material:HT200-350QT450-700,steel,alumimium foundry:sand casting machining:CNC maching a dragon service foundry and casting workpice are produced by customer sample ... ,ASTM,BS,ISO,AISImaterial:HT200-350QT450-700,steel,alumimiumfoundry:sand casting,resin sand and clay sand,lost-foammaching:CNC machining,blasting,drilling,milling,turning ...