A tube including a hydrogenated block copolymer (a), wherein the hydrogenated block copolymer includes in the molecule thereof a polymer block (C) having a conjugated diene compound as a main component thereof, a polymer block (B) having a conjugated diene compound as a main component thereof, and a polymer block (S) having a vinyl aromatic compound as a main component thereof, and, in the hydrogenated block copolymer (a), the content of the polymer block (C) having a conjugated diene compound as a main component thereof is 1-30% by mass, the content of the polymer block (B) having a conjugated diene compound as a main component thereof is 69-98% by mass, the content of the polymer block (S) having a vinyl aromatic compound as a main component thereof is 1-20% by mass, the vinyl bonding amount prior to hydrogenation in the polymer block (C) having a conjugated diene as a main component thereof is 1-25 mol%, the vinyl bonding amount prior to hydrogenation in the polymer block (B) having a conjugated diene as a main component thereof is 60-100 mol%, and the hydrogenation rate of the hydrogenated block copolymer (a) is 80 mol% or greater.本發明係一種管件，其係含有氫化嵌段共聚物(a)者，且 上述氫化嵌段共聚物(a)於分子中含有： 以共軛二烯化合物為主體之聚合物嵌段(C)、 以共軛二烯化合物為主體之聚合物嵌段(B)、及 以乙烯基芳香族化合物為主體之聚合物嵌段(S)； 上述氫化嵌段共聚物(a)中的上述以共軛二烯化合物為主體之聚合物嵌段(C)之含量為1～30質量%，上述以共軛二烯化合物為主體之聚合物嵌段(B)之含量為69～98質量%，上述以乙烯基芳香族化合物為主體之聚合物嵌段(S)之含量為1～20質量%， 上述以共軛二烯化合物為主體之聚合物嵌段(C)之氫化前之乙烯基鍵結量為1～25 mol%，上述以共軛二烯化合物為主體之聚合物嵌段(B)之氫化前之乙烯基鍵結量為60～100 mol%，上述氫化嵌段共聚物(a)之氫化率為80 mol%以上。
