There are many kinds of composite manhole covers, iron, cement, resin, composite, so which kind of composite manhole cover is of good quality? Cement composite manhole cover -- cement composite manhole cover is used more than before, and it is mostly used in residential areas and some less obvious occasions. The cost of cement composite manhole cover is low, and it has active anti-theft property. Moreover, the cement composite manhole cover is generally thicker and has low recovery value, so it is not easy to lose. However, the bearing capacity of cement composite manhole cover is generally poor, so the safety factor is low.
Composite composite manhole cover -- composite composite manhole cover is a kind of composite manhole cover, which is made of non-metallic material and reinforced bar in the middle. Generally, there are polymer materials, glass fiber materials, resin materials, etc.
Cast iron compound manhole cover nodular graphite composite manhole cover has the best rigidity, and its cost is slightly higher than the other two kinds of composite manhole covers. However, in some important high load occasions, such as high-speed companies and urban trunk roads, ductile iron composite manhole covers are basically used. Because it bears the best load, it has the highest safety factor.
1 cast iron composite manhole cover, now cast iron composite manhole cover is accurate, because of good material (metal material), good pressure resistance, high load, widely used in municipal roads, highways, communications, power, tap water, residential areas, schools and other parks. Especially in the Second Ring Road, high speed, airport, these heavy load occasions, we must use cast iron composite manhole cover of metal material. Graphite cast iron compound manhole cover: suitable for setting in municipal roads, expressways, communications, power, tap water, residential areas, schools and other parks. FRP composite manhole cover: mainly used in municipal road, water supply, power supply, post and telecommunication, street lamp, residential quarter, landscape planning, oil and gas exploitation, chemical production, sewer cover, environmental sanitation and other engineering projects. Steel fiber reinforced concrete composite manhole cover: it is widely used in municipal engineering, construction engineering, public engineering, garden and other places and areas that need ground and pavement drainage and drainage.
2 composite manhole cover, mainly used in municipal road, water supply, power supply, post and telecommunication, street lamp, residential quarter, landscape planning, oil and gas exploitation, chemical production, sewer cover, environmental sanitation and other engineering projects. Its characteristics, bright colors, customizable patterns, especially in high-end residential areas and villas and other occasions, is the mainstream application.
3 composite manhole cover is widely used in municipal engineering, construction engineering, public engineering, garden and other places and areas that need ground and pavement drainage and drainage. It is usually used in small areas with low load capacity and can not be under heavy pressure. For communication such as China Unicom, telecom and mobile, this kind of composite manhole cover is more used.