RF450-60 Series Heavy-Duty Round SMC Manhole Covers

RF450-60 Series Heavy-Duty Round SMC Manhole Covers

The RF450-60 series round manhole covers are a compact, heavy-duty solution designed for fuel stations, municipal roads, sidewalks, industrial areas, and other applications where space is limited but safety and durability cannot be compromised. With a cover diameter of 450 mm, this smaller model is ideal for medium-traffic areas, tight underground access points, and installations requiring a lighter, easier-to-handle cover without sacrificing load-bearing capacity.

Manufactured from high-performance SMC (Sheet Moulding Compound) composite, both the cover and frame are resistant to chemical corrosion, moisture ingress, and UV exposure. This makes the RF450-60 series suitable for harsh environments, including fuel station driveways and industrial settings where exposure to chemicals or oils is common. The material is also inherently anti-static, reducing the risk of sparks or ignition in sensitive locations.

The RF450-60 series meets EN 124:1994 standards and is available in C250 (25-ton) and D400 (40-ton) load classes, ensuring compatibility with light to heavy vehicle traffic. The frame design, with an inner diameter of 400 mm and outer diameter of 530 mm, provides a secure and stable fit for the cover, while the total height of 60 mm maintains a low-profile appearance without compromising strength.

A NBR (Nitrile Butadiene Rubber) sealing ring ensures watertight performance, preventing rainwater, groundwater, and debris from entering the underground chamber. The lightweight SMC construction—approximately 10 kg for C250 and 13 kg for D400 covers—makes handling, installation, and maintenance much easier than traditional cast iron alternatives, especially in smaller or confined spaces.

The exterior surface features a raised anti-slip pattern for reliable traction, even under wet or oily conditions. Customers can also request custom colors or logo engravings to match site branding or urban design requirements. The covers can withstand operating temperatures from -40℃ to +100℃, ensuring reliable performance in a wide range of climates.

This series is known internationally by various terms, including SMC composite round manhole cover, GRP access cover, composite inspection hatch, or fuel station round cover, depending on regional terminology and industry usage. Despite the different naming conventions, the RF450-60 series delivers the same core benefits: lightweight handling, high load capacity, corrosion resistance, and anti-static safety.

In summary, the RF450-60 small-size heavy-duty round SMC manhole covers provide a practical solution where compact dimensions, easy installation, and robust load performance are required. They are an ideal choice for modern fuel stations, municipal roads, and industrial facilities looking to replace traditional cast iron covers with a lighter, safer, and maintenance-friendly alternative.