根据接管数和角度不同有起始井座、直通井座、三通井座、四通井座、90度弯头井座等。为了适应各种排水状况，塑料检查井同时配套有内外径转换接头、马鞍接头、变径接头、汇合接头、变角接头等与之配套的塑料检查井零配件。这些零配件和井座共同用来保障整个排水系统的流通性和密封性。
According to the number and angle of nozzles, there are starting wellbore, through wellbore, three-way wellbore, four-way wellbore, 90 degree elbow wellbore and so on. In order to adapt to various drainage conditions, plastic inspection wells are equipped with internal and external diameter transfer joints, saddle joints, variable diameter joints, convergence joints, variable angle joints and other matching plastic inspection wells spare parts. These spare parts and wellbore are used together to ensure the circulation and sealing of the whole drainage system.