Product introductions: The main raw material of HDPE double wall corrugated pipe is high density polyethylene, the pipe is extruded by the co-extrusion extruder from the inside and outside respectively, inner wall is smooth and outer wall is trapezoidal. There is a hollow layer between the inner and outer wall. Product has variety of advantages like high ring stiffness, strength, light weight, noise damping, high UV stability, long life and good bending, anti-pressure, high impact strength and so on. It can be used in the poor geological sections, it is the ideal replacement for traditional sewage drainage pipes. It is widely used in low-voltage cable and communication cable sheathing, municipal water, sewage, industrial waste water discharge, drainage area, salt brine, fishing water, well drilling project, irrigation for forestry and agriculture, mine ventilation and drainage works.
Standard: GB/T19472.1—2004
Specifications（Outside Diameter）：
200mm 225mm 300mm 400mm 500mm 600mm 700mm 800mm 1000mm 1200mm

Characteristics:
Low cost
High compressive strength
High density, light weight, convenient for construction
Chemical resistance
Appropriate deflection property, good shock resistance
Excellent healthy characteristic
Smooth inner wall, less water resistance, non-fouling.
Strong resistance to low temperature
Good impact resistance
Good electrical insulation property
Excellent sealing performance, no leakage
Long life