The ornamental design for a hairironheatingplates, as shown and described.
FIG. 1 is a top perspective view showing an embodiment of a new design for a hair iron heating plates;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is an enlarged right side view of the hair iron in a second, closed position; and,
FIG. 9 is a top perspective view showing the embodiment with an enlarged view showing a projection of a heat plat portion of the hair iron heating plates.
The dashed lines showing portions of the hair iron heating plates are included for the purpose of illustrating environment and form no part of the claimed invention.