... wheel ISO9001:2008 Material:Iron,steel,alloy Process:sand casting OEM casting machinery parts1.Material:grey ironGG15,GG20 ... ,GG25,GG30,ductile iron 400-18,450-10,500-7,steel, ... supply all the necessary assistantQuality control: (1) Machinery properties and Chemical components testing after raw casting(2 ... and a machining shop. casting steel machinery wheel