Tube produced by forming a resin composition in a tube form, which contains a styrene-based thermoplastic elastomer (a) and a polypropylene-based resin (b) and does not contain any softening agent, in which: Styrene-based thermoplastic elastomer (a) is a hydrogenated block copolymer prepared by hydrogenation of a block copolymer comprising at least one polymer block (A) formed by an aromatic vinyl compound and a polymer block (B) formed by isoprene and / or 1,3-butadiene； The content of the polymer block (A) is 5 to 40% by mass with respect to the total amount of the styrene-based thermoplastic elastomer (a) before hydrogenation, the polymer block (B) has a proportion of hydrogenation of 70% or more, and the polymer block (B) comprises a bond 1,2 and link 3,4 in a content of 30 to 85 mol%； the mass ratio of the styrene-based thermoplastic elastomer (a) with respect to the polypropylene-based resin (b), that is, [(a) / (b)], is 90/10 to 40/60； and the tube has a proportion of the intensity of the diffraction peak [I (14)] with a dispersion angle (2θ) of 14 ° with respect to the intensity of the diffraction peak [I (15)] with a dispersion angle (2θ) of 15 °, that is, [I (14) / I (15)], of 1.4 or more in wide-angle X-ray diffraction.Tubo producido por formación de una composición de resina en una forma de tubo, que contiene un elastómero termoplástico a base de estireno (a) y una resina a base de polipropileno (b) y no contiene ningún agente de ablandamiento, en el que: el elastómero termoplástico a base de estireno (a) es un copolímero en bloque hidrogenado preparado por hidrogenación de un copolímero en bloque que comprende al menos un bloque de polímero (A) formado por un compuesto de vinilo aromático y un bloque de polímero (B) formado por isopreno y/o 1,3-butadieno； el contenido del bloque de polímero (A) es de un 5 a un 40 % en masa con respecto a la cantidad total del elastómero termoplástico a base de estireno (a) antes de la hidrogenación, el bloque de polímer
