriptions for similar-looking products.

I focus on practical purchasing decisions rather than treating one nominal code as a universal standard. Local regulations, installation height, handling requirements, and the required security level should always be reviewed by the responsible project engineer or authority.

What CBT-25 Razor Wire Means

CBT-25 razor wire is normally supplied as a spiral coil that expands into a concertina barrier. A galvanized or coated steel wire forms the supporting core, while sharp blades are crimped or stamped around the core at regular intervals. When installed on a fence, wall, roof edge, or security structure, the coil creates a difficult physical obstacle and increases the time and effort needed for unauthorized access.

The “CBT” designation is commonly used for concertina barbed tape products, while “25” generally refers to a nominal blade dimension in millimeters. However, suppliers may apply product codes differently, so the code alone should not be used to calculate coverage, coil length, or installation spacing. I advise buyers to request a sample, dimensional drawing, or approved technical datasheet before confirming the final order.

Core CBT-25 Specifications and Dimensions

The following table shows the specification categories that should appear in a professional quotation. The numerical example is a common reference point for CBT-25 discussions, not a universal manufacturing standard. Final values should be confirmed against Wanquan’s quotation and the buyer’s project requirements.

For example, a 450 mm coil diameter is a commonly requested commercial size, but it should not be assumed for every CBT-25 order. A supplier may offer different coil diameters, blade spacing, or expanded lengths to suit a fence-top installation, free-standing barrier, or transport restriction. The buyer should also confirm whether the quoted length refers to the unexpanded coil, installed coverage, or a recommended installation range.

Material and Surface Options

Galvanized steel is widely selected because the zinc coating provides a protective barrier against atmospheric corrosion. Stainless steel may be considered for aggressive environments, coastal exposure, chemical facilities, or projects with a longer corrosion-resistance requirement, although its purchase price is normally higher. Some projects also specify a polymer-coated finish over galvanized steel for color matching or additional surface protection.

When reviewing materials, I recommend asking for the base steel type, coating description, coating requirement, and available inspection documents. A statement such as “galvanized” is not sufficient if the project requires a defined coating mass, salt-spray performance, or compliance with a local standard. If no standard is specified, the buyer should document the agreed material and acceptance criteria in the purchase order.

Applications for CBT-25 Razor Wire

CBT-25 razor wire is commonly considered for perimeter fencing, correctional facilities, military and defense-related sites, warehouses, utility compounds, transport infrastructure, and industrial plants. It can be installed on welded mesh fences, chain-link fences, concrete walls, security gates, and purpose-built support arms. The correct support system is essential because the razor wire itself is only one part of the overall barrier.

For a fence-top application, brackets, posts, clamps, and tensioning components must be compatible with the coil weight and local wind conditions. For a free-standing concertina barrier, the buyer should review coil stability, handling requirements, storage, and whether the barrier needs to be temporarily deployed. I do not recommend selecting a product only by visual appearance, because installation geometry can affect the actual security function and maintenance burden.

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How to Select the Right CBT-25 Product

1. Define the Installation Scenario

First, I identify where the razor wire will be installed and whether it is intended as a permanent or temporary barrier. A fence-top installation may require compact coils and dedicated angled brackets, while a ground barrier may require support stakes, joining clips, and controlled expansion. The project drawings should state the fence height, top configuration, access points, and any emergency egress requirements.

2. Confirm the Dimensional Package

Next, I compare the blade profile, core wire diameter, blade thickness, pitch, coil diameter, coil length, and expanded coverage. These details should be provided in a product datasheet or technical drawing rather than communicated only through informal messages. If two suppliers quote “CBT-25” but provide different dimensions, the buyer should compare the physical specifications instead of assuming the products are identical.

3. Select the Material and Finish

Choose galvanized steel when the project requires a practical balance between protection and cost in ordinary outdoor conditions. Consider stainless steel or a suitable coated option when exposure, maintenance access, or expected service conditions justify the additional cost. The final material choice should reflect the environment, expected service period, local availability, and project maintenance plan.

4. Calculate Quantity and Packaging

Quantity should be calculated from the actual fence route, recommended coil spacing, installation overlap, corners, gates, and spare requirements. A project requiring 1,000 meters of fence coverage should not automatically order 1,000 meters of razor wire, because the coil arrangement and installation method determine the consumption rate. I recommend adding a documented allowance for cutting, joining, damage during installation, and future repairs rather than using an unexplained percentage.

Procurement Factors: Price, MOQ, and Lead Time

CBT-25 razor wire pricing depends on steel grade, coating or stainless material, blade and core dimensions, coil diameter, order quantity, packaging, and shipping destination. Minimum order quantity may vary according to raw material purchasing, production scheduling, and export packing requirements. Buyers should request a complete quotation that separates product price, packaging, tooling or customization charges, and delivery terms.

Lead time also depends on specification approval, material availability, production capacity, inspection requirements, and shipping arrangements. I advise allowing time for drawing confirmation before production begins, especially when the buyer needs a non-standard coil diameter or private-label packaging. The quotation should state the production lead time, validity period, packing method, and the documents supplied with the shipment.

Supplier Evaluation Checklist

A reliable supplier should be able to explain how its CBT-25 code is defined and provide consistent information across the quotation, drawing, sample, and packing list. I recommend checking whether the supplier can discuss raw material, surface finish, dimensional tolerances, coil expansion, packaging, and loading conditions. Clear technical communication is particularly important when the buyer is purchasing for a project with several subcontractors or multiple delivery locations.

• Request a complete CBT-25 dimensional datasheet or drawing.
• Confirm blade profile, core wire diameter, coating or stainless material, and tolerances.
• Clarify closed coil diameter, expanded coverage, coil weight, and quantity per package.
• Ask for sample approval if the appearance or blade geometry is important.
• Confirm production lead time, MOQ, packing method, and delivery terms in writing.
• Review installation accessories and handling instructions with the project team.

Important Limitations and Safety Considerations

Razor wire is a hazardous product and must be handled by trained personnel using suitable protective equipment and controlled installation procedures. It should not be installed where it creates an unacceptable risk to authorized workers, emergency responders, children, animals, or public access. Buyers are responsible for reviewing applicable safety, planning, security, and property regulations before installation.

CBT-25 razor wire is also not a complete security system by itself. Its performance depends on the supporting fence, access control, lighting, surveillance, intrusion detection, maintenance, and site design. Where a lower-risk or more visually acceptable solution is required, anti-climb mesh, welded security fencing, palisade fencing, or electronic security systems may be considered as alternatives or complementary measures.

Summary Insight

CBT-25 razor wire is a concertina security product whose exact dimensions must be confirmed rather than inferred from the product code alone. The most important purchasing details are blade geometry, core wire, material and coating, coil diameter, expanded coverage, quantity calculation, and installation accessories. A well-prepared specification reduces the risk of receiving a product that looks similar but does not match the project design.

At Wanquan, I support B2B buyers with CBT-25 product selection, dimensional confirmation, material options, export packaging, and quotation preparation. Send us your required fence length, installation scenario, preferred material, coil diameter, destination, and target quantity. We can then review the specification and prepare a practical supply proposal for your project.

For more CBT-25 Razor Wireinformation, please contact us. We will provide professional answers.