Manhole cover

The manhole cover is made of fiber-reinforced thermosetting composite material of unsaturated polyester resin, and is a new type of environmentally friendly cover plate. Due to the fact that the composite resin manhole cover is made of fiber-reinforced thermosetting composite material of unsaturated polyester resin, it is a new type of environmentally friendly cover plate. Due to the use of low-temperature and high-pressure one-time compression molding technology, it has the characteristics of high polymerization degree, high density, impact resistance, and tensile strength, as well as wear resistance and durability. Therefore, it has the characteristics of high polymerization degree, high density, impact resistance, and tensile strength, as well as advantages such as wear resistance, corrosion resistance, no rust, no purification, and no maintenance.
The metal used in the composite manhole cover does not exceed one tenth of its own weight, and its strength is high, so it does not have much theft value. With the continuous development of technology, composite manhole covers have lost their value as common materials for municipal and construction construction construction, and therefore do not have much value for theft. With the frequent development of technology, composite manhole covers have lost their rapid development as common materials for municipal and construction.
1、 Before installation, the foundation of the manhole cover should be uniformly consolidated, and the inner diameter, length, and width should be determined according to the size of the manhole cover.
2、 When installing manhole covers on cement pavement, it is important to ensure that the masonry at the wellhead is well poured with concrete, and to establish a concrete maintenance circle at the core, which should be left unused for about 10 days.
3、 When installing manhole covers on asphalt pavement, it is important to pay attention to preventing the machine used for installation from indirectly crushing the manhole covers and seats to prevent damage.
4、 In order to maintain the beauty of the manhole cover and the clarity of the handwriting and patterns, it is important to be careful not to dirty the manhole cover when pouring asphalt and cement on the road surface