| abstract |
A resin tube has at least an inner layer (1) formed of a fluorine-containing resin and an outer layer (3) formed of a resin, which has insufficient adhesion property against the resin. containing fluorine, and an outer surface of the inner layer (1), which is in contact with said outer layer (3), is subjected to a surface treatment to improve adhesion, and the inner layers (1) and (3) formed in superposition are subjected to heat treatment at a temperature between 150degree and the melting point of the outer layer. Application in particular to fuel circulation pipes in a motor vehicle. |