Unlike traditional cast iron or steel manhole covers, SMC road manhole covers are highly resistant to corrosion. SMC material is not susceptible to rust or deterioration due to exposure to moisture, chemicals, or environmental factors such as salt from road treatments during winter. This corrosion resistance greatly extends the lifespan of the manhole cover and reduces maintenance costs over time.

SMC road manhole covers are significantly lighter than traditional cast iron or steel covers, which makes them easier to handle during installation and maintenance. The lightweight nature of SMC covers does not compromise their strength or durability. The reduced weight makes handling safer for workers and reduces transportation costs.

The design flexibility of SMC road manhole cover molds allows manufacturers to create covers in various sizes, shapes, and designs to meet the specific needs of different locations. The mold can be customized to create unique features such as locking mechanisms, anti-theft designs, or specific surface textures for added safety and grip. Additionally, SMC allows for intricate detailing, making it possible to integrate logos or brand markings into the cover during the molding process.

SMC material has excellent thermal and electrical insulating properties, which makes it suitable for manhole covers in areas with electrical or temperature-sensitive infrastructure. Unlike metal manhole covers, which can conduct heat or electricity, SMC covers reduce the risk of electrical shocks and help maintain the integrity of sensitive underground equipment.

SMC manhole covers are engineered to be impact-resistant, meaning they can endure accidental impacts from vehicles or machinery without cracking or breaking. The combination of fiberglass reinforcement and polymer resins allows the covers to flex under pressure, absorbing the impact and returning to their original shape without permanent damage.

Cover Shape  
Round / Rectangle / Square
Cover Load  
A15, B125, C250, D400; according to customer standards requirement
Mould Type  
Compression mould
Mould Steel  
P20 / S50C / S45
Mould Cavity  
Single cavity / Multiple cavities / Multiple cavities with interchangeable inserts
Heating System  
Oil heating / Electrical rods heating
Ejection System
Hydraulic eject with air assist / hydraulic pins