Barbed wire is a type of steel fencing wire constructed with sharp edges or points arranged at intervals along the strand. It is commonly used in fencing, especially in agricultural settings, to secure boundaries and restrict livestock. Barbed wire is also widely employed in security applications due to its deterrent properties.
Construction:
Barbed wire is typically made up of two or more intertwined strands of steel wire with barbs at regular intervals. The barbs consist of sharp, pointed projections that are twisted around the main wire strands. The wire itself can be galvanized to resist rust and increase durability.
Key Features:
- Sharp Barbs: Provides effective deterrence and security.
- Galvanized or PVC-Coated: For enhanced corrosion resistance and extended lifespan.
- Tensile Strength: The wire is designed to withstand high tension, making it difficult to cut or tamper with.
- Multiple Strands: The most common configurations are single-strand, double-strand, or twisted multiple strands for increased strength.
Applications:
- Perimeter fencing in agricultural lands.
- Security barriers in sensitive areas such as military installations, prisons, and restricted zones.
- Industrial fencing for warehouses, factories, and construction sites.
- Highway fencing to restrict unauthorized access.
Dimensions and Specifications:
The following table presents typical dimensions and specifications for barbed wire:
| Parameter | Standard Value | Notes |
|---|---|---|
| Wire Diameter (Main Strand) | 1.6 mm to 2.8 mm | Varies depending on the application |
| Barb Length | 13 mm to 25 mm | Longer barbs increase the deterrent effect |
| Barb Spacing | 75 mm to 150 mm | Commonly spaced at 100 mm |
| Number of Barbs per Twist | 2 to 4 | Typically 2 or 4 barbs per twist |
| Coil Length | 50 m, 100 m, 200 m | Can be customized according to requirement |
| Tensile Strength | 300 to 400 N/mm² | Affects resistance to cutting |
| Coating (Galvanization) | 60 g/m² to 300 g/m² | Heavier coating increases corrosion resistance |
| Weight per Coil | 15 kg to 40 kg | Depends on wire thickness and coil length |
Variants:
- Galvanized Barbed Wire: Rust-resistant and commonly used in outdoor applications.
- PVC-Coated Barbed Wire: Offers additional corrosion resistance and comes in various colors for visibility.
- Stainless Steel Barbed Wire: High corrosion resistance suitable for harsh environments.
Installation Considerations:
- Barbed wire should be installed under tension to ensure it remains taut over time.
- Post spacing and anchoring play a critical role in maintaining the effectiveness of the fence.
- Safety precautions must be taken during installation to prevent injury from sharp barbs.