Engineered exclusively for municipal road infrastructure, our CO600mm D400 composite manhole cover – a high-performance Heavy duty SMC manhole cover – sets the industry benchmark for performance and usability. As a professional EN124 D400 composite manhole cover, it is crafted from premium Sheet Molding Compound (SMC/FRP), strictly adhering to the rigorous EN124-5:2015 standard (and EN 124-1:2015 for load-bearing) to ensure uncompromising safety for public use. Also known as the 60cm circular composite manhole cover (60cm equals 600mm, with a circular design for universal municipal matching), this Anti-noise fiberglass manhole cover truly stands out with its ultra-lightweight design—enabling single-person operation for effortless installation, daily inspections, and maintenance, a game-changer for municipal engineering teams worldwide. Our Heavy duty SMC manhole cover and EN124 D400 composite manhole cover series are specifically optimized to meet the high-demand scenarios of municipal roads, combining durability and practicality.

ROUND MANHOLE COVERHome SMC Manhole Cover Round Manhole Cover 720mm D400 Composite Manhole Cover
D400 Manhole Cover
720mm D400 Composite Manhole Cover

90cm watertight composite manhole cover, prevent water damage for fuel tanks in chamber. Strictly compliance to EN 124 standard of loading class D400 to withstand heavy duty vehicles on roads.

Diameter is 900 mm, loading class is EN124 D400, designed for petrol station with double sealing rings including a sealed central cover on the main cover.

Product Brief
600mm Hinged Round SMC Manhole Cover, also known as 60cm circular composite manhole cover, is a high-performance product complying with EN124 D400 heavy duty standard. Adopting SMC composite material and integrated hinged design, it features light weight, high strength, corrosion resistance and anti-theft. Capable of withstanding 40-ton static load, it’s suitable for urban arterial roads, highways and industrial parks. The hinged structure ensures easy maintenance without cover loss, while anti-skid surface enhances safety. It effectively solves defects of traditional manhole covers, serving as a reliable choice for municipal infrastructure protection.

Standard EN 124, load class A15, light duty, for pedestrians and bicycles. Open clearance is 660mm, cover diameter is 700mm.SMC manhole cover

Clear opening is 670mm, Loading class is D400.

1. High load capacity, compliant with EN124-5, D400 grade.
2. Lightweight design that overcomes technical challenges—only 66 kg can achieve D400 grade, making daily maintenance and worker installation easier.
3. Corrosion-resistant, not easily damaged, with a service life of over 25 years.

Clear opening is 50cm, load class EN124 B125. Anti-theft.