Resinous tube and fuel system piping tube

Abstract

A resinous tube for piping in a fuel system of an automotive vehicle. The resinous tube comprises at least one first cylindrical resin layer (A) including at least one resin selected from the group consisting of polybutylene terephthalate (PBT), polybutylene naphthalate (PBN), polyethylene terephthalate (PET) and polyethylene naphthalate (PEN). At least one second cylindrical resin layer (B) is formed generally coaxial with the at least one first cylindrical layer and includes at least one of polybutylene terephthalate (PBT) copolymer and polybutylene naphthalate (PBN) copolymer. In this tube, a cylindrical resin layer forming an innermost layer of the resinous tube is electrically conductive, fuel being in direct contact with an inner surface of the innermost layer.

Dependencies are inferred from the claim text.