Your One-Stop Wire Mesh Fence Supplier | POLYMETAL
POLYMETAL proudly presents our 358 Prison Mesh Fencing, a cutting-edge high-security fencing solution engineered for exceptional strength, security, and visibility. This system is designed to deter intrusion with anti-cutting and anti-climbing performance while still maintaining clear sightlines for surveillance, patrols, and camera monitoring—making it a reliable choice for high-risk and compliance-sensitive projects.
What Makes “358” Different
The 358 mesh format is known for its tight, close-aperture structure and strong wire layout that makes it extremely difficult to cut with common hand tools and very hard to climb using fingers or footwear. In practice, that means you get a fence that behaves like a physical barrier and a security screen at the same time, while still allowing visibility through the panel for guards, lighting, and CCTV. If you want to compare corrosion-protection options for the base steel, you can also read pre-galvanized.
Top 11 Trap Facts Before Buying POLYMETAL 358 Prison Mesh Fencing
Trap 1: Thinking “Any 358 Panel” Is the Same
Two fences can both be called “358” but perform totally differently if the panel build, fixing method, clamp strength, and post sizing are not engineered as a complete system.
Trap 2: Choosing Height Without Matching Post Structure
Fence height is not just a panel decision—it drives post size, wall thickness, embed depth, and clamp/bar sizing. If the post system is underbuilt, tall fences can flex, loosen, and drift out of line.
Trap 3: Ignoring the Fixing Method (Clamp Bar vs Standard Brackets)
High-security mesh relies heavily on how it’s fixed to posts. Clamp bars and high-strength fixings reduce panel tampering and prevent “working loose” over time.
Trap 4: Underestimating Corner and Interior Clamp Quantity
If clamp quantities are insufficient, high-pressure points (ends, corners, gates, and transitions) become the weak link. Proper clamp count is a real security factor—not a cosmetic detail.
Trap 5: Forgetting Visibility Is a Security Feature
A fence that blocks surveillance creates blind zones. 358 is chosen because it combines strong resistance with clear viewing, supporting patrols and monitoring.
Trap 6: Mixing 2D and 3D Concepts Without Understanding the Difference
2D and 3D versions use different structural logic. If you specify the wrong format for your loading and site conditions, you can sacrifice rigidity or overpay for unnecessary structure.
Trap 7: Choosing the Wrong Post Profile for the Environment
C posts, round posts, and square posts each bring different strengths in rigidity, fixing style, and aesthetics. The “best” post depends on security level, wind loading, and site standards.
Trap 8: Treating Surface Protection Like a Simple Color Choice
Coating systems are not equal. Electric galvanizing, hot-dip galvanizing, PVC spraying, PVC coating, and powder coating each behave differently under coastal exposure, chemical atmospheres, and long outdoor cycles.
Trap 9: Skipping the “System Toppings” That Complete Perimeter Security
For higher-risk perimeters, posts with arms and razor barbed wire toppings can be integrated to form a High Security Fence System that is significantly harder to breach than panels alone.
Trap 10: Assuming Installation Will “Figure Itself Out”
A high-security fence must be installed correctly: panel positioning, butt-joint alignment at each post, consistent bracket torque, and correct clamp bar seating all affect final security performance.
Trap 11: The Biggest Trap Is Weak Packaging and Transit Damage
Many failures happen before the fence even reaches site. Bent panels, scratched coatings, and deformed edges can ruin alignment, appearance, and corrosion resistance—turning “good product” into expensive rework.
