Patent ID: 7870875

Claim:
A corrugated tube comprising: dented grooves and projecting strips formed on an outer periphery of the corrugated tube and arranged alternately in an entire longitudinal direction of the corrugated tube; and a pair of reinforcing ribs integrally formed with said grooves and projecting strips, said reinforcing ribs projecting from an outer peripheral surface of the dented grooves and extending beyond an outer peripheral surface of the projecting strips, the reinforcing ribs being formed 180° apart and extending uninterrupted in the entire longitudinal direction of the corrugated tube, wherein each of the reinforcing ribs have straight sidewall portions, and gradually decreases in width thereof in a tapered shape as approaching a top part thereof, the straight sidewall portions extending beyond the outer peripheral surface of the projectinq strips which extend uninterrupted in the entire longitudinal direction of the corrugated tube, and an inside of each of the ribs is partly or entirely formed hollow.