TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Property: The innermost material layer is hot water resistant, acid and/or alkali resistance, or electric resistance at least 1x10power6OMEGA.cm.Preferred Component: The laminated layer is formed by a single fold of spiral winding or longitudinal lapping of a tape of a laminated sheet formed by holding the foil between resin films. The barrier layer forms a part of the wall surrounding the innermost layer and is surrounded by a fiber-reinforced layer. The innermost and barrier layers, or every adjoining layers are bonded to each other with an adhesive strength of at least 5 kgf/inch. The hose has its wall treated with an extraction medium under heat aging conditions so that any matter to be dissolved may be removed by extraction prior to its use. The ends of the walls are connected with a stainless steel pipe. An inner surface of the wall is treated for adhesion to an outer surface of the pipe, and the inner and outer surfaces are fastened by a sleeve.    TECHNOLOGY FOCUS - POLYMERS - Preferred Material: The rubber material is ethylene-propylene-diene terpolymer rubber (EPDM), ethylene-propylene copolymer rubber (EPM), silicone-modified EPDM, silicone-modified EPM, fluororubber (FKM), or butyl rubber. The rubber material is preferably EPDM or EPM cured by a peroxide without any zinc oxide.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Material: The barrier layer is a metal laminated layer formed by having a metal foil held between the two resin films. EXAMPLE - The hose had an innermost wall layer of EPDM rubber cured by a peroxide without zinc oxide, and having a thickness of 1.2 mm. The innermost rubber layer was surrounded by a laminated layer formed from a laminated sheet having an aluminum foil held between two polyamide films, an intermediate rubber layer formed from butyl rubber and having a thickness of 0.5 mm, a reinforcing layer formed by winding polyethylene terephthalate yarn spirally, and an outer rubber layer formed from EPDM and having a thickness of 1 mm. Results showed that the inventive hose was flexible, permeable, pressure resistant, heat resistant, hydrogen resistant, steam resistant, acid resistant, alkali resistant, electric resistant, and had an improved adhesive strength.