This corner guard is constructed with modified PVC infused with V0-grade flame retardants, achieving UL94 V0 flame retardant rating, which means it self-extinguishes within 10 seconds after removing the ignition source, effectively preventing fire spread. Its smoke density rating is ≤50, producing far less toxic smoke than ordinary PVC materials, which is essential for maintaining clear evacuation routes in tunnels during fires. The luminescent reflective strips can glow continuously for over 12 hours after absorbing 30 minutes of ambient light, ensuring visibility during power failures or emergency situations. With a main body thickness of 18mm, it offers excellent impact resistance, protecting tunnel walls from vehicle collisions while absorbing impact energy. The special structural adhesive and expansion screw mounting system provide a secure fit to concrete tunnel walls, even in high-humidity environments. Compliant with GB8624-2012 fire safety standards, it meets the strict requirements of underground infrastructure safety.
The flame-retardant polymer tunnel corner guard has an overall height of 1000mm and a base width of 120mm, with an 18mm-thick main body that balances impact resistance and flame retardancy. The luminescent reflective strips are 60mm wide and located along the entire height of the guard, with a luminescence brightness of ≥10cd/m² after 12 hours. It operates effectively within a temperature range of -25℃ to 60℃ and a humidity range of 0% to 95%RH, making it suitable for humid underground environments. The special structural adhesive has a shear strength of ≥2.0MPa, ensuring initial fixation, while the 4 expansion screw holes (diameter 9mm) provide long-term stability. Each unit weighs 3.8kg, and cartons contain 8 units, measuring 1050mm×130mm×130mm and weighing 31kg per carton. It is certified by GB8624-2012 and CE, confirming its flame retardancy and safety performance.
This corner guard is exclusively designed for tunnel infrastructure, including highway tunnels, urban subway tunnels, railway tunnels, and underground passageways. It is also suitable for civil air defense projects, underground parking garages with fire safety requirements, and industrial underground workshops. In tunnel environments, it protects the walls from vehicle collisions, reduces fire spread risk, and provides emergency visibility during power outages. For tunnel construction and maintenance teams, it is a compliant safety solution that meets national fire and road safety standards. Its low-maintenance design ensures long-term performance without regular replacement, making it a cost-effective choice for underground infrastructure projects. Additionally, its smoke-suppressant properties make it a critical component for ensuring passenger safety in case of tunnel fires.
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