2020년 7월 16일Categories Copper Alloy Non-Ferrous(비철)B61 C92200, Steam, Valve Bronze, Leaded, CastingB61 C92200, Steam, Valve Bronze, Leaded, Casting STEELMAX Metal Story ASTM B61 C92200 재질은 Leaded Bronze (鉛入靑銅)으로 쾌삭성질을 가지고, steam bronze 또는 valve […]