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;

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 rear view, the right side view, and the left side view of the heat-resistant tube for vertical heat treatment equipment are the same as the front view and thus are omitted. The cross-sectional view of FIG. 5 shows the cross-hatched internal regions, which do not form part of the claimed design.