Features of the Copper cast bearing bushing of digging machine: Material: ZHCuAlFeMnZn Performance: Wear-resisting, good toughness the ingredient and spec according to customer's need Technical process: The modelling, the smelting, the pour into centrifugal mold, takes off one's hat the mouth, the rough machining, the precision work NOTE: Changzhou City Jiarun Coloured Casting foundry specialize in centrifugal casting, alloy casting, gravity casting, sand casting for 11years. We can produce in accordance with your drawing samples