Making cold drawn steel wires
Cold Drawn Steel Wire is the essential starting point in the fabrication of high-performance wire mesh fencing. Manufactured by pulling hot rolled steel wire rods through precision dies at room temperature, this process significantly enhances the wire’s tensile strength, dimensional accuracy, and surface finish.
Steel wire standards used in (3D Welded Wire Fence)
The steel wire standards for the BRC Welded Wire Fence are governed by several international guidelines, including ASTM, EN, BS, and AS/NZS. ASTM standards such as A1064, A641, and A123 ensure the steel wire’s material quality, galvanized coating, and corrosion resistance. EN standards like EN 10223-7 and EN 10244-2 cover the specifications for welded wire mesh, detailing wire dimensions, coating requirements, and the mechanical properties of the wire. BS standards, including BS EN 10223-7 and BS 1722-14, specify the requirements for high-security fencing materials, including welded wire mesh, and align with European regulations. AS/NZS standards such as AS/NZS 4534 ensure the wire’s durability in outdoor conditions by defining the hot-dip galvanizing process and coating thickness. These standards guarantee that the steel wire used in the 358 fence offers optimal performance, strength, and long-term corrosion protection.
Welding steel wires
After producing high-strength Cold Drawn Steel Wire, the next critical stage in wire mesh fence manufacturing is Welding Wire Mesh. This step involves accurately positioning longitudinal and transverse wires, then fusing them at their intersections using automated resistance welding machines. The result is a rigid, uniform mesh grid with consistent spacing and excellent strength.
Welding steel wires specifications
| Item | Specification |
|---|---|
| Welding Method | Resistance spot welding (Automatic) |
| Resistance spot welding (Automatic) | ≥1000 N (No weld breakage) |
| Bending (Reinforcement) | V-shaped folds, 2–4 bends |
Making fence post
The third step in wire mesh fence production is Forming the Fence Post, specifically shaping steel banding into a Peach-Shaped Fence Post. This process begins with high-quality galvanized or cold rolled steel strips, which are precision folded and pressed through custom-designed molds to create the signature “peach” profile — named for its rounded, ribbed sides and flat back.
| Item | Specification / Description |
|---|---|
| Material | Q195 / Q235 / |
| Forming Method | Cold roll forming |
| Applicable Standards | GB/T 3091 / EN 10219 / ASTM A500 / AS/NZS 1163 |
Galvanizing
Once the wire mesh panels are welded and the peach-shaped fence posts are formed, the next crucial step is Galvanizing after fabrication. This process involves coating both the fence panels and posts with a protective layer of zinc.
| Region / Standard | Zinc Coating Requirement |
|---|---|
| China (GB/T 13912) | ≥ 85 μm (≈610 g/m²) |
| USA (ASTM A123) | ≥ 610 g/m² for wire < 5mm diameter |
| EU (EN ISO 1461) | ≥ 55–85 μm depending on base steel thickness |
| Australia / NZ (AS/NZS 4534) | W05 class: ≥ 600 g/m² |
Powder spraying
After galvanizing, the final surface treatment step is Powder Coating—also known as Powder Spraying. This process involves electrostatically applying a dry powder onto the galvanized surface of fence panels and posts, then curing it in a high-temperature oven to form a smooth, durable, and weather-resistant finish.
| Item | Specification / Standard |
|---|---|
| Coating Thickness | ≥ 60 μm (Standard) Optional: 80–120 μm (High Protection) |
| Adhesion Standard | ISO 2409: Classification 0–1 (No flaking) |
| Impact Resistance | ISO 6272: ≥ 2.5 Joules |
| Salt Spray Test | ISO 9227 / ASTM B117: ≥ 500–1000 hours |
Making cold drawn steel wires
The CLY Chain Link Wire Mesh Fence is a versatile fencing solution composed of steel posts, reinforced crossbars, and woven steel wire mesh. The posts and crossbars are secured with specialized connectors, ensuring easy installation and adaptability to various angles and slopes... read more.
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