(C17200铍铜)c17200铍铜棒
H62黄铜 H65黄铜
黄铜管//黄铜棒
(C36000铅黄铜)//铅..
(C17200铍铜)c172..
ANK570钨铜合金化学成分..
(无氧铜板)优质无氧铜板