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Help CenterModular Municipal Guardrail With 3.5 Meter Pole Spacing and 4-Bolt Fixing System for Urban Roads
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At Anping Xinye Metal Wire Mesh Products Co., Ltd, we engineer modular municipal guardrails that protect urban road users while keeping installation simple and cost-effective. Our modular municipal guardrail with 3.5-meter pole spacing and a 4-bolt fixing system is built for city environments, offering reliable impact resistance and long service life. Each component is manufactured under strict quality control to ensure consistent dimensions and easy assembly. Whether for traffic separation, pedestrian safety, or area demarcation, this guardrail delivers a professional solution for municipalities and contractors.
Product Overview
The modular municipal guardrail is a segmental barrier system designed to be installed along urban roads, sidewalks, parking lots, and public spaces. It uses a standard 3.5-meter pole spacing, which optimizes material usage while providing stable support. The 4-bolt fixing system firmly connects each panel to the post, reducing vibration and preventing accidental disassembly. This combination makes the guardrail suitable for permanent installations that must withstand daily use and minor impacts.
Key Features and Benefits
- Modular design: Each section is independent, making it easy to transport, handle, and replace if a segment is damaged. You do not need to remove the entire line when one panel fails.
- 3.5 m pole spacing: Reduces the number of posts required per meter compared to 2.0 m spacing, lowering material costs while still maintaining adequate strength for urban traffic conditions.
- 4-bolt fixing system: Four high-strength bolts are used at each connection point, providing a stable and rigid connection that resists loosening from vibration and weather.
- Durable steel construction: The guardrail is formed from quality steel sections, with wall thicknesses that can be selected according to the required impact level. Different steel grades are available upon request.
- Surface treatment options: To ensure a long lifespan in outdoor environments, the guardrail can be supplied with a hot-dip galvanized finish, powder coating, or a combined treatment. These options are available on request, depending on your local climate and aesthetic needs.
- Fast installation: Pre-drilled panels and posts allow quick bolting on site. The modular system can be installed without specialized heavy machinery, reducing labor time and downtime for road works.
- Low maintenance: Because all fasteners are exposed and each module can be replaced independently, maintenance work is straightforward. A galvanized or coated finish also minimizes corrosion.
- Versatile application: The guardrail is suitable for urban roads, highway service areas, airport perimeters, industrial zones, and public parks. Optional reflectors can be mounted on the rail to improve night visibility.
Technical Specifications
| Parameter | Value |
| Pole spacing | 3.5 m |
| Fixing system | 4-bolt connection |
| Material | High-strength steel (grade optional) |
| Module length | Customizable, typically 2000–3000 mm |
| Height | Customizable, typically 600–1200 mm |
| Post section | Round or rectangular tube, optional |
| Surface finish | Hot-dip galvanized, powder coated, or as required |
| Application | Urban roads, parking lots, pedestrian walkways |
Detailed Design and Construction
The guardrail consists of standardized steel posts and rail panels. Each panel is pre-punched with four holes at each end that align with the post's mounting bracket. This 4-bolt configuration distributes impact forces across a wider area, which helps prevent bending or shearing of the connection. The 3.5-meter post spacing is a balanced choice: it is wider than heavy-duty highway barriers but narrower than simple fencing, making it economical for municipal applications where moderate impact protection is needed.
The modular segments are manufactured with precision jigs, guaranteeing that every hole aligns with its counterpart. On site, workers simply place the post in a prepared foundation, align the panel, and tighten the four bolts using standard tools. If a section is damaged by a vehicle, only that module needs to be replaced, which reduces repair costs and keeps traffic disruptions to a minimum.
Materials and Finishes
We supply the guardrail in carbon steel grades that are common for outdoor metal fabrications. For coastal cities or areas with high humidity, the hot-dip galvanized finish is recommended because it creates a sacrificial zinc layer that protects the underlying steel. For projects with architectural requirements, a powder-coated finish in different colors is available upon request. All fasteners are also galvanized or otherwise corrosion-resistant to match the service life of the guardrail.
Quality Control and Assurance
Every batch of guardrail is inspected during the manufacturing process. Dimensional checks are performed on post height, hole spacing, and panel length. Welds are visually inspected for cracks or incomplete fusion. A sample from each production run is assembled on-site to verify that the 4-bolt fixing aligns correctly. Surface coating thickness is measured with a gauge to ensure consistent protection. These measures help minimize installation problems and ensure that the delivered product meets your expectations.
