Galvanized Steel Drainpipe:

Vertical and horizontal drainage of different kinds of retaining wall

Drainage in roadbed and road shoulder of road and railway

Drainage in electric power ash dyke and irrigation works dyke

Drainage in highway isolated area, vegetation protection and outdoor grounds for sports  

Drainage of transversal horizontal drill, slope protection of easy landslip, water and soil conservation in shoulder, underground drainage in land treatment projects        

Drainage in swale and saline alkali land alteration system.