we have die casting machines of 125T,160T,280T,500T. we can offer die/sand casting according to the customer's requirments. Copper sleeve:1.Material:copper,tin bronze,mangnese brass,silicon brass,nickel copper alloy,copper alloy.2.Process:sand casting,investment casting,die casting and so on.3.drawings--mould making--raw casting--sandblasting--rough machining or finish machining--surface tretment ...