Features of "CSB" Series Long Reach Tube Expanders for Sugar mills ‘5 Roll’ design is used primarily for rolling thin walled tubes used in sugar mill juice heaters, pans. '5 Rolls’ give you a more concentric, uniform expansion vs. a ‘3 roll’ expander in thin tubes and reduces tube ‘spring ‘ back effect. Use - For bottom plate boiler tube expansion in pans, juice heaters in sugar mills.