The ornamental design for a rack for mounting on an industrial gas tank, as shown and described.
FIG. 1 is a rear perspective view of a rack for mounting on an industrial gas tank showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a right side elevation view thereof;
FIG. 4 is a top elevation view thereof; and,
FIG. 5 is a bottom elevation view thereof.
The broken lines are shown for the purpose of illustrating portions of the rack for mounting on an industrial gas tank that form no part of the claimed design.
The dot-dash lines define the boundaries of the claim and form no part thereof.