Introduction of plastic inspection chamber 
 Long Kang inspection well for rain water discharge pipe and checking for maintenance workers to clear foreign subsidiary structures, is to facilitate regular inspections and clear the pipeline, the necessary facilities to prevent pipe blockage. Plastic inspection chamber to polymer resins, the use of composite structure, usually by well base, shaft, covers, seat covers and concrete bearing plates and other components. The key part of the well using a one-time injection molding seat to adjustable joints, variable angle joints and seals and other accessories to achieve the change in diameter and the angle of the connection. Supporting the development of inspection chamber covers injection molding, shaft, well base, road load through the covers, seat role in the inspection wells wells around the load on the road to avoid the destruction of inspection wells, cover with a fluctuating function blocks can be active adapt to changes in the level of the road, while the wellbore single (double) wall corrugated pipe and adjust the shaft, according to the corresponding length of the interception of the burying depth of field, with great flexibility. Shaft, into (a) water pipes and wells connected by rubber seals seat flexible connection, can be adapted within a small range of angle, easy to use, good sealing performance, prevent leakage, environmental protection and energy saving. 

 Long Kang check the height of the pipe junction well, bend, or slope changes in diameter at, or water, and line pipe at a certain distance on the intervals, the maximum distance according to connections based on the caliber of 30 meters to 100 meters from the range , connecting the same sewage pipe inspection wells smaller than the water check 10 meters distance between wells, the specific design of the outdoor drainage OK.