Inspection well mold belongs to large heavy industry mold, so inspection well mold at present also have plastic material, FRP material relative cost is much higher. So up to now, the material of inspection well mould is generally high-quality iron plate, which is formed by welding. The iron mould has strong bearing capacity, is not easy to leak, is acid and alkali resistant, and can be recycled. The inspection well mould is divided into three parts: reserved hole, adjusting ring and necking.
The bottom of the well body is the reserved hole, which is used to connect the places that need to be repaired and maintained in the future, and it is also the place prone to failure. The middle part is the adjusting ring, which is used to adjust the underground high speed of the whole well body to adapt to various installation environments, which can effectively reduce the cost and improve the efficiency. The top part is the closing part, which is the place connected with the ground. The top part is installed with a well cover with the same diameter as the closing part, so that a complete set of inspection wells are installed.