The company and production "Brennan" brand HDPE reinforced HDPE hollow wall winding pipe is the use of high-density polyethylene as raw material, high efficiency and high compression ratio by a single-screw extruder rectangular tube, winding through a special molding process, forming a special Hollow "workers" shaped double-walled structure of the pipe. The product has excellent ring stiffness and good strength and toughness, light weight, high impact resistance, not damaged, etc., as a mature product, HDPE hollow wall winding reinforced in foreign countries has been widely used in the country has been Ministry of Construction as the promotion of products.