CW452K德国铸造青铜棒铜管屈服强度
CW452K铜板 CW452K铜棒 CW452K铜线 CW452K铜带 CW452K厂家来样定图专业定做高精度铜管 CW452K铜材化学成分 CW452K铜材力学性能 CW452K铜材今日价格行情 CW452K北京市天津
GC-CuSn 12 CuSn12-C-GC CC483K-GC
CW452KNi CuSn12Ni2-C-GC CC484K-GC
CW452KPb CuSn11Pb2C-GC CC482K-GC
GZ-CuSn 12 CuSn12-C-GZ CC483K-GZ
GZ-CuSn12Ni CuSn12Ni2-C-GZ CC484K-GC
GZ-CuSn12Pb CuSn11Pb2C-GZ CC482K-GZ
