This speed bump is crafted from ductile iron QT500-7, a material known for its high strength, wear resistance, and impact toughness, which can withstand 150-ton heavy loads without cracking or breaking—solving the pain point of frequent replacement of ordinary speed bumps in mining areas. The hot-dip galvanizing surface treatment forms a dense protective layer, passing a 2000-hour salt spray test, effectively resisting corrosion from rain, dust, and mineral residues, extending its service life to over 15 years. The reflective spraying uses high-quality reflective coating, which remains bright even after years of exposure to the elements, ensuring clear visibility day and night. The embedded bolt installation design increases the contact area with the ground, making it more stable than ordinary expansion bolt fixation and preventing displacement caused by heavy vehicle碾压. It also supports customized height and length to adapt to different mining road widths and speed control requirements.
With a length of 1000mm (39.37 inches), width of 400mm (15.75 inches), and height of 60mm (2.36 inches), this speed bump is made of ductile iron QT500-7 with a tensile strength of ≥500 MPa and elongation of ≥7%. It can bear a maximum load of 150 tons (330693 pounds) and is suitable for areas with a speed limit of ≤10 km/h (6.21 mph). The surface is treated with hot-dip galvanizing, with a zinc layer thickness of ≥85μm, followed by black-yellow reflective spraying with a retro-reflective coefficient of ≥250 cd·lx-1·m-2. It has 5 installation holes with a diameter of 16mm, compatible with M12 embedded bolts. The temperature resistance range is -40℃ to 90℃ (-40℉ to 194℉), and it has a Brinell hardness of 170-230 HBW. It complies with national mining equipment safety standards, ensuring safe use in harsh mining environments.
This speed bump is specifically designed for mining areas, quarries, large-scale construction sites, and heavy-duty industrial parks where overloaded mining trucks and construction machinery are frequently used. It is suitable for mining main transport roads, quarry downhill sections, construction site material transport corridors, and heavy equipment maintenance area entrances, effectively controlling vehicle speeds to prevent rollover, collision, and equipment damage accidents. It can also be used in port bulk cargo terminals and steel mill internal roads to withstand the impact of heavy cargo vehicles. Due to its excellent corrosion resistance, it is also applicable to coastal mining areas and salt lake mining sites, where ordinary speed bumps are prone to corrosion failure. Additionally, it can be used as a permanent traffic safety facility in open-pit mining areas, providing long-term protection for personnel and equipment.
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