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??????????????и??????????????66??
Q345qC?????????????????????
16MnDR??????????????????0.16%??D-????????R-????????????(????????????????????????????????б?????????1.6%?????д??16Mn),16MnDR?????? -40????????????塣 16MnDR????????????????????? ??б????GB3531?? ????磬???μ?????????????GB709??涨 ???????????????????????????GB247???й?涨
Q345qC??????????????????????
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Q345qC????????????????????
8* 2200*8000+ 32??
10* 2200*8000+ 98??
139*1684*4688+ 32??
12*2200*8000+ 98??
16*2200*8000+ 78??
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COPYRIGHT ?????????????????? ????????ICP??2021038300?? ???????????????