It is a type of pipe made from HDPE as raw material, consumed as rectangular pipe blank, and formed by winding and welding. Due to their common molding process, large-diameter pipes with a diameter of up to 3000mm can be consumed, which is difficult or even impossible to achieve with other consumer processes. This type of pipe has fundamentally different functions from double wall corrugated pipes, and the pipeline connection mainly uses hot melt tape connection method, which has a slightly higher connection cost than double wall corrugated pipes. In addition, a secondary defect of the tube is that it consumes more raw materials than indirectly extruded double walled corrugated tubes under different diameters and ring stiffness, resulting in higher consumption costs.Produced by Tielong MachinerySpiral tube production lineCurrently used in municipal engineering projects in multiple places