Dented steel pipe

FIG. 1 is a front elevation view of a dented steel pipe.

FIG. 2 is a rear elevation view thereof.

FIG. 3 is a top plan view thereof.

FIG. 4 is a bottom plan view thereof.

FIG. 5 is a right side elevation view thereof.

FIG. 6 is a left side elevation view thereof.

FIG. 7 is an enlarged front elevation view of the portion of the dented steel pipe shown in FIG. 1 .

FIG. 8 is an enlarged top plan view of the portion of the dented steel pipe shown in FIG. 3 .

FIG. 9 is a cross-sectional view taken along the line 9 - 9 in FIG. 7 ; and,

FIG. 10 is a cross-sectional view taken along the line 10 - 10 in FIG. 8 .

The length of the dented steel pipe is indeterminate and thus its precise length is not claimed, and the dents are repeated at regular intervals throughout the length of the dented steel pipe.