The pipe diameter is dn200-dn600, the main pipe material is FRPE double plastic composite structure wall pipe, the traction jacking pipe adopts the trenchless laying high-density polyethylene drainage pipe; the rainwater pipe is 0.138km, the pipe diameter is D600, and the pipe material is reinforced concrete pipe; the existing old pipe network is dredged and repaired for 24.160km, with the pipe diameter of dn300-dn800.
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