Sewage drainage pipeline for municipal engineering

The sewage drainage pipeline for municipal engineering comprises an embedded pipe inner layer, an embedded pipe sleeve layer is fixedly installed in the embedded pipe inner layer in an embedded mode, a pressure-resistant folding pipe sleeve layer is fixedly installed on the outer side of the embedded pipe inner layer, a triangular sponge strip is fixedly installed on the outer side of the pressure-resistant folding pipe sleeve layer, and a water outlet pipe is fixedly installed on the outer side of the triangular sponge strip. An outer embedded pipe inner layer is fixedly installed on the outer side of the triangular sponge strip. According to the sewage drainage pipeline for municipal engineering, the inner layer and the outer layer of the sewage drainage pipeline can be replaced through the inner embedded pipe inner layer, the inner embedded pipe sleeve layer, the outer embedded pipe inner layer and the outer embedded pipe sleeve layer, the disassembly, assembly and replacement processes of the inner embedd