China Durable Razor Wire Fence Company
Razor wire fence systems are formed by helically winding high‑tensile steel wire around a core, then attaching sharp barbs at regular intervals. This geometry creates a continuous barrier that
China Durable Razor Wire Fence – Technical Overview
Razor wire fence systems are formed by helically winding high‑tensile steel wire around a core, then attaching sharp barbs at regular intervals. This geometry creates a continuous barrier that resists cutting and climbing attempts.
Material Composition and Corrosion Resistance
The base wire is typically cold‑drawn low‑carbon steel with a carbon content of 0.06–0.08 % and a manganese level below 0.5 %. After drawing, the wire undergoes a hot‑dip galvanizing process that deposits a zinc coating of 275 g/m² (≈ 20 µm) on each surface, providing a minimum salt‑spray resistance of 500 hours per ASTM B117.
For environments with higher chloride exposure, an optional aluminized zinc (Zn‑Al) coating of 300 g/m² can be specified, extending the predicted service life to over 25 years in marine atmospheres.
Mechanical Design and Tensile Strength
The core wire diameter ranges from 2.0 mm to 3.2 mm, selected according to required tensile load. Barbs are formed from 1.6 mm diameter wire, bent to a 45° angle and spaced at 75 mm or 100 mm intervals along the helix.
Typical ultimate tensile strength (UTS) of the core wire is 1 750 MPa, yielding a breaking load of approximately 22 kN for a 2.5 mm diameter strand. The helical winding adds a tensile efficiency factor of 1.2, raising the effective barrier strength to about 26 kN.
Installation Considerations and Compatibility
Razor wire coils are supplied in standard lengths of 10 m, 20 m, or 30 m, wound on reusable steel drums with an inner diameter of 300 mm. The drums facilitate rapid deployment using a tensioning bar and a series of intermediate posts spaced no more than 3 m apart.
Posts are typically galvanized steel angles (50 × 50 × 5 mm) or concrete inserts with embedded anchor bolts. The fence height is adjustable from 1.8 m to 3.0 m by varying the number of concentric coils stacked vertically.
Typical Applications in Industrial Perimeter Security
- Petrochemical processing plants where flammable vapors require a non‑sparking barrier.
- Power substations needing deterrence against unauthorized climbing while maintaining electromagnetic transparency.
- Warehouse logistics centers protecting high‑value inventory against intrusions.
- Transportation terminals (rail yards, ports) where rapid deployment and re‑tensioning are essential.
Quality Control and Testing Procedures
Each production lot undergoes dimensional verification of wire diameter (±0.02 mm), barb angle (±2°), and coil pitch (±1 mm). Tensile tests are performed on three random samples per batch using a universal testing machine at a strain rate of 10 mm/min.
Coating thickness is measured by magnetic induction probes on ten points per coil, with acceptance criteria of ≥250 g/m² zinc. Visual inspection checks for uniform barb formation and absence of surface defects such as cracks or delamination.
Customization Options
- Wire gauge: 2.0 mm, 2.5 mm, 3.0 mm, 3.2 mm core; barb wire 1.2 mm–1.8 mm.
- Barb spacing: 50 mm, 75 mm, 100 mm, 150 mm.
- Coil length: 5 m to 50 m in 5 m increments.
- Coating: standard hot‑dip galvanizing, Zn‑Al alloy, or PVC over‑coat for color coding.
- Post compatibility: adaptors for square, round, or concrete posts.
Specification Comparison
| Parameter | Standard (2.5 mm core) | Heavy‑Duty (3.2 mm core) | Custom (per request) |
|---|---|---|---|
| Core wire diameter | 2.5 mm | 3.2 mm | 2.0 mm – 3.2 mm |
| Ultimate tensile strength (core) | 1 750 MPa | 1 750 MPa | 1 750 MPa (same steel grade) |
| Breaking load per strand | ≈ 22 kN | ≈ 36 kN | Scalable with diameter |
| Typical barb spacing | 75 mm | 100 mm | 50 mm – 150 mm |
| Coating thickness (Zn) | ≥ 275 g/m² | ≥ 275 g/m² | Customizable (Zn‑Al, PVC) |
Frequently Asked Questions
- Can dimensions be customized? Yes, core diameter, barb spacing, coil length, and coating type are adjustable per project specifications.
- What information is required before quotation? Required inputs include fence height, total linear length, post type, coating preference, and any special length or spacing constraints.
- How is quality inspected? Dimensional checks, tensile testing, coating thickness measurement, and visual barb conformity are performed on each batch per ISO 9001‑based procedures.
- What packaging methods are available? Coils are wound on steel drums with protective polyethylene wrap; palletized for container loading, with corner boards and strapping to prevent deformation.
- What is the typical production lead time? Standard specifications ship within 10–15 working days after order confirmation; customized items may require 18–25 days.