Profile: Dongying Sinco Pipe Industries Co., Ltd specializes in providing HDPE piping systems. Our main products contain HDPE water supply pipes, HDPE dredging pipes, and HDPE gas pipes. Our pipes are widely used in the areas of municipal infrastructure construction, industrial, agricultural, chemical, oil, mining, farming, road traffic and civil construction pipeline system. High-density polyethylene (HDPE) double-wall corrugated pipe is a new type of pipe with smooth inner wall and ring-shaped outer wall structure. It is an environmentally friendly product that combines the corrosion resistance of plastic with the toughness of steel.