PE  double-wall corrugated pipe is a kind of pipe with corrugated structure, which is made of HDPE with necessary additives as the main raw material and processed by extrusion molding. The inner wall is flat and smooth, and the outer wall is corrugated. The inner and outer walls are hollow and tightly fused ring structures. It has corrosion resistance, long service life, low flow friction resistance for its smooth inner wall, integrated molding, uniform performance, etc.