... years. We are prossional in polishing tanks,vessel,seal head ,range from 500mm~4000 mm diameter ,inner and outside ... times of the manual polishing.2.Polishing speed: 6-8m2 one time3.competely solve the low efficiency, uneven, poor precision ... easy coperation, economical and parctical.FP Dish Polishing/Seal head polishing Machine Specification:ModelExternal rangeInner rangePlate’s loading weightPlate’s ...