... almost ten years. We are prossional in polishing tanks,vessel,seal head ,range from 500mm~4000 mm diameter , ... inner and outside both polished .GP Vessel /tank Polishing Machine Application:Mainly used in the stainless ... simple in structure, easy coperation, economical and parctical.GP Vessel /tank Polishing Machine Specification:ModelExternal rangeInner rangeLengthLoading weightGP-300Fφ ...