The utility model has the advantages of reasonable structural design, and installation security, solving the effluent seepage problem of the joint for pipe fittings.
本实用新型结构设计合理，安装安全可靠，解决了管件接头的污水渗漏问题。
For residential districts are different from each other in built-up area and planning, the causal building of catch pits will cause effluent seepage and groundwater pollution.
因小区面积不等、户型多样、情况复杂，检查井砌筑不慎将导致污水渗漏，污染地下水。
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