1.2355材質單1.2355應力消除
1.2355金屬質材單熟悉1.2355今夭報價表1.2355快訊1.2355護膚品簡單1.2355無機化學工業好分等等這些請見介紹書:++++++++++++++++++金屬質材單無機化學工業好分++++++++++++++++++1.2355素材號:1.2355EN鋼材型號:50CrM,,oV13-15實行規范標準:ENISO4957工具軟件鋼C0.45-0.55Si0.2-0.8Mn0.5-0.9Pmax0.03Smax0.02Cr3-3.5Mo1,,.3-1.7V0.1,,5-0.35硬性HB:248以內是相應的1....
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