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??????????????棺?????????????????????????16Mnq??????????????????????????2900????????????????60?????????????????????????δ???2900????γ???Ч?????????·???????????????????????????????ж???????????????????????????????????????·???????Ч??????????16Mnq?????????????????????????С?
11??17??16Mnq???????????11??21????????????г???????????????????????δ??????г?????????????11??21???????г??????????16Mnq???????????????2630?/???????????????20?/?????14mm HRB400E????????2630?/???????????????30?/??????16Mnq???????????????2790?/???????????????30?/???
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