As below, the round 650mm D400 Composite sewage manhole cover

Usage: composite long fiberglass materials With Perfect Performance:
Noise reduce: sewage manhole cover and the frame install well, it solve the problem of the vehicle by the noise.
Prevent slippery: covering non-slip texture clear, increase the friction, prevent because of the rain, snow, ice covered pedestrian slip.
Well sealed: it can be used hermetically, and effectively prevent those poisonous gases leaking out from cesspool.
No any jangle: There is neither jangle nor rebound when cars pass through.
Environmental protection - compared to the production of cast iron cover, when producing composite caps the CO2 emission is considerably reduced. Due to the low weight, the transport of composite caps is much easier (a larger quantity can be transported in a transport).
Sewage manhole covers have smooth and beautiful appearance, with many optional colors (black, gray, green, yellow, other color). The cover surface is designed to be anti-skid and with delicate patterns and lines, and the surface can be customized in design.
Manufacture and export manhole cover, trench cover, water grate, telecom inspection cover and grating. Till now, our competitive products not only have good market in domestic, but also owned a large overseas market with a high reputation. Through long-term marketing promotion and widely use of our products, sell domestic and also exported to different countries. Focus on road safety!