FIG. 1 is a front perspective view of a pipe bending apparatus showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines which define the bounds of the claimed design form no part thereof.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design.