... layer: Using natural rubber, polyurethane rubber and other composite rubbers as major materials, with the addition of special ... life and good view.Main typesNormal sand blast rubber hose; rubber hose for waterway desilting, cementing pump truck, concrete, grout ... injection truck, bulk cement truck, sandblast, big inch grout hose, white powder and dredging.Blasting materialsQuartz sand, steel shot, ...