Blast Room is widely used in shipbuilding industry, military, and     engineering machinery, petrochemical machinery, hydraulic machinery and     bridge structures, locomotives and     etc. and     is suitable for large metal structure before painting surface blast cleaned and     shot peening treatment .sandblasting processing can thoroughly clean the surface of work piece of welding slag, rust, descaling, grease, improve surface coating adhesion, achieve long-term anti-corrosion purpose. In addition, using shot peening treatment, which can eliminate the work piece surface stress and     improve the intensity.