... under stress 3.110~1200mm 4.uses asburied drainage, sewage pipe Specification: 110mm~1200mmColor: white & blackLength: 6mplastic corrugated ... pipe1.Material:PVC-U;2.Use: Municipal engineering and construction of buried drainage, sewage pipe.3.Superiority:Reasonable hollow ... the traditional cement and steelpipes, is engineering pipe the update products, is widely used in the ...