1.1 This specification covers polymer precoated corrugated steel pipe intended for use for storm water drainage, underdrains, the construction of culverts, and similar uses. Pipe covered by this specification is not normally used for the This specification covers polymer precoated corrugated steel pipe for use for water drainage, underdrains, the construction of culverts, and similar uses. The steel sheet used in fabrication of the pipe has a polymer protective coating over a metallic