GRP manhole covers are manufactured from high-strength SMC/BMC composite materials through high-temperature compression molding technology. Compared with traditional cast iron covers, they are lightweight, corrosion-resistant, anti-theft, non-conductive, and easy to install. Designed according to EN124 standards, GRP manhole covers provide excellent load-bearing performance and long service life, making them widely used in municipal roads, water treatment systems, telecommunications, power utilities, industrial plants, ports, and other infrastructure projects.
