... 3.Competitive Prices 4.SAE, ISO9001:2008 counterweight iron sand 1 Well and High Quality Control 2,Prompt Delivery 3 ... , ISO9001:2008Application scope : Counterweight , Carbon additive for foundries, Displacement Foundry Pig Iron for foundries. Low carbon grainCounterweight iron Lump Iron 90 ... 8 0.05-0.10 0.03-0.05 Spec:sand ,shot, ball , other Shape.Packing: 1000Kg bags. iron sand for counter weight