The hardness of the resin well cover refers to the ability of the surface volume of the raw material of the product to resist deformation or cracking. According to different test methods, the physical meaning of the hardness value of the raw material of the product is also different, and its hardness will also affect the service performance and quality of the product.

1. The manhole cover is made of polymer composite materials and glass fiber, which has no recycling value. After the well cover is popularized and used, the problem of urban black hole caused by stealing the well cover will be solved. Different from the well cover on the market, it is made by hydraulic press at high temperature and high pressure, with high impact strength.

2. The ability to resist deformation or cracking within a small volume on the surface of the raw material of the manhole cover. According to different test methods, the physical meaning of the hardness value of well cover raw materials is also different.

3. It is proved by practice that the higher the strength of the raw material of the manhole cover, the higher the corresponding hardness value. There is a similar correlation between the hardness values, hardness and strength of the raw materials of well covers.

4. This resin composite manhole cover is made of glass fiber and resin as basic materials and mold release agent as auxiliary materials. Its weight is two-thirds lighter than that of cast iron manhole cover, and its service life is more than 20 years, twice that of cast iron manhole cover, while its price is only 80% of that of cast iron manhole cover. At the same time, this manhole cover also has the characteristics of insulation and no noise. Chifeng product quality supervision and Inspection Institute conducted load and impact strength tests on this kind of well cover, and found that the load capacity of this kind of well cover is 24 tons, and the impact strength is also higher than that of ordinary well cover.

The higher the strength of the raw material of the resin well cover, the higher the corresponding hardness value. There is a similar correlation between the hardness values, hardness and strength of the raw materials of well covers. It is a new type of well cover made of renewable resin as the main raw material. This type of manhole cover has stronger corrosion resistance, better anti-theft ability and more stable use, so it also occupies a certain position in the market at present.