2D 358 Prison Mesh Fencing Specifications
| Item | Fence Height (m) | Panel Size (H × W) | Fence Post (H × Size × T) | Clamp Bar (H × W × T) | Interior or Corner Clamp No. (pcs) |
|---|---|---|---|---|---|
| 2DS-1 | 2.0 | 2007 × 2515 | 2700 × 60 × 60 × 2.5 | 2007 × 60 × 5.00 | 7 or 14 |
| 2DS-2 | 2.4 | 2400 × 2515 | 3100 × 60 × 60 × 2.5 | 2400 × 60 × 5.00 | 9 or 18 |
| 2DS-3 | 3.0 | 2997 × 2515 | 3800 × 80 × 80 × 2.5 | 2997 × 80 × 6.00 | 11 or 22 |
| 2DS-4 | 3.3 | 3302 × 2515 | 4200 × 80 × 80 × 2.5 | 3302 × 80 × 6.00 | 12 or 24 |
| 2DS-5 | 3.6 | 3607 × 2515 | 4500 × 100 × 100 × 3.0 | 3607 × 100 × 7.00 | 13 or 26 |
| 2DS-6 | 4.2 | 4204 × 2515 | 5200 × 100 × 100 × 4.0 | 4204 × 100 × 8.00 | 15 or 30 |
| 2DS-7 | 4.5 | 4496 × 2515 | 5500 × 100 × 100 × 5.0 | 4496 × 100 × 8.00 | 16 or 32 |
| 2DS-8 | 5.2 | 5207 × 2515 | 6200 × 120 × 120 × 5.0 | 5207 × 100 × 8.00 | 18 or 36 |
3D 358 Prison Mesh Fencing Specifications
| Item | Fence Height (m) | Panel Size (H × W) | No. of Beams | O/A Length | Posts Material (mm) | Interior Clamps No. | Corner Clamps No. |
|---|---|---|---|---|---|---|---|
| 3DS-1 | 2.0 | 2000 × 2515 | 2 | 2700 | 80 × 60 × 2.0, RHS | 6 | 6 |
| 3DS-2 | 2.4 | 2400 × 2515 | 3 | 3100 | 80 × 60 × 2.0, RHS | 7 | 7 |
| 3DS-3 | 3.0 | 3000 × 2515 | 3 | 3800 | 80 × 80 × 2.5, SHS | 10 | 10 |
Unmatched Security With Clear Visibility
POLYMETAL 358 Prison Mesh Fencing uses close mesh openings and strong horizontal wires to make cutting and climbing extremely difficult. This structure supports high visibility for surveillance while providing a physical barrier that resists tampering. The system can be designed to work with posts with arms and razor barbed wire toppings to build a complete High Security Fence System for higher-risk perimeters.
Wide Range of High-Security Applications
This fencing system is widely used for airport perimeter security, prisons and containment facilities, military zones, bridge and infrastructure protection, hospital boundary guarding, and electrical substations. It is also used for factories, walkways, shipping ports, gas pipelines, and other sites where intrusion deterrence and ongoing visibility are both required.
Durability, Materials, and Corrosion-Resistant Treatments
POLYMETAL 358 mesh panels can be manufactured using Heavy Low Carbon Wire, Heavy Mild Steel Wire, or Stainless Steel Wire to match project requirements. For corrosion resistance and lifecycle performance, available treatments include electric galvanizing, hot-dip galvanizing, PVC spraying, and PVC coating. Standard color options include Green RAL6005, Black RAL9005, and Yellow RAL1021, allowing security-grade performance without sacrificing visual integration with the surrounding environment.
Installation and Customization
POLYMETAL panels attach to steel posts using steel fixing brackets. Panels are butt-jointed at each post to maintain alignment and produce a secure, continuous perimeter line. Post options include C posts, round posts, and square posts, and the full configuration can be customized to match site conditions, security level, and installation requirements.
Packaging and Surface Treatment Protection
To protect product integrity for long-distance delivery, POLYMETAL adopts a triple packaging approach: Carton Box Covering, Plastic Film Wrapped, and Steel Pallet loading. This packaging method helps ensure the fence arrives in excellent condition even after long voyages. Posts can receive a polyester powder coating over a galvanized substrate in accordance with Euro norm 10147 for enhanced corrosion resistance.
Conclusion
POLYMETAL 358 Prison Mesh Fencing delivers high-security protection with strong anti-cut and anti-climb characteristics while maintaining clear visibility for monitoring and surveillance. With structured panel-to-post systems, robust fixing methods, multiple post options, corrosion-resistant surface treatments, and protective packaging, POLYMETAL provides a reliable fencing solution for airports, military bases, prisons, utilities, infrastructure, and other demanding security environments. If your project also includes animal enclosures or specialized perimeter zones, you can review two types of zoo aviary mesh as a related reference.
