铝青铜 QAL7 QAL9-4 C63000
纯铜 T2 C11000..
铬青铜 QCR0.6-0...
铝青铜 C6300 C6..
铝青铜 C6301 C6..
铝青铜 C60600 C..
铝青铜 C63020 C..