Corrugated tube and wire harness

A tubular corrugated tube inside of which a conductor line is to be arranged, the corrugated tube comprising:

• a rigid portion which is formed in an end portion in a longitudinal direction of the tube, and has a first half-circumference portion having a recess/projection-repetitive structure in which grooves and projection strips extending in a circumferential direction of the tube are arranged alternately in the longitudinal direction of the tube and a second half-circumference portion that is the remaining part other than the first half-circumference portion and has a straight structure having no grooves or projection strips;
• a bellows portion which is formed in a center portion in the longitudinal direction of the tube, and has the first half-circumference portion and the second half-circumference portion both of which have the recess/projection-repetitive structure;
• and
• a gradually varying portion which is formed between the rigid portion and the bellows portion in the longitudinal direction of the tube and has:
• the first half-circumference portion having the recess/projection-repetitive structure, and
• the second half-circumference portion having a gradually varying structure in which at least two depths of the grooves and heights of the projection strips decrease gradually from the bellows portion to the rigid portion.