1.Well and High Quality Control 2.Prompt Delivery 3.Competitive Prices 4.SAE, ISO9001:2008 counterweight ... iron sand 1 Well and High Quality Control 2,Prompt Delivery 3,Competitive Prices 4,SAE, ISO9001:2008Application scope ... 3.3-4.5 1.60-3.20 0.5-0.8 0.05-0.10 0.03-0.05 Spec:sand ,shot, ball , other Shape ... grain iron for steel making etc. counter weight iron sand 0.2-2.0mm