铸铁检查井盖不耐冲击，易破裂。
Cast iron manhole cover anti impact resistance, easy rupture.
现场各类检查井盖板及暗沟盖板在预制场内预制，载重汽车运输、吊车装卸，人工辅助。
The scene each kind of inspection well lap and the blind ditch lap in prefabricate in the field to prefabricate, truck transportation, crane loading and unloading, artificial auxiliary.
有两种解决办法，一种是安装固定在建筑物上高度超过屋檐的通气管，另一个使用通风检查井盖。
Two alternative methods can be adopted, one being to provide a ventilation pipe fixed to a building and carded above the eaves level, and the other to have ventilated manhole covers.
产品采用不饱和树脂为主要化工原料，辅以钢筋加强筋增强，经高温高压制成，是一种新型的环保型检查井盖，获得国家专利。
The products are made from unsaturated resin and strengthened by reinforcing steel bar under high temperature. They are new types of environment-friendly well covers with state patents.
检查井是城市道路基础设施，检查井井盖的质量通病也是城市建设中难以解决的难题。
The inspection well is the urban road infrastructure, inspection of the common quality failing of well covers is also the difficult problem in the urban construction.
检查井是城市道路基础设施，检查井井盖的质量通病也是城市建设中难以解决的难题。
The inspection well is the urban road infrastructure, inspection of the common quality failing of well covers is also the difficult problem in the urban construction.
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