铜铝硅钴合金 铜镍硅锰合金 铜镍硅合金 铜镍铝锰合金 铜镍锡合金 C19002 C19010 C19015 C19020 C19025 C63800 C64725 C70250 C70260 C70265 C70310 C63800 (铝青铜) C70250 (铜镍l) C70260 C19025 (高铜合金,NB109) C19002 C19010 C19015 C19020 C19025 C63800 C64725 C70250 C70260 C70265 C70310 C63800 C70250 C70260 C19025 NB109 C19002, C19010, C19015, C19020, C19025, C63800, C64725, C70250, C70260, C70265 C70310
