Although prefabricated buried pipes have many advantages, there are still some unavoidable construction problems in specific construction operations. For example, the starting speed of insulation pipe is too fast or too slow, or the strength of polyurethane insulation pipe foam is too large or too small. The methods we can adopt for this are as follows:

Generally, the rapid initiation of prefabricated buried pipes occurs at high temperatures, such as noon and hot summers. At this point, the black material needs to be cooled before production. It can be cooled by using cold water. If the starting speed of prefabricated buried pipes is slow, they are more likely to occur in cold seasons. This can be solved by increasing the ambient temperature or the temperature of the black material.

Generally, the low strength of foam in the prefabricated directly buried pipe is due to the low proportion of black material in the batching process, so it is OK to increase the proportion of black material, but be careful not to overcorrect. If the proportion of black material is too high, it is easy to make the foam brittle.

The above is the handling of problems in the construction of prefabricated buried pipes, hoping to help everyone.