专营铜合金 GC-CuSn 12 2.1052.04 CuSn12-C-GC CC483K-GC
GC-CuSn12Ni 2.1060.04 CuSn12Ni2-C-GC CC484K-GC
GC-CuSn12Pb 2.1061.04 CuSn11Pb2C-GC CC482K-GC
GZ-CuSn 12 2.1052.03 CuSn12-C-GZ CC483K-GZ
GZ-CuSn12Ni 2.1052.04 CuSn12Ni2-C-GZ CC484K-GC
GZ-CuSn12Pb 2.1061.03 CuSn11Pb2C-GZ CC482K-GZ