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    ???q345b??????? 32??3-6 20Cr 40Cr GB8162-2008 GB81?? 7200?/?? ??? ???? ???? 2019/5/31
    ???q345b??????? 720??12-30-7?? 20# 45# GB/T8162  GB/T81?? 7900?/?? ??? ???? ??? 2019/5/31
    16Mn  q345d????? 426??8-16-30?? 16Mn 20# 3?? GB8163-2008  GB6?? 7200?/?? ??? ??? ??? 2019/5/31
    16Mn  q345d????? 180??6-12-20?? 16Mn 20# 3?? GB8163-2008  GB6?? 6800?/?? ???? ??? 2019/5/31
    16Mn  q345b????? 299??8-16-30?? 16Mn 20# 3?? GB8163-2008  GB6?? 6900?/?? ??? ??? ??? 2019/5/31
    16Mn  q345c????? 219??6-12-25?? 16Mn 20# 3?? GB8163-2008  GB6?? 6800?/?? ??? ??? ??? 2019/5/31
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