Features: 1, pressure, shock. Steel tube with enhanced internal ∧ greatly enhance the pipe ring stiffness. 2, a good economy. Large-diameter pipe the same size, light weight than other pipe materials, handling, transportation, installation and connection to facilitate fast, and lower total cost. 3, acid, anti-aging, not sewage, chemical corrosion, UV black pipe to extend the service life. 4, drainage, sewerage smooth wall pipe flow resistance is small, pass water and strong flows. 5, the connection secure, reliable, electricity can be hot-melt, heat shrinkable tape, used in combination with internal and external extrusion welding, reliable connection, no pipe leakage. 

Use: 1, municipal water and sewage works. 2, various industrial and agricultural water supply, irrigation works. 3, road public works, such as railway, highway, stadium, etc.