graphite block 1.all kinds of grades,sizes 2.high strength, ... of grades,sizes2.high strength,purity,quality,density3.competitive price4.ablation resistance SIZE:300*100*50, 300*100*40,300 ... *100*30,100*100*200,100*100*150,60*60*200 Cold graphite iron material for chilling, cold iron instead of ... loose, shrinkage problems, and can effectively address the use of cast iron cast iron cold iron resulting ...