... polished,60 mesh. As a first manufacturer of tank polishing machine in China ,BOAO has the patent for almost ten ... ,inner and outside both polished .GP Vessel /tank Polishing Machine Application:Mainly used in the stainless steel vessel, container’ ... 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 ...