Casting tractor parts GB,GOST,JIS,DIN,ASTM standard ISO9001:2008 Certificate Material:gray iron,ductile iron,steel OEM is ok sand casting ... ductile iron by vacuum casting,sand casting,lost foam casting and CNC machining2)Weight:2-1000kgs3)Process:sand casting,Vacuum casting and lost foam castingOur ... & mechanical documents, test bar and photos into the packing box casting gray iron tractor parts