Composite steel grating is a new type of functional building material, which is created through a professional composite process that combines high-strength steel grating with different materials such as fiberglass, corrosion-resistant alloys, and anti-slip rubber. It precisely integrates the advantages of various base materials, retaining the structural strength and stability of steel grating while also incorporating the corrosion resistance, anti-slip, insulation, and other characteristics of other materials. Ultimately, it forms a product with advantages of “high strength, strong adaptability, and wide scene coverage”, and is widely used in various fields such as industry, municipal administration, construction, petrochemicals, and marine
I. Industrial field: Support high-intensity operation scenarios
Industrial settings have extremely high requirements for the load-bearing capacity and wear resistance of building materials. Composite steel grating, with its stable structural performance, has become a core application material
Factory workshop: In workshops for mechanical manufacturing, automobile assembly, heavy equipment production, etc., composite steel grating is mainly used for work platforms, equipment maintenance passages, and stair treads. Taking mechanical manufacturing factories as an example, the frequent equipment handling and heavy component assembly in the workshop require platforms to withstand an instantaneous pressure of 5-10 tons per square meter, which can be easily met by the load-bearing structure of the composite steel grating’s grid. At the same time, its surface anti-slip pattern design (pattern depth ≥1.5mm) can effectively prevent workers from slipping due to oil stains and cooling fluid, ensuring operational safety
Mining industry: Underground mines are damp and dusty, and contain corrosive gases such as sulfides. In this scenario, composite steel grating is mainly used for mine ventilation tunnel covers, drainage system grilles, and ore screening platforms. Its surface is treated with hot-dip galvanizing and anti-corrosion coating, which can withstand the erosion of corrosive gases underground, with a service life of over 15 years. In the ore screening process, the customized grid spacing (adjustable from 50-100mm) can precisely meet the screening needs of ores with different particle sizes, while the grid structure is not prone to mineral accumulation, reducing the frequency of manual cleaning
Power industry: In thermal power plants, substations, and new energy power stations, composite steel grating is used for main equipment platforms (such as turbine and transformer foundation platforms), cable tray covers, and cooling tower walkways. The transformer platform in a substation needs to withstand the weight of equipment weighing over 30 tons, and the load-bearing strength of composite steel grating can meet long-term stable support. When used as a cable tray cover, its sealing and insulating coating (optional) can prevent rainwater and foreign objects from entering the tray, avoid cable short circuits, and ensure stable power transmission
II. Municipal engineering field: ensuring the safety of urban operations
Municipal engineering is directly related to urban public safety and people’s livelihood needs. Compound steel grating, with its characteristics of “safety, durability, and ease of maintenance”, is suitable for multiple municipal scenarios:
Urban roads: The core applications include rainwater manhole covers, drainage ditch covers, and access covers for underground utility tunnels. Traditional cast iron manhole covers are prone to theft and have insufficient load-bearing capacity (mostly below 10 tons). In contrast, composite steel grating manhole covers adopt a “steel grating + concrete filling” structure, with a load-bearing capacity of 20-30 tons (meeting the requirements for heavy vehicles to pass through). Additionally, the material has no recycling value, effectively eliminating theft at its source. The grid spacing of drainage ditch covers is designed to be 20-30mm, which not only allows for rapid rainwater drainage (drainage rate ≥0.5m³/min) but also prevents pedestrian feet and debris from falling in
Bridge engineering: It is primarily used for anti-slip pavement on bridge decks (in specific areas), bridge maintenance access, and protective railings for bridge piers. In slippery sections such as bridge approaches and curves, the anti-slip coefficient of composite steel grating reaches 0.8 (dry state) and 0.6 (wet state), which is significantly higher than that of ordinary asphalt pavement (0.4-0.5). This effectively reduces the risk of vehicle skidding during rainy weather. The maintenance access adopts lightweight composite steel grating (30% lighter than traditional steel), which facilitates daily inspections by staff and reduces the overall load on the bridge
Wastewater treatment plant: Widely used in aeration tank platforms, sedimentation tank covers, and sludge treatment workshop floors. The water in the wastewater treatment plant contains a large amount of organic matter and acid-base substances. The anti-corrosion coating (such as vinyl ester resin coating) of composite steel grating can resist water erosion and remains rust-free after long-term use. The sedimentation tank cover adopts a sealed composite structure, which not only prevents the spread of sewage odor but also facilitates equipment maintenance through reserved access holes, balancing practicality and environmental protection
III. Architecture: Balancing functional and aesthetic needs
In construction engineering, composite steel grating not only meets structural safety requirements but also adapts to aesthetic needs in different scenarios:
