FIG. 1 is a front/right-side/top perspective view of a drum for drum washing machine showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a front/right-side/top perspective view thereof showing the aspect when the drum is used.

The broken line showing of the washing machine in FIG. 8 is included for the purpose of illustrating portions of environment of the drum for drum washing machine and forms no part of the claimed design.