... mm diameter ,inner and outside polished,60 mesh. As a first manufacturer of tank polishing machine in China ,BOAO ... 500mm~4000 mm diameter ,inner and outside both polished .GP Vessel /tank Polishing Machine Application:Mainly used in the stainless ... manual polishing, roughness can be as high as 0.28 μ m4.simple in structure, easy coperation, economical and parctical.GP Vessel /tank Polishing Machine ...