铅黄铜 HPb60-2 HPb59-1 HPb59-2
铅黄铜 C3450 C3..
铅黄铜 HPb60-2 ..
铅黄铜 HPb63-3 ..
磷脱氧铜 C1201 C12..
磷脱氧铜 TP1 TP2..
磷脱氧铜 C2600 C..