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. We can supply high quality copper casting products, and our price is lower.