| abstract |
(57) 【Abstract】 PROBLEM TO BE SOLVED: For expansion of pipes for water supply and hot water supply, there is little expansion due to heat, and even if a high-temperature transport fluid flows inside, troubles due to thermal deformation do not occur and the rigidity is higher. Providing a multilayer tube suitable for. A multi-layer tube having at least two layers, the method comprising: The innermost layer is made of a butene-based polymer composition, and at least one layer other than the innermost layer is (A) a polyolefin resin 9 A polyolefin resin composition containing 5 to 5 parts by weight, (B) a filler of 5 to 95 parts by weight, and (C) a modified polyolefin resin in an amount of 0.1 to 10 parts by weight per 100 parts by weight of (A + B). Multi-layer tube. |