H beam Shot blasting machinefor shot blasting the surface rust and painted with a protective coat of processing technology. After pre-treatment of steel products can improve the mechanical and corrosion-resistant metal components ability of anti-fatigue properties of steel, extending its life; but also can optimize the production process of steel surface, and is conducive to cutting machine CNC cutting and precision blanking . In addition, pre-processing of steel as a result of comparing the shape of the rules in favor of mechanical and automated spray paint rust, so the use of steel pre-treatment can enhance the efficiency of clean-up, clean-up operations to reduce labor intensity and the pollution of the environment.    In recent years, as a result of the use of PLC control, automation equipment, greater emphasis has been improved.