Function:

Safety protection function

Prevent people from falling: In urban roads, communities, factories and other areas, there are many underground pipes and facilities, such as drainage pipes, cable trenches, septic tanks, etc. If these wells are not covered by manhole covers, pedestrians or vehicles will accidentally fall in, which will cause serious personal injuries. The manhole cover can completely cover the wellhead, forming a safe barrier to effectively prevent people from falling accidentally.

Avoid vehicle damage: When a vehicle is driving on the road, if it presses on a wellhead without a manhole cover, it may cause the wheels to sink, the vehicle chassis to be damaged, and even cause a traffic accident. The manhole cover can bear the weight of the vehicle, keep the road surface flat, and ensure the safety of vehicle driving.

Block foreign objects from entering: The manhole cover can prevent debris, garbage, leaves, etc. from entering underground pipes or facilities, avoid pipe blockage, and ensure the normal operation of drainage, sewage and other systems. At the same time, it can also prevent small animals from entering the pipes, reducing damage and interference to the internal facilities of the pipes.

Easy to inspect and maintain the function

Provide inspection channels: Underground pipes and facilities need to be inspected, repaired and maintained regularly. As the openable part of the wellhead, the manhole cover is convenient for the staff to open the manhole cover, enter the underground space for work, and inspect, repair, and replace pipes and cables.

Identification function: Different types of manhole covers usually have corresponding identification, such as "sewage", "rainwater", "electricity", "gas", etc., which clearly indicate the type of underground facilities, so that maintenance personnel can quickly and accurately find the pipes or facilities that need to be repaired, and improve the efficiency of maintenance.

Environmental protection function

Prevent sewage overflow: In the drainage system, the manhole cover can ensure that sewage flows in the pipe, prevent sewage from overflowing from the wellhead to the ground, avoid pollution to the surrounding environment, and keep the urban environment clean and hygienic.

Reduce odor emission: For manhole covers such as sewage wells and septic tanks, they can effectively prevent the odor generated by underground sewage and waste from emitting into the air, improve urban air quality, and reduce the impact on residents' lives.

Load-bearing and traffic function

Load-bearing: The manhole cover needs to have sufficient strength and load-bearing capacity to withstand the weight of different types of vehicles. Depending on the place of use, the bearing capacity of manhole covers has different standards. For example, light manhole covers are suitable for areas such as sidewalks and green belts, while heavy manhole covers are used in places with large vehicle traffic and heavy loads such as urban main roads and highways to ensure that the manhole covers will not deform or crack during long-term use.

Ensure smooth passage: The manhole cover is closely integrated with the road surface to maintain the continuity and flatness of the road surface, so that pedestrians and vehicles can pass smoothly. After installation, high-quality manhole covers will not shake or make abnormal noises, and will not cause bumps or interference to pedestrians and vehicles, which improves the quality of road traffic.

Other functions

Ventilation function: Some manhole covers have ventilation holes or special structural designs, which can provide certain ventilation conditions for the underground space, ensure underground air circulation, prevent the accumulation of harmful gases, and ensure the safety of maintenance personnel.

Emergency function: In some special circumstances, such as urban waterlogging, fire, etc., the manhole cover can be used as an emergency passage or drain. By opening the manhole cover, the drainage capacity can be increased or a channel for rescue personnel to enter the underground space can be provided.

Specifications:

Round manhole covers: diameters are usually 600mm, 750mm, 900mm, 1200mm, 1500mm, 1800mm, 2000mm, etc.

Square manhole covers: common ones are 300×400mm, 400×600mm, 500×1000mm, 600×800mm, 800×1000mm, 1000×1200mm, 1000×1500mm, etc.

Thickness specifications: Taking cement manhole covers as an example, the thickness is generally 6mm, 7mm, 8mm, etc.