600mm Hinged Round SMC Manhole Cover
In the construction of urban infrastructure, manhole covers serve as crucial safety barriers that guard the operation of underground pipelines and facilities while ensuring the smooth flow of traffic and the safety of pedestrians. Among the diverse range of manhole cover products, the 600mm Hinged Round SMC Manhole Cover stands out with its exceptional performance, compliance with international standards, and wide application scenarios. As a representative of high-quality composite manhole covers, it effectively addresses the pain points of traditional manhole covers such as heavy weight, easy theft, poor corrosion resistance, and short service life, becoming the preferred choice for modern municipal engineering, transportation hubs, and industrial parks.
The 600mm Hinged Round SMC Manhole Cover, also known as 60cm circular composite manhole cover, is a precision-engineered product that integrates advanced material technology and humanized structural design. Its core advantage lies in the adoption of SMC (Sheet Moulding Compound) composite material, which endows the product with superior comprehensive performance compared to traditional cast iron, cement, and other materials. SMC manhole cover is manufactured through high-temperature compression molding process with high-strength composite materials and reinforced steel skeleton inside, ensuring stable structural strength and excellent load-bearing capacity. The 600mm specification, which is the most widely used size in municipal engineering, perfectly matches the standard inspection well openings, making it highly versatile in practical applications.
The hinged structural design is another highlight of this product, which defines the unique value of the Hinged manhole cover. Unlike the traditional split-type manhole covers that are easy to lose or displace, the 600mm Hinged Round SMC Manhole Cover adopts an integrated hinge connection between the cover and the frame. This design ensures that the cover can be opened and closed smoothly without separation from the frame, effectively preventing the loss of the cover and avoiding the formation of "urban black holes" that threaten public safety. The hinge structure is made of high-strength corrosion-resistant hardware, which undergoes strict anti-rust treatment and can maintain flexible rotation even in harsh environments such as humidity, rain, and snow. During maintenance operations, workers only need to open the cover along the hinge, which greatly improves the efficiency of inspection and maintenance while reducing the labor intensity of carrying and moving the cover.
As a high-performance 600mm round manhole cover, this product has excellent load-bearing capacity, which has passed the strict testing of the EN124 D400 heavy duty manhole cover standard. The EN124 standard is an authoritative international standard for manhole covers and gully tops, which classifies products into six load grades according to their bearing capacity, among which the D400 grade is applicable to heavy-duty road sections such as urban arterial roads, highways, and parking lots that bear frequent passage of large vehicles. The 600mm Hinged Round SMC Manhole Cover can withstand a static load of 400kN (equivalent to 40 tons) for 3 minutes without breaking or excessive deformation (the maximum deformation is less than 5mm), and can also pass the dynamic impact test of 50kg heavy hammer falling freely from 1m height. This outstanding load-bearing performance ensures that the product can stably withstand the rolling of heavy vehicles such as buses, trucks, and engineering vehicles for a long time, maintaining structural integrity and safety.
In addition to the advantages of hinged structure and strong load-bearing capacity, the SMC material itself brings multiple performance dividends to the 600mm Hinged Round SMC Manhole Cover. Firstly, it has excellent corrosion resistance. Unlike cast iron manhole covers that are prone to rust and corrosion in humid environments or areas with chemical pollutants, SMC manhole cover can resist the erosion of acids, alkalis, salts, and other chemical substances. It has been tested by professional institutions to have obvious acid and alkali resistance, and its anti-aging index meets the level 3 or above standard, which can be used normally in harsh environments ranging from -40℃ to 90℃. This characteristic makes it particularly suitable for coastal areas with high salt spray, chemical industrial zones, and rainy and humid southern regions, greatly extending the service life of the product.
Secondly, the product has the advantage of light weight and convenient installation. The weight of the 600mm Hinged Round SMC Manhole Cover is only about one-third of that of cast iron manhole covers of the same specification, usually around 25kg. This light weight design greatly reduces the difficulty of transportation and installation. During the construction process, workers can carry and install it without large-scale hoisting equipment, which not only improves the construction efficiency but also reduces the construction cost. At the same time, the light weight does not affect its load-bearing capacity. The scientific matching of SMC material and reinforced skeleton realizes the perfect balance between light weight and high strength, which is a major breakthrough in the field of manhole cover manufacturing.
