The models of Yayuan integrated manhole covers are 200mm, 315mm, 450mm or customized
1. Acid and alkali resistance, aging resistance, and long service life. The components are made of thermoplastic composite materials by one-time injection molding and have been tested by the National Chemical Building Materials Testing Center. 2. Safe and environmentally friendly, well sealed to prevent leakage. The material of the integrated manhole cover is high-density polyethylene, which is non-toxic and odorless, and can be recycled after use; Good sealing can prevent rainwater and sewage leakage and prevent groundwater pollution. Belonging to environmentally friendly chemical building materials, it complies with the national environmental protection policy. 3. Uniform settlement and compressive strength. The manhole cover is flexibly connected to the pipeline, with reinforced ribs inside. The clay of the pipeline and the well seat move together, effectively solving the problem of uneven settlement caused by traditional manhole cover and pipeline connections and preventing ground collapse.