... outside polished,60 mesh. As a first manufacturer of tank polishing machine in China ,BOAO has the patent ... diameter ,inner and outside both polished .GP Vessel /tank Polishing Machine Application:Mainly used in the stainless steel ... structure, easy coperation, economical and parctical.GP Vessel /tank Polishing Machine Specification:ModelExternal rangeInner rangeLengthLoading weightGP-300Fφ700-φ3000mm ...