Traffic guardrail

Traffic guardrails are the core infrastructure that ensures road traffic order and safety. With "isolation and diversion, collision protection, warning and guidance" as the core functions, they are made of high-strength substrates such as steel and aluminum alloy, and processed through welding, anti-corrosion, and forming processes. Its structural design adapts to the safety requirements of different traffic scenarios, effectively separating motor vehicle lanes, non motor vehicle lanes, and sidewalks, blocking vehicles from changing lanes and pedestrians from crossing the road, reducing the incidence of traffic accidents, and improving road traffic efficiency through clear visual guidance. Widely used in various traffic scenarios such as urban roads, highways, bridges and tunnels, intersections and ramps, it is a "rigid barrier" to maintain traffic order and ensure the safety of people and vehicles.

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Description and application
Parameters

Stable structure and excellent anti-collision performance

The core adopts a "horizontal bar+vertical bar" reinforcement, integral welding or modular splicing design. Some high-risk scenarios (such as highways and expressways) use reinforced structures such as corrugated beams and anti-collision columns, which can withstand the impact force of vehicles of different tonnages (in accordance with the GB/T 26941 series traffic guardrail standards), and are not easily scattered or deformed after impact, effectively buffering the impact force and reducing the degree of accident injuries.
Corrosion resistant and durable, suitable for complex environments

The substrate is mainly made of Q235 low-carbon steel and galvanized steel, and high-end models use aluminum alloy or stainless steel. The surface is treated with dual anti-corrosion treatments such as hot-dip galvanizing, electrostatic spraying, and hot-dip molding, which can resist the erosion of rainwater, ice and snow, ultraviolet rays, and acidic and alkaline substances (such as coastal salt spray and road snow melting agents). The normal service life can reach 6-12 years in harsh outdoor environments, with low maintenance frequency and low cost.
Clear warning and strong guidance: The color scheme is mainly high visibility tones (such as white, yellow, blue), and some styles are equipped with reflective film, reflective strips, or night light coatings. During the day, the road boundary is defined by vivid colors, and at night, the light of the headlights is reflected to improve the recognition of the guardrail, helping drivers quickly judge the lane range, especially suitable for complex scenes such as intersections, ramps, tunnel entrances and exits.
Efficient installation and wide adaptability

Using standardized modular production, the conventional length of a single section is 2-4m, which can be quickly spliced and extended to meet different road length requirements; The fixed method is flexible, supporting pre embedded (permanent installation, such as main roads and bridges), expansion bolt fixation (hardened road surface, such as secondary roads), and mobile base (temporary control, such as construction sections and activity diversion), which can meet the installation conditions of various traffic scenarios.
Economical and practical, with high cost-effectiveness

The material selection takes into account both strength and cost. Low carbon steel is suitable for large-scale municipal projects, while aluminum alloy is lightweight, easy to install, and has high recycling value; Post maintenance is simple, only requiring regular cleaning of surface stains. Local damage can be replaced with individual modules without the need for complete disassembly, reducing maintenance costs.
Urban road scenarios:

separation of motor vehicle lanes and non motor vehicle lanes on urban main roads, secondary roads, and branch roads, median barriers on roads, and protection of pedestrian boundaries; The diversion and isolation of intersections, roundabouts, and bus lanes regulate traffic flow and avoid mixed traffic and illegal crossings.
Highway/Expressway Scene:

Central median strip of highway, boundary of emergency lane, and isolation of entrance and exit ramps; Expressway crash barriers are designed to resist high-speed collisions from vehicles, prevent them from rushing out of the road or entering the opposite lane, and ensure the safety of high-speed traffic.
Bridge and Tunnel Scenarios:

Protective guardrails on both sides of the bridge, transition guardrails at tunnel entrances and exits, adapted to the high-altitude environment of the bridge and the characteristics of insufficient tunnel lighting, strengthen protection and warning effects; The guardrails for cross sea/cross river bridges should be made of salt spray resistant materials to enhance durability.
Special traffic scenario:

Temporary isolation barriers (mobile) on construction roads to guide vehicles to detour; Road guardrails (raised and reflective strips) around schools, hospitals, and commercial districts to ensure safety in densely populated pedestrian areas; Scenic area roads and township road guardrails (economic type), suitable for the protection needs of low traffic scenarios.
Other supporting scenarios:

isolation of parking lot entrances and exits, lane separation at toll stations, internal road protection within the park, etc., extending the practical scope of traffic barriers.

Core material: The main structure is made of Q235 low carbon steel and hot-dip galvanized steel (conventional version); Aluminum alloy, 304 stainless steel (high-end version); Q235 strip steel for waveform beam guardrail

Size specifications:

Height: sidewalk guardrail 60-100cm; motor vehicle lane isolation guardrail 80-120cm; highway/bridge guardrail 120-150cm

Single segment width: 200cm, 300cm, 400cm (customizable)

Structural details:

Vertical pole: diameter 14-20mm round steel or 20 × 20mm, 25 × 25mm square steel, spacing 10-15cm

Horizontal bar: 1-2 pieces each, with specifications of 40 × 40mm, 50 × 50mm square steel or 32mm, 42mm round steel; The width of the waveform beam guardrail plate is 310mm, 432mm, and the thickness is 2.5-4.0mm

Column: circular column with diameters of 48mm and 60mm; Square columns with dimensions of 50 × 50mm and 60 × 60mm; corrugated beam guardrail columns with diameters of 114mm and 140mm

