Your One-Stop Wire Mesh Fence Supplier | POLYMETAL
POLYMETAL crimped spear garrison fence panels in 1800mm height and 3000mm width are engineered as a serious security barrier, not just decoration. This spear-crimped design turns the top of each upright into a rigid, pointed deterrent that makes climbing extremely difficult and visually reinforces the perimeter line.
Security steel garrison fence from POLYMETAL is widely used in villas, communities, gardens, schools, factories, flower beds, lawns, industrial and mining enterprises, financial institutions, sports stadiums, convention centres, squares, roads, balconies and residential projects. The flowing lines are simple and modern, delivering a clean appearance that matches contemporary architecture while still giving a strong sense of protection.
The general size range for POLYMETAL hercules security fencing includes 1500mm high x 2400mm long, 1800mm high x 2400mm long, 2100mm high x 2400mm long, 2400mm high x 2400mm long and 3000mm high x 2400mm long. On top of these popular modules, the 1800mm height x 3000mm width crimped spear garrison fence panels are offered for wider spans and fewer posts on long straight runs.
For the vertical pales and horizontal rails, typical configurations include 40x40x1.6mm pre-galvanised steel horizontal rails combined with 25x25x1.5mm pre-galvanised steel pickets/uprights. The distance between uprights can be 100mm, 110mm or 115mm depending on the security level and project requirement. Surfaces are finished by powder coating or hot-dip galvanizing, with a minimum coating thickness of 80µm to resist corrosion and abrasion on exposed sites.
All these original design details are preserved in the POLYMETAL system and extended with additional data on heights, widths, posts and coatings to create a complete, traceable profile for security projects.
11 key facts, risks and advantages you must know (especially Fact 7)
Ignoring the real data behind crimped spear garrison fence panels can turn a “good deal” into a structural and financial problem. The following eleven points give you a practical checklist of truths, risks, warnings and advantages for POLYMETAL crimped spear garrison fence panels, with Fact 7 being the one that often separates safe installations from costly failures.
Fact 1 – Panel geometry defines real security
The basic geometry of a POLYMETAL crimped spear garrison fence panel – such as 1800mm height x 3000mm width – is selected to create a non-climbable, clearly visible barrier. Heights from 1500mm up to 3000mm are available, but 1800mm and 2100mm are the most common for residential and commercial security. When combined with tight upright spacing of 100mm, the result is a boundary that is extremely difficult to scale without tools, while still allowing clear views through the fence for surveillance and aesthetic reasons.
Risk 2 – Under-sized rails are a hidden danger
A frequent danger with cheaper products is undersized horizontal rails that bend under impact or wind load. POLYMETAL uses robust rail frames such as 40x40mm, 45x45mm and 50x50mm to create a stable frame around the spear-crimped pickets. Matching rail size to fence height and width is a critical design rule: long panels like 3000mm wide sections place higher bending demands on the rails, so using a smaller rail profile would be a serious structural weakness.
Benefit 3 – Spear-crimped tops are a powerful visual and physical deterrent
The spear-crimped design is not just a styling feature; it is a security advantage. Each upright is pressed and shaped into a rigid spear profile that locks into the top rail and projects above it. This reduces the risk that intruders can grip the top of the fence, and it adds a sharp visual warning along the entire perimeter. Compared with flat-top or rounded designs, a crimped spear garrison fence panel sends a much clearer signal that the boundary is serious and controlled.
Insight 4 – Upright spacing is critical data, not decoration
The distance between uprights – 100mm, 110mm or 115mm – looks like a small detail, but it is vital security data. At 100mm spacing, it is extremely difficult for adults to get hands or feet between pickets, which sharply reduces climbing options. Wider spacings may be acceptable in low-risk areas but can create a gap that tools or small footholds can exploit. POLYMETAL normally recommends 100mm spacing for security-focused projects, especially when panel height is 1800mm or above.
Warning 5 – Coating thickness protects you from long-term loss
Surface treatment is a major point where unsuspecting buyers suffer damage and waste. Too-thin powder coating or poor-quality galvanizing allows rust to creep in at welds and cut edges. POLYMETAL specifies hot-dip galvanizing or high-quality powder coating with a minimum thickness of 80µm, backed by controlled production records. This reduces the risk of early rust marks, blistering and repainting costs that can otherwise appear only a few seasons after installation.