Anti-theft and safety performance are also important indicators that highlight the superiority of the 600mm Hinged Round SMC Manhole Cover. Traditional cast iron manhole covers are often stolen due to their high recycling value, which leads to serious safety hazards. However, the SMC material used in this product has no recycling value, fundamentally eliminating the motivation for theft. In addition, the product is equipped with a special locking device (such as T-lock), which makes it difficult for non-professionals to open, further ensuring the safety of underground facilities. The surface of the cover is designed with anti-skid patterns, which increases the friction between the cover and the tires of vehicles or the soles of pedestrians, effectively preventing slipping accidents in rainy and snowy weather. The tight fit between the cover and the frame also solves the problem of "running, jumping, and making noise" of traditional manhole covers when vehicles pass by, improving the comfort of road traffic.
The 600mm Hinged Round SMC Manhole Cover, as a high-quality 60cm circular composite manhole cover, has been widely used in various fields relying on its excellent performance. In municipal engineering, it is widely used in the covering of underground pipelines such as water supply, drainage, gas, communication, and electric power in urban arterial roads, secondary trunk roads, and residential areas. Its compliance with the EN124 D400 heavy duty manhole cover standard ensures that it can withstand the test of heavy traffic flow in urban main roads. In transportation hubs such as highways, airports, and railway stations, this manhole cover is favored for its light weight, easy maintenance, and high safety performance, which can adapt to the high-frequency and heavy-load use environment of transportation hubs. In industrial parks, especially chemical industrial zones and coastal industrial areas, its strong corrosion resistance makes it an ideal choice for protecting underground facilities from chemical corrosion and marine climate erosion.
The installation and maintenance of the 600mm Hinged Round SMC Manhole Cover are also extremely convenient, which further enhances its practical value. During installation, the cover and the frame can be lifted as a whole and placed centrally above the inspection well opening. Spacers can be used under the frame to adjust the height to be consistent with the finished road surface, ensuring the flatness of the road. After positioning, the frame can be fixed with anchors to avoid displacement. When opening, you only need to unlock the locking device and open the cover along the hinge, and the safety stay bar will automatically lock the open position to prevent the cover from falling and hurting people. During daily maintenance, only regular inspection of the hinge and locking device is required to ensure their flexibility and reliability. The SMC material has good weather resistance and durability, and the product has a service life of 5-10 years longer than that of cast iron manhole covers, which greatly reduces the frequency of replacement and maintenance and saves long-term operation costs for users.
With the continuous advancement of urbanization and the increasing requirements for infrastructure quality, the demand for high-performance, environmentally friendly, and safe manhole covers is growing. The 600mm Hinged Round SMC Manhole Cover, with its excellent performance indicators, compliance with international standards, and humanized design, has become an important part of modern urban infrastructure construction. Compared with traditional manhole covers, it not only solves the problems of theft, corrosion, and heavy weight but also improves the safety, reliability, and aesthetics of the city. As a professional SMC manhole cover product, it has been widely recognized by municipal construction departments, transportation enterprises, and industrial users.
In terms of product customization, the 600mm Hinged Round SMC Manhole Cover can also meet the personalized needs of different projects. According to the requirements of the use environment and design style, the surface pattern, color, and logo can be customized, making the product integrate with the surrounding environment and enhance the overall beauty of the city. At the same time, manufacturers can also adjust the product parameters according to special load requirements and environmental conditions to ensure that the product can adapt to various complex use scenarios.
In conclusion, the 600mm Hinged Round SMC Manhole Cover is a high-quality, high-performance product that combines advanced material technology and scientific structural design. As a 60cm circular composite manhole cover that meets the EN124 D400 heavy duty manhole cover standard, it has the advantages of light weight, high strength, corrosion resistance, anti-theft, and convenient maintenance. It effectively makes up for the defects of traditional manhole covers and provides a reliable guarantee for the safe operation of urban infrastructure. With the continuous development of composite material technology and the continuous improvement of infrastructure construction standards, the 600mm Hinged Round SMC Manhole Cover will surely be more widely used in more fields, contributing more to the construction of safe, efficient, and beautiful cities.