Surface treatment: hot-dip galvanizing+electrostatic spraying (mainstream), hot-dip molding, fluorocarbon spraying (corrosion resistant upgraded version)

Color: White (RAL9010), Yellow (RAL1023), Blue (RAL5010), Dark Grey (RAL7016), supports customized traffic specific colors

Latest News

What are the important functions of municipal guardrails？

Municipal road guardrails are also known as urban traffic galvanized spray coated steel guardrails. It is beautiful, innovative, easy to install, safe and reliable, and has a favorable price. It is applicable to the isolation of urban traffic arteries, highway median greenbelts, bridges, second-class highway, township roads and toll gates of various highways. Municipal guardrails are currently one of the most popular road isolation guardrails both domestically and internationally. Mainly used for site isolation belts, municipal engineering isolation belts, and garden guardrails. Isolation and protection of parks, lawns, zoos, lakes, roads, and residential areas in municipal construction; Protection and decoration of hotels, restaurants, supermarkets, and entertainment venues. The central isolation barrier in municipal guardrails mainly serves to separate opposing lanes and provide warning and protection. The mechanical and non mechanical isolation barriers mainly separate the motor vehicle lane from the non motor vehicle lane, while the pedestrian barrier mainly separates the motor vehicle lane from the sidewalk, reducing and preventing accidents and ensuring everyone’s safety. At the same time, many places have installed municipal guardrails with regional cultural characteristics, which play a good role in beautifying the city and promoting urban culture!

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December 17, 2025

What are the specific parameters and uses of municipal guardrails？

Municipal guardrails are a type of municipal facility that we often see, but we don’t know much about the specific parameters and uses of this type of municipal facility. We just think that this type of guardrail has a certain degree of aesthetics, strength, and impact resistance. Everyone thinks that this type of guardrail is not a big deal. In fact, this type of guardrail has been carefully designed to meet the corresponding requirements in terms of performance parameters, otherwise it cannot be put into specific use. Therefore, we will briefly introduce the common parameter characteristics of the guardrail’s use. The most common type of municipal guardrail is the blue and white version. The common parameters for this type of guardrail are a height of 1.2 meters and a length of 3.08 meters. In addition, there are also 0.8 meters and 1 meter high ones. This type of guardrail has good anti-corrosion performance and is very easy to install. It is widely used in municipal roads in many cities, serving both as a barrier and a decorative effect. One of the most common types of municipal guardrail products is the guardrail net. Northerners like to call it this name, but friends in the south generally refer to it directly as the enclosure fence. This type of guardrail is more commonly used in airports or sports stadiums. According to its desired specific form, it can be divided into different mesh structures such as wave mesh or frame mesh. Its parameters mainly have two aspects. The first parameter is the mesh aperture. Nowadays, most mesh apertures are 75150, and the frame parameters are mainly 20301.5, which are more commonly used. Another type of guardrail is a triangular guardrail, with a size of 50180. If it is a triangular guardrail with columns, the size is generally 2.32.9. Its main feature is its good strength, and the rigidity of this guardrail is also very good. In terms of appearance, it not only serves as a barrier or obstruction, but also does not have to worry about affecting the vision. You can directly see the opposite scene through the guardrail, which is often used in some traffic tunnels that need to be closed. This product can be processed through certain techniques to give it different colors or shapes, such as some being yellow, while others are green or red.

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December 17, 2025

Why are zinc steel guardrails suitable for making fence guardrails?

Zinc steel guardrails, also known as wrought iron guardrails, are made of galvanized pipes and coated with paint on the surface. They have won people’s love for their strong corrosion resistance and beauty. There are generally two types of installation methods for zinc steel guardrails as fence protection: pre embedded installation and tray installation. Pre embedded installation requires advance preparation or the use of direct drilling methods for installation. Regardless of which method is used, cement slurry must be poured into the column to fill the gaps and prevent the guardrail from shaking. Tray installation is carried out by inserting expansion bolts into flat ground, brick walls, and other surfaces. The key to this installation is to level and maintain a consistent line during installation. There are many application scenarios for zinc steel guardrails, which can be used for municipal road barrier protection, beautification protection, factory barrier, airport barrier enclosure, station personnel diversion, etc. What’s remarkable is that zinc steel guardrails provide an ideal solution for wall protection. The primary use of zinc steel guardrails is for fence protection, and the main stream in fence guardrails is also for it, so zinc steel guardrails are fence guardrails. In the 1990s, the walls of residential areas, campuses, factories, etc. were mostly brick walls or concrete walls. Although the walls were reinforced, they took up a lot of space, had poor visual appeal, were time-consuming and difficult to construct, and could not be recycled or reused. These defects gradually emerged with the use of these walls, especially with the change in people’s aesthetics. Diversity and beauty have become increasingly important, and old walls are no longer popular. In the late 1990s, with the rise of iron fences, wall guardrails emerged. Initially, they were cast iron fences with painted surfaces. However, due to their heavy weight, production, transportation, installation, price, and corrosion resistance, their use gradually decreased and they were later abandoned by users. Gradually replaced by simple and inexpensive zinc steel guardrails, this type of zinc steel fence guardrail uses two layers of anti-corrosion treatment on the inside and outside, and the color of the exterior can also be freely selected, greatly improving its beauty. It is also very easy to install, directly assembled on site, saving a lot of transportation costs. The ultra-high cost-effectiveness has won the love of a large number of customers.

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