Patent ID: 8636037

Claim:
A flexible tube for fluid transport, comprising at least: a tube body having flexibility, a resin layer provided to the outer periphery of said tube body, an internal pressure-resistant reinforcing layer provided to the outer periphery of said resin layer, an axial-force reinforcing layer provided to the outer periphery of said internal-pressure-resistant reinforcing layer, and a protective layer provided to the outer periphery of said axial-force reinforcing layer, wherein: said axial-force reinforcing layer is formed from reinforcing strips comprising a metallic strip body coated by coating resin; the adhesive strength between said coating resin and said strip body has the peel strength of 10 N/cm or more according to the 180° peel test prescribed by ISO8510-2 ASTMD903; said coating resin is made of adhesive resin chosen from among adhesive polyolefin system resin, adhesive fluorine system resin, polyamide system hot melt resin, epoxy system resin, acrylic system resin, unsaturated polyester system resin, phenol system resin, melamine system resin, urea system resin, silicone system resin, urethane system resin, and polyimide system resin; an outer layer side resin layer is further provided to the outer periphery of said coating resin, and thus the resin layer on the outer periphery of said strip body has at least two-layer structure; the abrasion resistance of said outer layer side resin layer has the abrasion loss of 30 mg/1000 times or less in the Taber abrasion test prescribed by ISO9352 ASTMD1044; and said outer layer side resin layer is made of a resin chosen from among polyethylene system resin, polypropylene system resin, polyamide system resin, fluorine system resin, polyester system resin, acrylic system resin, styrene system resin, polyvinyl chloride, modified polyphenylene ether, and polyphenylene sulfide.