A pipe fastening structure includes an end member 16 attached to an end part of a metal pipe 10, and a nut 12 for fastening the end member 16 attached to the metal pipe 10 to a counterpart 14. In the pipe fastening structure, the end member has a first sph...

An object of the invention is to provide a fuel injector delivery pipe which does not require a tool for holding an upper part and lower part together, and thereby eliminate the process of attaching and removing the tool, and increases the efficiency of th...

A trivalent chromate coating having improved surface smoothness is used as an alternative to a hexavalent chromate coating serving as a protective coating. A piping member of a steel for an automotive fuel line is coated with a multilayer coating consistin...