Commercial buildings: In places such as shopping malls, shopping centers, and office buildings, they are used for stair treads, atrium guardrails, and underground garage ramps. The stair treads in commercial buildings need to be both anti-slip and aesthetically pleasing. Composite steel grating can be customized in versatile colors such as matte black and light gray, with a fine anti-slip surface texture (to avoid tripping pedestrians). At the same time, the grid structure is lightweight and transparent, without blocking the light from the lower level space. The underground garage ramp adopts a combination of “composite steel grating + anti-slip rubber strip”, with an anti-slip coefficient of over 0.7, solving the problem of traditional ramps being prone to slipping in rainy weather
Residential buildings: Primarily used for basement ventilation cover plates, roof terrace floors, and fire escapes in upscale residential areas. The basement ventilation cover plates utilize anti-theft composite steel grating with a grid spacing of 10-15mm, ensuring both ventilation (meeting the air circulation needs of the basement) and preventing children from climbing and foreign objects from falling. The roof terrace floors employ anti-corrosion composite steel grating, which can be directly laid above the waterproof layer, avoiding the water accumulation issues caused by traditional tile paving. Additionally, the grid structure facilitates rainwater infiltration, protecting the roof waterproof layer
Sports venues: used for the anti-slip layer of stand steps, the flooring of athlete rest areas, and the maintenance walkways on the roof of the venue. The stands in sports venues experience high pedestrian traffic, making step anti-slip crucial. The anti-slip pattern of composite steel grating is ergonomically designed, with rounded edges on the steps to reduce the risk of pedestrian tripping. The flooring of athlete rest areas uses antibacterial composite steel grating (coated with an antibacterial layer), which is easy to clean, wear-resistant, and meets high-frequency use and hygiene requirements
IV. Petrochemical industry: Resistance to complex chemical environments
In the petrochemical industry, where extreme conditions such as high temperature, high pressure, and strong corrosion exist, the weather resistance and safety of composite steel grating become core advantages:
Refinery: Used for reaction unit operating platforms, fire dike cover plates in the oil tank area, and oil pipeline supports. The operating platforms in the refinery need to withstand high temperatures (up to 80-100°C in some areas) and oil and gas erosion. The composite steel grating adopts high-temperature resistant and anti-corrosive coatings (such as polytetrafluoroethylene coating), which can be stably used in an environment ranging from -20°C to 120°C. The fire dike cover plate adopts fire-resistant composite steel grating (with flame retardant added), with a Class A combustion performance, which can effectively prevent the spread of fire and ensure the safety of the oil tank area
Chemical enterprises: Primarily used for reaction kettle platforms, chemical storage tank area pathways, and covers for acid-base wastewater treatment ponds. The reaction kettle platforms in chemical enterprises often come into contact with strong acids (such as sulfuric acid and hydrochloric acid) and strong alkalis (such as sodium hydroxide). The corrosion resistance of composite steel grating (no significant corrosion after being immersed in a 5% sulfuric acid solution for 1000 hours) can meet long-term use requirements. The pathways in the chemical storage tank area utilize anti-slip composite steel grating, which maintains good anti-slip performance even if there is a small amount of chemical liquid residue on the ground, ensuring the safety of workers’ walking
V. Marine field: adapting to high-salt and high-humidity environments
The marine environment is characterized by high salt spray, strong wind and waves, and high humidity, which imposes stringent requirements on the corrosion resistance and wind and wave resistance of building materials. Composite steel grating performs exceptionally well in this scenario:
Wharf engineering: used for wharf trestle floors, cargo stacking area platforms, and breakwater protective railings. The wharf trestle is exposed to seawater for a long time, and salt spray corrosion is intense. The composite steel grating adopts a dual anti-corrosion treatment of “hot-dip galvanizing + sealing coating”, with a salt spray resistance of over 1000 hours (far exceeding the 200 hours of ordinary steel). The cargo stacking area platform can bear a load of up to 50 tons, meeting the parking needs of containers and heavy-duty loading and unloading equipment. At the same time, the grid structure facilitates the draining of seawater, preventing the cargo from being affected by moisture
Offshore platforms: In offshore oil extraction platforms and marine observation platforms, they are used for deck floors, equipment platforms, and personnel passageways. Offshore platforms face extreme conditions such as typhoons and wave impacts. The structural strength of composite steel grating (with a wind pressure resistance of up to Grade 12) can withstand wind and wave impacts; the deck floor adopts anti-slip composite steel grating, which can maintain a high anti-slip coefficient even if the surface is attached with seawater and oil stains, ensuring the walking safety of workers in a shaking environment; at the same time, its lightweight characteristic (40% lighter than traditional steel) can reduce the construction cost and operational energy consumption of the platform
In summary, composite steel grating, leveraging its core strengths of “customizable performance and wide scene adaptability”, has established mature application solutions across various fields. With advancements in material technology, such as the development of nano-anticorrosion coatings and carbon fiber composite substrates, its future applications in special scenarios like deep-sea exploration platforms and high-temperature industrial kilns are set to expand further, providing safe and efficient building material solutions for more industries
