1.2355材質單1.2355應力消除
1.2355木頭的素材單熟知1.2355現在報價表1.2355新聞1.2355企業產品概況1.2355生物成份孩他請見講解:++++++++++++++++++木頭的素材單生物成份++++++++++++++++++1.2355素材號:1.2355EN鋼種:50CrM,,oV13-15程序執行要求:ENISO4957平臺鋼C0.45-0.55Si0.2-0.8Mn0.5-0.9Pmax0.03Smax0.02Cr3-3.5Mo1,,.3-1.7V0.1,,5-0.35抗拉強度HB:248之上是想關1....
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