大直径QAl9-5-1-1铝青铜圆棒
轴衬轴套用QAl9-5-1-1铝青铜棒
QAl9-5-1-1铝青铜挤压棒 定尺零切
高强度QAl9-5-1-1铝青铜棒
国标QAl9-5-1-1耐热铝青铜棒
高强度耐热QAL5铝青铜棒
批发QAL5铝青铜棒 铝青铜车光铜套
轴承加工用QAL5耐磨铝青铜棒
QAL5走心机用铝青铜棒
国标QAL5铝青铜挤压棒