... for removing rust and enhancing adhesion before hull painting.3. Other industries: Oil tank rust-removing and reinforcing; ... coal injection truck, bulk cement truck, sandblast, big inch grout hose, white powder and dredging.Blasting materialsQuartz sand, steel shot, ... ,it include:3/4,1,1-1/4,1-1/2,1-3/4,2,2-3/8,2-1/2,3,3-1/2,4,5, ... 6,7,8,10,12,18 ect. 2 inch concrete ...