... .4~12.5 high impact value spheroidal graphite cast ironDuctile iron casting comply with regulation of the ISO9001-2000 ... ; make manufacturing procedure, offer best suggestions on the design.2, QualityWe have full set quality control system to ... Lathe, Boring, Vertical , Horizontal, Milling, Saw etc.Material: carbone steel,alloy steel,stainless steel, ductile iron & alloy iron etc.Extra EdgesEdges ...