| abstract |
(57) [Summary] A metal tube (12) having an outer surface (13), and a zinc plating, a zinc-nickel alloy, a zinc-cobalt alloy, a zinc-aluminum alloy, which are bonded to the outer surface (13) of the metal tube. A multilayer tube (10) comprising a zinc layer (14) selected from the group consisting of: A surface treatment layer (16) is bonded to the zinc layer (14), the surface treatment layer being selected from the group consisting of zinc / aluminum / rare earth alloys, phosphates, chromates and mixtures thereof. A first polymer layer (18) is bonded to the surface treatment layer (16), the first polymer layer being selected from the group consisting of thermoplastic elastomers, ionomers, nylons, fluoropolymers, and mixtures thereof. To be done. A second polymer layer (22) is bonded to the first polymer layer (18), the second polymer layer being selected from the group consisting of nylon, thermoplastic elastomers, fluoroparimers, and mixtures thereof. It A method for manufacturing a fluid carrying multilayer tube (10) in a vehicle system includes a multi-layer melt-fabricable thermoplastic resin, at least a zinc-based coating (14) and the zinc. Extruding onto a pretreated metal tube (12) with an outer surface (13) having a sealant coating on the base coating (14). |