Installation Guidelines
- Prepare the ground: Mark the positions of the posts according to the 3.5-meter spacing. Excavate holes or use a pre-cast concrete base.
- Install the posts: Set the posts in the concrete foundation, ensuring vertical alignment and correct height. Wait for the concrete to cure.
- Attach the panels: Lift the first panel and align the four pre-drilled holes with the post bracket. Insert the bolts and tighten using a torque wrench.
- Continue the line: Repeat the process for subsequent modules. Optional rail connections can be used for continuous runs.
- Inspect: Check that all bolts are tight and the guardrail line is straight.
Maintenance is simple. Periodically check the tightness of the bolts and inspect the surface for scratches. Any missing or damaged bolts can be replaced without removing the entire panel. If the coating is damaged, touch-up paint can be applied.
Where to Use This Guardrail
The 3.5-meter pole spacing makes it particularly suitable for low- to medium-speed urban roads, where the main function is to guide traffic and protect pedestrians rather than to withstand highway-speed impacts. It is commonly used in:
- City road median separation
- Sidewalk edge protection
- Parking lot perimeter barriers
- Bus lanes and bicycle lane demarcation
- School and park perimeters
- Temporary traffic management zones
Customization Options
We recognize that every municipality has unique requirements. Our factory can provide:
- Different post sections: round pipe, square tube, or H-section.
- Rail panel profiles: flat, corrugated, or with a mounting channel for reflectors.
- Color options: standard traffic white, yellow, or any color according to RAL chart.
- Reflector strips: adhesive or bolt-on reflectors for high-visibility.
- Foundation types: for bolted base plates or embedded posts.
- Additional accessories: end caps, transition pieces, or gates.
These options allow you to tailor the guardrail to your specific site and budget. Just inform our sales team about your project details, and we will recommend a suitable configuration.
Company Backing and Export Support
Anping Xinye Metal Wire Mesh Products Co., Ltd is a manufacturer with a production base of 5,000 to 10,000 square meters in Hengshui, Hebei, China. Our team of 51 to 100 employees focuses on metal wire mesh and guardrail products. We ship through the ports of Tianjin, Qingdao, and Shanghai, which provides efficient logistics to customers in North America, South America, Europe, Southeast Asia, Africa, the Middle East, and Oceania. We welcome inquiries for custom lengths, colors, and packaging. Our factory can adjust production to match project schedules and offer competitive pricing for both standard and custom specifications.
Contact us for more details or to request a quote. With our modular municipal guardrail, you can improve the safety and appearance of urban roads while controlling installation and maintenance costs.
Frequently Asked Questions
Q: What is the standard pole spacing of this guardrail?
A: The standard pole spacing is 3.5 meters. This distance balances structural support with material efficiency, reducing the number of posts needed compared to closer spacing.
Q: How does the 4-bolt fixing system work?
A: Each panel is connected to the post through four high-strength bolts that pass through pre-drilled holes in the panel and the post bracket. The four-point connection provides a stable and rigid joint that resists vibration and impact.
Q: Can the guardrail be customized in terms of length and height?
A: Yes. The module length and height can be adjusted to meet your project requirements. Typical lengths are 2000 to 3000 mm, and heights range from 600 to 1200 mm, but other sizes are available upon request.
Q: What materials are used to produce the guardrail?
A: We use quality carbon steel for both posts and panels. The grade can be selected based on the required strength and environmental conditions. Stainless steel can also be considered for special applications.
Q: What surface treatments are available?
A: We offer hot-dip galvanizing, powder coating in multiple colors, and a combination of both. The recommended treatment depends on your local climate and aesthetic preference.
Q: How long does installation take?
A: Because the modules arrive pre-drilled and ready for assembly, installation is fast. A small crew can install dozens of modules per day once the concrete foundations are ready.
Q: Is this guardrail suitable for curves or slopes?
A: The modular design allows for slight adjustments in alignment. For curved sections, optional flexible connectors or shorter modules can be used to follow the road geometry.
Q: Do you provide export packing and shipping services?
A: Yes, we pack the guardrail with steel straps and protective wrapping for export. We ship from Tianjin, Qingdao, or Shanghai ports with solid documentation.
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