Vertical stainless steel storage tanks are made of stainless steel material, which is divided into tank shell, manhole, tank CIP spray ball, vent filter, feed port and discharge port etc. The tank shell is polished inside surface as Ra<0.45um, and outside surface as Ra<0.8um. The liquid level gauge is used to observe the storage capacity in the tank. The tank CIP spray ball is used to clean the inside shell of the tank.