Abstract: The present cooling device includes: when cooling regions obtained by dividing an entire cooling region into a plurality of portions in a steel sheet conveyance direction and three or more portions in a width direction are set as divided cooling surfaces, a cooling water nozzle 23 and a switching device that switches between collision and non-collision of cooling water jetted from the cooling water nozzle 23 with the divided cooling surface, the cooling water nozzle 23 and the switching device provided for each of the divided cooling surfaces; and a control device that controls operation of the switching device based on a width-direction temperature distribution. The cooling water nozzle 23 has a jet axis P inclined with respect to a vertical line to the entire cooling region when viewed in the steel sheet conveyance direction, and the cooling water goes to the side opposite to the cooling water nozzle 23 in the width direction after colliding with the divided cooling surface.

Abstract: The present cooling device includes: when cooling regions obtained by dividing an entire cooling region into a plurality of portions in a steel sheet conveyance direction and three or more portions in a width direction are set as divided cooling surfaces, a cooling water nozzle 23 and a switching device that switches between collision and non-collision of cooling water jetted from the cooling water nozzle 23 with the divided cooling surface, the cooling water nozzle 23 and the switching device provided for each of the divided cooling surfaces; and a control device that controls operation of the switching device based on a width-direction temperature distribution. The cooling water nozzle 23 has a jet axis P inclined with respect to a vertical line to the entire cooling region when viewed in the steel sheet conveyance direction, and the cooling water goes to the side opposite to the cooling water nozzle 23 in the width direction after colliding with the divided cooling surface.

Abstract: A first tube is a medical tube provided with a first portion, a second portion and a third portion in this order from the proximal end side toward the distal end side and is made of a resin. At the second portion, the outer diameter is smaller than the outer diameter of the first portion and the inner diameter is substantially equal to the inner diameter of the first portion. At the third portion, the outer diameter and the inner diameter are respectively smaller than the outer diameter and the inner diameter of the second portion. In this manner, a medical tube in which the outer diameter of the proximal end side is relatively large and the outer diameter of the distal end side is relatively small while securing the inner diameter having a sufficient size at the distal end side can be provided.

Abstract: A medical tube includes a first portion, a second portion, a third portion, and a fourth portion in this order from a proximal side to a distal side thereof. The first portion has a tubular resin layer, the second portion has a tubular inner layer and outer layer, the third portion as an inner layer and outer layer, and the fourth portion has a tubular resin layer. When flexural rigidity of the first portion, the second portion, the third portion, and the fourth portion is G1, G2, G3, and G4, respectively, the flexural rigidity of each portion being configured to have a relationship with each other portion based upon the following expression (1): G1>G2>G3>G4??(1).

Abstract: A medical tube includes a first portion, a second portion, a third portion, and a fourth portion in this order from a proximal side to a distal side thereof. The first portion has a tubular resin layer, the second portion has a tubular inner layer and outer layer, the third portion as an inner layer and outer layer, and the fourth portion has a tubular resin layer.

Abstract: A first tube is a medical tube provided with a first portion, a second portion and a third portion in this order from the proximal end side toward the distal end side and is made of a resin. At the second portion, the outer diameter is smaller than the outer diameter of the first portion and the inner diameter is substantially equal to the inner diameter of the first portion. At the third portion, the outer diameter and the inner diameter are respectively smaller than the outer diameter and the inner diameter of the second portion. In this manner, a medical tube in which the outer diameter of the proximal end side is relatively large and the outer diameter of the distal end side is relatively small while securing the inner diameter having a sufficient size at the distal end side can be provided.