Danger 6 – Ignoring the width effect can become a structural trap
A 3000mm wide crimped spear garrison fence panel carries different bending forces than a 2400mm panel. Wind loading, crowd pressure and accidental impacts all increase with wider spans. If the rails, posts and foundations are not upgraded along with the width, the panel line can twist, sag or even fail. POLYMETAL treats the 1800mm x 3000mm design as a distinct configuration with matching rail size, post size and post height to avoid this hidden structural trap.
Warning 7 – Post height and section are the critical weakness in many failures
This is the most expensive lesson many buyers learn too late. Even if the panel itself is strong, undersized posts or shallow embedment are a major failure point. Fences that look fine on day one can lean, crack concrete or collapse during storms if the posts are too short or too slender.
POLYMETAL therefore links each crimped spear garrison fence panel – including 1800mm and 3000mm wide versions – to a recommended post height and post section such as 60x60mm, 65x65mm, 75x75mm, 80x80mm or 100x100mm. The post height is chosen to give enough embedment into concrete or footing blocks, not just to reach the top of the panel. Treating post selection as a core design element rather than an afterthought is the key warning that protects you from tilting lines, broken concrete and warranty disputes.
Advantage 8 – Pre-galvanised material gives a long-term edge
Using pre-galvanised steel (such as 40x40x1.6mm rails and 25x25x1.5mm uprights) before welding and finishing provides a strong corrosion-resistance advantage. POLYMETAL combines this base protection with final powder coating or hot-dip galvanizing so that cuts, welds and crimped spear points are fully covered. This layered protection reduces maintenance cost, avoids unsightly surface rust, and extends the life of rental fleets and permanent installations.
Tip 9 – Colour and finish are part of the security message
A crimped spear garrison fence panel is not only a physical barrier but also a visual signal. Dark colours such as black and charcoal help the fence blend into landscaping while still looking modern and strict. Light or bright colours can be used around schools, villas or gardens to maintain a friendly appearance without losing the security advantage of the spear-crimped profile. Choosing the right finish is a practical tip to align security level, brand image and neighbourhood expectations.
Lesson 10 – Poor packing leads directly to coating damage
Many transport damages start before the fence is even installed. Panels that are stacked without spacers, edge protection or wrapping frequently arrive with scratched powder coating and chipped spear tips. POLYMETAL designs packing methods so that each crimped spear garrison fence panel stack is separated, strapped and wrapped in a predictable way. This reduces the risk of invisible micro-damage that later becomes rust staining or unexpected repainting work.
Reward 11 – Compatibility protects your long-term investment
A garrison fence line is rarely just a straight run. Gates, corners, steps, slopes and transitions to walls must all be handled cleanly. POLYMETAL crimped spear garrison fence panels are designed so that standard heights, widths, posts and accessories work together as a complete system. This compatibility is a major benefit: it keeps installation fast, makes future extensions easy, and protects the long-term value of your investment in posts, panels and gates.
Detailed product description (no bullet format)
POLYMETAL security steel garrison fence panels are available in a core height range from 1500mm to 3000mm combined with 2400mm or 3000mm panel widths, including the key 1800mm height x 3000mm width spear-crimped design. Each panel uses one or more horizontal rails, most commonly manufactured from 40x40x1.6mm pre-galvanised steel. These rails support a series of vertical pickets, often 25x25x1.5mm pre-galvanised uprights, which are crimped and speared at the top and welded through or on top of the rails.
Spacing between uprights is typically 100mm for high-security applications, with options for 110mm or 115mm where visibility or material savings are prioritised. The spear-crimped pickets create an anti-climb profile that is far more difficult to grip or stand on compared with flat-top designs. This vigorous profile, combined with overall panel heights of 1800mm and above, reinforces the psychological and physical barrier around the site.
All steel surfaces are treated using either a full hot-dip galvanizing process or a polyester powder coating applied over pre-galvanised material. With a minimum coating thickness of 80µm, the system is designed to resist corrosion in outdoor environments including coastal regions, industrial areas and high UV exposure zones. The final effect is a fence line that delivers both a clean, modern aesthetic and dependable protection throughout its service life.
