Introduction
When you need top-tier perimeter protection for high-risk sites, ordinary mesh fences are simply not enough. This is where 358 security fences step in. Also widely known as anti-climb fences, 358 security fences feature narrow mesh openings that make climbing extremely difficult. They are the go-to choice for sites that demand strict security, such as prisons, data centers, substations, border checkpoints and warehouse high-security zones.
Many buyers know that 358 mesh delivers strong anti-climb performance, yet they overlook quality differences between suppliers. Poorly manufactured 358 security fences may suffer weak welding, inconsistent wire diameter or thin coating. In high-security scenarios, even one weak weld can create a major security vulnerability. So picking the right manufacturer and specifications is critical.
As a professional fencing manufacturer, Giant Fence specializes in high-grade 358 security fences and welded mesh products. All our welded mesh items are produced under UNE‑EN‑10223‑7:2013. We carry out strict controls over steel wire material, coating weight and welding procedures. We also adopt the ISO 9223:2012 atmospheric corrosion classification system to develop customized anti-corrosion coating options. Under ideal operating conditions, without surface damage and with professional installation, each coating can achieve its theoretical service life.
This practical guide walks you through core specs, coating options, site selection and procurement advice for 358 security fences, helping you build a reliable high-security boundary.
What Are 358 Security Fences & Typical Application Sites
358 security fences get their name from the mesh dimension: 3” × 0.5” × 8 gauge. The small, compact rectangular openings prevent toe and finger holds, so intruders cannot easily grip the mesh to climb over. Compared with regular 3D fences or chain link, 358 security fences are designed specifically for anti-climb and anti-cut requirements.
Giant Fence fabricates 358 security fences with tight mesh tolerances to guarantee consistent opening size across the whole panel.
Common application scenarios:
✅ Prison, detention center and correctional facility boundaries
✅ Data centers, server rooms and telecom stations
✅ Power substations and energy plants
✅ Customs, border posts and military restricted zones
✅ High-value storage warehouses and pharmaceutical factories
✅ Airport perimeter and critical infrastructure protection
Key Specifications to Verify Before Purchasing 358 Security Fences
Wire Diameter
Wire diameter directly impacts cut resistance. Thicker steel wire makes 358 security fences harder to cut with basic hand tools. Giant Fence supplies multiple wire diameter options to match different security threat levels. Higher-risk sites require heavier wire for enhanced anti-cut performance.
Mesh Opening Size
The signature feature of 358 security fences is its narrow mesh aperture. Uniform mesh size is essential. If the opening varies from panel to panel, it creates potential climbing points. Giant Fence maintains precise mesh dimensions during welding, complying with strict quality requirements.
Panel Height & Frame Design
358 security fences are commonly supplied in tall panels to stop overtopping. Some projects add barbed wire or razor wire on top for extra protection. Panel frames can be welded or fitted with reinforced edge strips, which improve overall rigidity and prevent mesh deformation under force.
Post Type & Fixing Hardware
Solid supporting posts and heavy-duty fixings keep the entire anti-climb barrier stable under impact or attempted breach. Giant Fence can supply matching security posts, clamps, bolts and anti-tamper fasteners together with your 358 security fences. Anti-tamper bolts are strongly recommended for high-security sites to stop easy disassembly.
Surface Coating
Coating protects steel mesh from rust. We rely on ISO 9223:2012 corrosion grades to select suitable coatings for different working environments.
Anti-Corrosion Coating Solutions Based on ISO 9223:2012
Most high-security sites are outdoor, so corrosion resistance cannot be ignored. Giant Fence designs coating packages for 358 security fences according to ISO 9223:2012:
C1‑C3 Low to moderate corrosion (inland environments)
Inland substations, inland data centers and regular industrial restricted zones usually fall into C1‑C3 grade. Standard hot-dip galvanized plus powder coated 358 security fences work perfectly. When installed properly and coating remains intact, these fences can reach their theoretical service life.
C4‑CX High to extreme corrosion (coastal & heavy industrial zones)
Coastal salt spray and corrosive gas in heavy industrial areas accelerate metal corrosion rapidly. Standard coatings degrade quickly here. Giant Fence provides upgraded heavy-duty anti-corrosion 358 security fences, adopting enhanced hot-dip galvanization combined with premium outdoor powder coating to resist harsh corrosive conditions.
Important reminder: The theoretical service life of coatings only applies under ideal conditions. If the coating is scratched, cut or impacted, bare steel will be exposed and local rust may form. Regular inspection and maintenance are required for long-term security performance.
Practical Buying & Installation Tips for 358 Security Fences
Match wire specification and additional top security accessories to your risk level. Critical infrastructure sites can add razor wire on top of 358 security fences.
Confirm your site corrosion environment before selecting coating. Never use inland standard coating for coastal high-security projects.
Choose anti-tamper fasteners. Ordinary bolts can be removed easily, which weakens the whole high-security perimeter.
Check foundation conditions. Tall 358 security fences create larger wind load. Concrete foundations must be designed properly to prevent tilting in strong winds.
Request samples before bulk order. Physical samples help you inspect wire strength, welding quality, mesh precision and coating finish from Giant Fence.
Plan routine inspection. Check weld points, coating integrity and fastener tightness regularly to keep 358 security fences in good working condition.
Frequently Asked Questions
Q1: Does UNE‑EN‑10223‑7:2013 apply to 358 security fences?
A1: Giant Fence manufactures the welded mesh of our 358 security fences following UNE‑EN‑10223‑7:2013. This standard regulates steel wire raw material, coating weight and welding quality, ensuring every weld point is solid and reliable for high-security use.
Q2: Can 358 security fences be installed in coastal areas?
A2: Yes. Coastal sites generally belong to ISO 9223:2012 C4‑CX corrosion grade. Ordinary powder coating cannot withstand salt spray erosion. Giant Fence’s heavy anti-corrosion 358 security fences are the ideal option for coastal high-security perimeters.
Q3: What makes 358 security fences different from regular welded mesh fences?
A3: 358 security fences have much smaller mesh openings to eliminate hand and foot holds. Combined with thicker wire and reinforced fixings, they focus on anti-climb and anti-cut functions, which regular welded mesh fences cannot provide. Giant Fence designs each panel to meet strict high-security demands.
Conclusion
358 security fences are the preferred solution for high-security perimeter protection. Wire diameter, mesh precision, reinforced fixings and anti-corrosion coating all decide the overall security and service life.
Giant Fence produces 358 security fences with welded mesh complying with UNE‑EN‑10223‑7:2013. We develop anti-corrosion coating systems based on ISO 9223:2012 to suit C1‑C3 inland environments and C4‑CX coastal or heavy industrial environments.
If you are planning a high-security perimeter project and want reliable 358 security fences, contact the Giant Fence team. Share your site location, security requirements, fence height and order quantity, and we will provide samples, technical drawings and competitive quotations.