检查井是用在建筑小区(居住区、公共建筑区、厂区等)范围内埋地塑料排水管道外径不大于800mm、埋设深度不大于6m，一般设在排水管道交汇处、转弯处、管径或坡度改变处、跌水处等，为了便于定期检查、清洁和疏通或下井操作检查用的塑料一体注塑而成或者砖砌成的井状构筑物。
The inspection well is a plastic integrated injection molding or brick building used for regular inspection, cleaning and dredging or inspection of downhole operation. The external diameter of the buried plastic drainage pipe in the building area (residential area, public building area, plant area, etc.) is not more than 800mm, and the buried depth is not more than 6m. It is generally located at the intersection of the drainage pipe, the turning, the change of pipe diameter or slope, and the drop of water, etc A well shaped structure.
塑料一体注塑检查井是指构成检查井的主要井座部分采用一次性注塑成型，井筒插口采用360度环型承载平台，井身及井座底部采用网状加强筋，各承插口采用环型加强筋设计。根据接管数和角度不同有起始井座、直通井座、45度弯头井座、三通井座、四通井座等。为了适应各种排水状况，塑料检查井同时配套有变径接头、汇流接头、井筒多接头等与之配套的塑料一体注塑成型配件。以保障整个排水系统的流畅和密封性。
The plastic integrated injection inspection well refers to the one-time injection molding of the main well seats, the 360 degree ring bearing platform is used for the shaft spigot, the mesh reinforcement is used for the well body and the bottom of the well seat, and the ring reinforcement design is used for each spigot. According to the number and angle of connecting pipes, there are initial well seat, through well seat, 45 degree elbow well seat, three-way well seat, four-way well seat, etc. In order to adapt to various drainage conditions, the plastic inspection well is equipped with variable diameter joint, confluence joint, shaft multi joint and other plastic integrated injection molding accessories. To ensure the smoothness and tightness of the whole drainage system.