碧昂 plastic Manhole suitable for rain sewage pipes and for maintenance workers check, remove foreign subsidiary structures, is easy to regularly check and clear the pipeline, the pipeline facilities necessary to prevent clogging. Plastic inspection wells to polymer resin as raw material, the use of composite structure, usually made well seat, wellbore, covers, seat covers and concrete support plates and other components. The key part is the well base HDPE material one-time injection molding, with adjustable joints, variable angle joints and seals and other accessories to achieve the change in diameter and angle connections. Manhole supporting the development of injection molding wells, bore wells seat, road load through wells, wells seat role in checking the surrounding wells, avoiding the road load for damage inspection wells, cover the seat with a fluctuating function, can take the initiative to adapt to the road The level of change, while the wellbore using a single (double) wall corrugated pipe and adjust the wellbore, can intercept the appropriate length according to site burial depth, with great flexibility. Wellbore, into (out of) the water pipes and wells connected by a rubber seal seat flexible connection, can adapt to changes within a small range of angles, convenient construction, good sealing performance, prevent leakage, environmental protection and energy saving. Manhole generally high in the pipeline interchange, corner, size or slope change at some distance on every drop of water and straight pipe sections at a maximum spacing depending on the connection according to the diameter size from 30 meters to 100 meters range, connection Manhole same sewage pipe spacing smaller than 10 meters of rain inspection wells, as determined in accordance with outdoor drainage design specifications. The Manhole municipal road construction, building residential emissions, urban greening, REDD, rain sewage discharge pipe ancillary structures, the product is easy to sewerage, drainage network regularly check maintenance dredge pipe to prevent clogging pipes, pipelines and wells to improve Well joints and the body's own anti-leakage, ensure that the new facilities member of shallow groundwater from pollution.