machined grey and ductile iron cast 1)Material: grey iron GG20, GG25 ductile iron GGG40,GGG45 2)Weight:0.5-300KG 3)Machinin machined ... grey and ductile iron cast1)Material ... : grey iron GG20, GG25 ductile iron GGG40,GGG452)Weight:0.5-300KG3)sureface ...