SPECIFICATIONS IN TABLE – Series 1: Standard residential panels
| Fence Height (mm) | Fence Width (mm) | Rail Frame (mm) | Upright (mm) | Upright Spacing (mm) | Post Height (mm) | Post Section (mm) |
|---|---|---|---|---|---|---|
| 1200 | 2400 | 40×40 | 25×25 | 100 | 1800 | 60×60 |
| 1350 | 2400 | 40×40 | 25×25 | 100 | 1800 | 60×60 |
| 1500 | 2400 | 40×40 | 25×25 | 100 | 2100 | 65×65 |
| 1650 | 2400 | 40×40 | 25×25 | 100 | 2400 | 65×65 |
| 1800 | 2400 | 40×40 | 25×25 | 100 | 2400 | 65×65 |
| 1950 | 2400 | 40×40 | 25×25 | 100 | 2600 | 65×65 |
| 2100 | 2400 | 40×40 | 25×25 | 100 | 2700 | 75×75 |
| 2250 | 2400 | 40×40 | 25×25 | 100 | 2900 | 75×75 |
| 2400 | 2400 | 40×40 | 25×25 | 100 | 3000 | 75×75 |
| 3000 | 2400 | 40×40 | 25×25 | 100 | 3600 | 75×75 |
SPECIFICATIONS IN TABLE – Series 2: Wide 3000mm panels (including 1800 x 3000)
| Fence Height (mm) | Fence Width (mm) | Rail Frame (mm) | Upright (mm) | Upright Spacing (mm) | Post Height (mm) | Post Section (mm) |
|---|---|---|---|---|---|---|
| 1200 | 3000 | 40×40 | 25×25 | 100 | 2100 | 65×65 |
| 1350 | 3000 | 40×40 | 25×25 | 100 | 2100 | 65×65 |
| 1500 | 3000 | 40×40 | 25×25 | 100 | 2400 | 65×65 |
| 1650 | 3000 | 40×40 | 25×25 | 100 | 2400 | 75×75 |
| 1800 | 3000 | 40×40 | 25×25 | 100 | 2400 | 75×75 |
| 1950 | 3000 | 40×40 | 25×25 | 100 | 2600 | 75×75 |
| 2100 | 3000 | 40×40 | 25×25 | 100 | 2700 | 75×75 |
| 2250 | 3000 | 40×40 | 25×25 | 100 | 2900 | 80×80 |
| 2400 | 3000 | 40×40 | 25×25 | 100 | 3000 | 80×80 |
| 2700 | 3000 | 40×40 | 25×25 | 100 | 3300 | 80×80 |
SPECIFICATIONS IN TABLE – Series 3: Heavy-duty 45×45 rail system
| Fence Height (mm) | Fence Width (mm) | Rail Frame (mm) | Upright (mm) | Upright Spacing (mm) | Post Height (mm) | Post Section (mm) |
|---|---|---|---|---|---|---|
| 1500 | 2400 | 45×45 | 30×30 | 100 | 2400 | 75×75 |
| 1650 | 2400 | 45×45 | 30×30 | 100 | 2400 | 75×75 |
| 1800 | 2400 | 45×45 | 30×30 | 100 | 2600 | 75×75 |
| 1950 | 2400 | 45×45 | 30×30 | 100 | 2600 | 80×80 |
| 2100 | 2400 | 45×45 | 30×30 | 100 | 2700 | 80×80 |
| 2250 | 2400 | 45×45 | 30×30 | 100 | 2900 | 80×80 |
| 2400 | 2400 | 45×45 | 30×30 | 100 | 3000 | 80×80 |
| 2700 | 2400 | 45×45 | 30×30 | 100 | 3300 | 100×100 |
| 3000 | 2400 | 45×45 | 30×30 | 100 | 3600 | 100×100 |
| 2400 | 3000 | 45×45 | 30×30 | 100 | 3200 | 100×100 |
SPECIFICATIONS IN TABLE – Series 4: Maximum security 50×50 rail system
| Fence Height (mm) | Fence Width (mm) | Rail Frame (mm) | Upright (mm) | Upright Spacing (mm) | Post Height (mm) | Post Section (mm) |
|---|---|---|---|---|---|---|
| 1800 | 2400 | 50×50 | 30×30 | 100 | 2600 | 80×80 |
| 2100 | 2400 | 50×50 | 30×30 | 100 | 3000 | 80×80 |
| 2400 | 2400 | 50×50 | 30×30 | 100 | 3200 | 100×100 |
| 2700 | 2400 | 50×50 | 30×30 | 100 | 3600 | 100×100 |
| 3000 | 2400 | 50×50 | 30×30 | 100 | 3800 | 100×100 |
| 1800 | 3000 | 50×50 | 16×16 | 100 | 2600 | 80×80 |
| 2100 | 3000 | 50×50 | 16×16 | 100 | 3000 | 100×100 |
| 2400 | 3000 | 50×50 | 16×16 | 100 | 3300 | 100×100 |
| 2700 | 3000 | 50×50 | 16×16 | 100 | 3600 | 100×100 |
| 3000 | 3000 | 50×50 | 16×16 | 100 | 4000 | 100×100 |
These four tables give a structured overview of typical POLYMETAL crimped spear garrison fence panel options, linking each fence height and width to the appropriate rail frame, upright size, upright spacing, post height and post section.
