What is a plastic manhole?

Inspection wells, commonly known as "inspection wells", are generally located at intersections and bends of drainage pipelines, where the diameter or slope changes and falls into the water, and at regular intervals on straight pipe sections. They are auxiliary drainage structures, which are convenient for regular inspection, cleaning and dredging of pipelines. The plastic manhole is made of polymer resin and has a combined structure. Generally, it consists of inspection wells such as Jing Zuo, shaft and manhole cover, which are divided into sewage (waste) water inspection wells and rainwater inspection wells. Sewage wells are generally equipped with launders to facilitate the smooth discharge of pollutants, and rainwater wells (generally equipped with mud settling chambers for settling mud and sand) are convenient for later cleaning and maintenance.

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