... Bosun Cast Steel Shot 2) For shot blasting / peening machine 3) High quality 4) Long durability 5) High strength Product ... in china mainland.Size: S70,S110,S170,S230,S280,S330,S390,S460,S550,S660,S780Diameter: 0.2mm,0.3mm,0 ... plates and steel pipes, especially used in shot blasting machine and penning machine.Main ChemistryChemistry(C) 0.70-1.20%(Mn) ... 0HRC(±40HV)Minumum Density 7.2g/cm3 steel shot S330