In one example, the guide rail body is made from extruded aluminum and the covering comprises steel.

The railroad rail is formed from a single bent railroad rail having only a single bend defined by the head section, web section, and base section of the body of the railroad rail.

Provided is a fuel injector rail that easily absorbs pulsations, vibrations and the like, reduces stress the stress on the body thereof, and has improved resilience against high pressure.