Packing
POLYMETAL designs packing for crimped spear garrison fence panels to minimise transport hazard and coating damage. Panels are stacked in aligned bundles with spear-crimped tops protected by timber or plastic edge guards. Spacers between layers keep the powder-coated or galvanized surfaces from rubbing against each other. Heavy-duty steel or polyester straps secure the stack, and a final wrap of film or woven fabric protects against dust, moisture and minor impact.
Posts, brackets and fasteners are packed separately in clearly labelled bundles or cartons. Post caps, bolts and anti-tamper fixings are grouped so site crews can quickly identify each component. This controlled packing pattern avoids confusion on site, reduces the risk of missing parts, and keeps the visual finish of POLYMETAL crimped spear garrison fence panels intact from factory to installation.
Production process
The production process for POLYMETAL crimped spear garrison fence panels follows a clear series of steps designed to remove errors and defects.
First, pre-galvanised steel tube is cut to length for rails, uprights and posts using calibrated cutting equipment that maintains tight length tolerances. Next, pickets are formed and spear-crimped at one end to create the characteristic pointed profile. Holes or notches are prepared in the rails where required, so uprights can be welded consistently along each line.
Welding operations follow defined procedures that control weld length, position and penetration. Frames are assembled in jigs to keep each panel square and ensure consistent upright spacing, particularly where 100mm centres are specified for high security. After welding, spatter and sharp edges are removed, and the panels are inspected for straightness, diagonals and visible flaws.
Depending on the chosen finish, panels and posts then go through either a hot-dip galvanizing bath or a multi-stage powder coating line. The powder coating process includes cleaning, rinsing, drying and electrostatic powder application, followed by curing at controlled temperature and time to achieve the specified minimum 80µm coating thickness. Final inspection checks coating adhesion, gloss, colour, spear shape and weld quality before the fence components are packed and released.
Throughout this production process, POLYMETAL maintains internal records of material data, cutting lists, welding parameters, galvanizing or coating batches, inspection results and packing instructions. This complete profile provides a traceable outline of how each crimped spear garrison fence panel is manufactured and how it is intended to perform on site.
Standard and compliance
POLYMETAL crimped spear garrison fence panels are designed to align with widely recognised principles for construction safety, site perimeter control and temporary or permanent works. Panel height, width, frame tube size, wall thickness, mesh-free spacing, spear shape and base or post configuration are treated as linked elements, not isolated choices, and are typically manufactured from robust Q235 steel. The aim is to deliver a safe, stable, non-climbable and clearly visible boundary that fits into project-specific safety plans and risk assessments.
Where relevant, design and testing reference common standards for welded steel fencing, protective coatings, galvanizing thickness and powder coating performance. Internal quality rules treat factors such as rail deflection, weld penetration and coating thickness as measurable data, rather than vague promises. This disciplined approach reduces the chance of loopholes, oversights and missteps that can turn a fence line into a source of loss or liability.
By combining controlled materials, documented processes and clearly defined specifications for posts, rails and spear-crimped uprights, POLYMETAL delivers crimped spear garrison fence panels that are not only visually modern but also engineered to protect people, property and long-term investment.
