B148-9A铜合金B148-9A铜合金紫铜黄铜青铜白铜镍铬镉合金纯钛合金制品 紫铜类（纯铜）：T2.C1100.C11000.无氧铜TU1.C1020.C10200.加磷脱氧铜TP2.C1220.C12200.黄铜:C2300.C23000.H80.C2400.C24000.H