Polypropylene skeleton reinforcing internal-rib winding arrangement wall pipeline

The utility model discloses a gather the third of the ten heavenly stems rare skeleton reinforcing internal-rib winding arrangement wall pipeline is because this bellows passes through the direct spiral winding of multichannel cavity tubular product to hug closely fixed forming from one another, cavity tubular product is hugged closely from one another has more area of contact, can ensure fixed connection's intensity, saves processing preparation process simultaneously, but also has the better ring stiffness and higher intensity, and the solve is the problem that exists of ordinary bellows in the past, and this utility model is used for the bellows production field.