RF977-100 Series High-Performance SMC Round Manhole Covers for Fuel Stations and Industrial Sites
The RF977-100 series heavy-duty round manhole covers are engineered to meet the rigorous demands of environments requiring high load capacity, durability, and long-term environmental resistance. With a cover diameter of 977 mm and robust frame dimensions, these manhole covers are particularly suitable for fuel stations, urban infrastructure, and industrial facilities where safety, reliability, and ease of maintenance are paramount.
Crafted entirely from SMC (Sheet Moulding Compound) composite material, both the cover and frame offer excellent resistance to chemical corrosion, moisture, and ultraviolet radiation, ensuring long-term performance even under harsh environmental conditions. Integrated NBR (Nitrile Butadiene Rubber) sealing rings provide a tight, waterproof, and chemical-resistant barrier, protecting the underground chamber from water ingress, fuel spills, or chemical contamination.
This series is compliant with EN124:1994 standards and available in C250 (25-ton) and D400 (40-ton) load classes, allowing safe access for light to heavy vehicle traffic. The frame has an inner diameter of 900 mm and outer diameter of 1070 mm, while the total height is 100 mm. An innovative locking mechanism with removable seal facilitates inspection, maintenance, and access without compromising security or sealing performance.
The surface of the RF977-100 cover features raised anti-slip patterns, ensuring traction for vehicles and pedestrians under wet or oily conditions. Compared to traditional cast iron covers, this series is lightweight yet extremely strong, with cover weights ranging from 55 kg (C250) to 59 kg (D400), and frame weight of 16 kg, making installation, handling, and routine maintenance safer and more convenient. Customers can also request custom colors or engraved logos for branding or aesthetic integration.
Internationally, the RF977-100 series is also referred to as SMC composite round access covers, GRP inspection manhole covers, composite hatch covers with monitoring hole, or heavy-duty fuel station manhole covers, reflecting regional or industry-specific naming conventions. Despite different names, the core advantages remain unchanged: high durability, chemical resistance, anti-static properties, load-bearing strength, and inspection-friendly design.
In conclusion, the RF977-100 series heavy-duty round SMC manhole covers provide a robust, reliable, and maintenance-friendly solution for fuel stations, municipal roads, and industrial sites. They are an ideal alternative to traditional metal covers, offering enhanced safety, long service life, and environmental resilience.
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