... casting 3. Genuine manufacturer 4.ductile iron elevator parts ductile iron elevator parts:Materials: gray iron, ductile iron, carbon ... , oiled, zinc, nickel, chrome plating, painting, hot dip galvanized and powder coating Available processes: CAD/CAM ... iron, construction machinery parts and other industry machinery parts Equipment: Laboratory:Brife Introduction of our foundry: Botou Hengsheng ...