Tank polishing machine for different tank vessel,sea head,range from 500mm~4000 mm diameter ,inner and outside polished,60 mesh. ... years. We are prossional in polishing tanks,vessel,seal head ,range from 500mm~4000 mm diameter ,inner and outside both polished .GP ... in the stainless steel vessel, container’s inside or outside from 60-400 mesh, with mirror polishing or flat gloss.Advantage ...