... S 0.05%max,HS code:3801100090 carburizer for steel making,nodular cast iron Specifications as bellow:Graphitized Petroleum Coke/Artificial ... main items are used as carbon additives for steelmaking,foundry,casting and alloy,including Calcined Petroleum Coke(CPC),Amorphous ... ,Carbon Anode Scrap,Carbon Electrode Paste,and so on.The detailed specification of Graphitized Petroleum Coke(GPC) is clearly ...