Customized steel and Iron Casting Smooth surface,Tight Tolerance Material:Steel,SS,Iron,Low alloy steel ... Material: Steel,Stainless steel,Cast iron, alloy steel,etc3.Good surface,Tight tolerance,Fast delivery4.Standard:GB,AISI, BS,DIN,ASTM5 ... making-Pouring-Sand (glass ball)blasting-CNC machining-Inspection-Assembly.8.Surface treatment: painting,polishing, plating, shot blasting, sand blasting.9. ...