... and their machined products: 1.Material & Standard:grey iron,ductile iron,malleable iron,carbon steel,alloy steel(high Manganese steel,high Chromium steel ... Representative product:machine bed,machine table,bearing stand,housing,casing,cover,valve body,pump body,big ring gear,big pulley, ... ,excavator sprocket,link rod,Bucket link rod,barre liner,grate plate,top grate,open grate,front wall and rack etc.