Film describes steel as the ideal material for flexible pipe used for culverts in road construction and for highway guardrails. Includes scenes of highway traffic, a scientific explanation for the strength of buried steel pipe, and a lab experiment at Lehigh University showing the strength of steel vs. aluminum.

Many of the scenes in this film were reused in movie "Modern steel for today's highways" (see 86.268 Film #3) which was aimed at a more general audience.