... polishing ball, silicone ball, corundum ball,etc. sponge rubber ballwe can supply the sponge rubber ball, polishing ball, silicone ball, corundum ... coated ball for your company. Our sponge ball is mainly used for Condenser cleaning of power plant ... and hardness settlings of the pipe, etc. 1.Commodity: sponge rubber ball 2.Diameter: 6mm-45mm 3.Withstand high temperature ...