Ball with supersonic spraying material coatings protect valves and actuators against wear, erosion, chemical attack and other forces that threaten their durability and effectiveness. Ball with supersonic spraying material(HVOF) has characteristics as below sheet. Furthermore, HVOF is widely used in energy, glass, chemical industry, automobile, metallurgy, paper making, aerospace and high end mechanical processing equipment which has advantages such as wear-resisting, reinforcement, anti-corrosion, thermal barrier and other excellent features. Materil Coating Hardness Coating Porosity Coating Oxygen Content Characteristic Ni60 HRC 57-62 1% 2% Working temperature -200℃ to +500℃. Hardness, wear resistant and corrosion resistant. resustant to…