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• Time of issue:2020-12-29
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(Summary description)Nowadays, the demand for spheroidal ink manhole covers is very large. There is a need for manhole covers in municipal administration, real estate, and villas. Therefore, the number of people purchasing manhole covers is increasing. Many purchases are not necessarily good for manhole covers because they usually need to purchase a lot of things. How can ordinary purchasers purchase good ductile manhole covers?

　　 Here is a detailed analysis for you

When purchasing a ductile manhole cover, you must first determine the load. If you are not sure about the calculation, you can put forward the use occasions and requirements. The manufacturer will report the specific plan. The most important point is to select the bearing capacity of the manhole cover, whether it is cast iron manhole cover, cement manhole cover or composite. The manhole cover, if the actual carrying capacity of the manhole cover does not meet the requirements of road use, it is unsafe to use on the road. How high should the carrying capacity be? At least 60KN (that is, 36 tons) specified in the "Cast Iron Manhole Cover Standard", and It is not 240KN specified in the Standard for Recycled Resin Manhole Covers and 270KN specified in the Standard for Polymer Matrix Composite Manhole Covers.

　　Secondly, we can’t just look at the size of a supplier’s office. We need to go to the supplier’s factory to make an on-site inspection to determine the manufacturer’s production capacity, operating life, and see if there is a promised after-sales capacity.

　　Three is more than price. Note that on the basis of the price ratio, the weight of the ductile manhole cover must be fully reached, and the price cannot be reduced while the quality is also reduced. This is risky.