????????????????????????????16Mn?????,16Mn???,16MnDG??????20#??20G??16Mn??35#??45#??Q345(B.C.D)??27SiMn??40Cr??35CrMo??42CrMo??15GrMoVG?? 12CrlMoVG??1Cr5Mo????й???????????GB/T8162-2008???????GB/T8163-2008?????????ˉ??GB3087-2008???????ˉ??GB5310-2008????????ù?GB6479-2000??16Mn?????????????GB9948-2006??????????????????????????????????????????????????????????????????????????????????о?????????????????λ?????????????????????????????
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