Heat-resistant Tube for Vertical Heat Treatment Equipment

FIG. 1 is a perspective view of a heat-resistant tube for vertical heat treatment equipment showing our new design;

FIG. 2 is a front view thereof, the rear view, the right side view, and the left side view are omitted since the rear view, the right side view, and the left side view are the same as the front view;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a cross-sectional view taken along the line 5 - 5 in FIG. 3 .

The cross-sectional view of FIG. 5 shows the cross-hatched internal regions, which do not form part of the claimed design.