Graphitized petroleum coke/GPC
It used as carburizer in metallurgy industry,reducer in chemical industry,foundry modifier,fireproof ect.
C 98.5%min S 0.05%min Ash 1%min V.M 1%min Moisture 0.5%max
Size:0.5-3mm,0-1mm,0.5-5mm,1-5mm,3-8mm,etc
http://www.graphiteblock.com/graphite-electrode-scrape/