The SMC composite manhole cover is manufactured through
high-temperature compression molding of sheet molding compound. It
features lightweight strength, corrosion resistance, insulation,
and anti-theft properties. Compared with traditional cast iron
covers, it weighs only one-third as much, significantly reducing
transportation and installation costs while eliminating theft risks
caused by scrap recycling. Designed in accordance with EN124
standards, the product provides reliable load-bearing capacity and
is widely used in municipal roads, residential areas,
telecommunications, power, and water supply networks. The surface
can be customized with patterns and logos according to customer
requirements, offering both anti-slip performance and aesthetics.
With a service life of over 20 years and minimal maintenance costs,
it is regarded as the new generation of eco-friendly municipal
drainage products.
SMC (Sheet Molding Compound) manhole covers represent a
breakthrough in the field of modern urban infrastructure. Unlike
conventional cast iron covers, which are heavy, susceptible to
rust, and often stolen for scrap value, SMC covers are made of a
composite material composed of fiberglass reinforcement, resin, and
mineral fillers. Through high-temperature compression molding, the
product gains both superior strength and a lighter structure,
making it easier to handle during transportation and installation.
One of the major advantages is its weight reduction—typically
one-third of cast iron. This directly reduces labor requirements
on-site and increases overall efficiency for contractors. In
addition, SMC covers meet strict international standards such as
EN124, ensuring load-bearing reliability in different environments.
They are available in multiple classes, from A15 suitable for
pedestrian zones to F900 for airport runways and industrial
facilities.
Another critical advantage lies in safety. Because the product
contains no recyclable metal, it completely eliminates theft issues
that plague cast iron covers. The material also provides electrical
insulation, making it ideal for installation in power distribution
areas and communication facilities. Moreover, its slip-resistant
surface ensures pedestrian safety, even in rainy or icy conditions.
Customization is another strong point. Logos, city names, or
patterns can be molded directly onto the surface, creating a
professional appearance while also serving branding or functional
identification purposes. The product is resistant to ultraviolet
radiation, water, and chemicals, which means it can withstand
long-term exposure to harsh outdoor environments without losing
performance.
With a life span exceeding 20 years and little maintenance
required, SMC manhole covers not only reduce total cost of
ownership but also contribute to sustainability. They are
environmentally friendly, corrosion-free, and compliant with green
urban development goals. For municipalities, contractors, and
utility companies looking for efficiency, durability, and safety,
SMC covers are an increasingly popular choice around the world.
