Concertina Wire Specifications: Dimensions, Coil Types, and Tensile Strength

Product details description

　　Concertina wire is a formidable security barrier made from helically coiled barbed or razor wire, and its specifications determine effectiveness and deployment. Dimensions include wire diameter, coil diameter, and loop spacing. Standard wire diameters range from 2.0 mm to 2.5 mm for barbed versions and 0.5 mm to 0.9 mm for razor types, balancing flexibility with cutting potential. Coil diameters commonly span 300 mm to 980 mm; smaller diameters create tighter, denser barriers, while larger coils cover more linear distance per unit. Loop spacing (pitch) varies from 25 mm to 100 mm, influencing how easily the wire can be handled or penetrated.

　　Coil types fall into single, double, and triple configurations. Single-coil concertina is a single continuous helix, easy to transport and deploy in straight runs. Double-coil versions intertwine two helices, increasing density and deterrent effect, often used at high-security perimeters. Triple-coil designs offer maximum security by adding a third intertwined strand, substantially hindering cutting or climbing attempts. Collapsible concertina coils can be compressed for transport and spring open when released, enabling rapid deployment in tactical scenarios.

　　Tensile strength is critical for durability and deterrence. High-carbon steel wire provides tensile strengths between 1100 MPa and 1400 MPa, ensuring the coils resist pulling apart or deformation under stress. Galvanization or PVC coating enhances corrosion resistance, vital for outdoor installations. Razor wire coils integrate stamped steel blades with tensile cores; the blades inflict injury while the core sustains structural integrity. Testing standards such as ASTM or MIL-SPEC define minimum tensile and corrosion benchmarks for military and correctional use.

　　Matching specifications to application ensures optimal performance. Short perimeter runs may use lighter single-coil barbed wire, while prisons or military zones require double or triple razor coils with maximum tensile and corrosion resistance. Knowledge of dimensions, coil types, and tensile strength allows planners to design barriers that deliver the right balance of security, portability, and longevity.