casting ductile iron tractor parts ISO 9001:2008 Material:sand casting FCD45 sand casting ... 450-101.Material:grey ironGG15,GG20,GG25,GG30,ductile iron 400-18,450-10,500-7 by vacuum casting,sand casting ... (2)Hardness checking(3)Dimensions testing(4)Prevailing microstructure testing tractor casting FCD45 parts