国精产品一区一区三区,97久久精品无码一区二区,欧美老妇大P毛茸茸,两根黑人粗大噗嗤噗嗤视频

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????????????????????????λ??????????????????????????????????????????????????????????й??????????????????????Ρ????????????????е???????????????????????? ?????????????????????????????????к???????????????????????C????Si????Mn????S????P????Cr

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????10# 0.07~0.13 0.17~0.37 0.35~0.65 ??0.035 ??0.035

????20# 0.17~0.23 0.17~0.37 0.35~0.65 ??0.035 ??0.035

????35# 0.32~0.39 0.17~0.37 0.35~0.65 ??0.035 ??0.035

????45# 0.42~0.50 0.17~0.37 0.50~0.80 ??0.035 ??0.035

????40cr 0.37~0.44 0.17~0.37 0.50~0.80 ??0.035 ??0.035 0.08~1.10

????25Mn 0.22~0.2 0.17~0.37 0.70~1.00 ??0.035 ??0.035 ??0.25

????37Mn5 0.30~0.39 0.15~0.30 1.20~1.50 ??0.015 ??0.020

??????????????????????λ???????????????????г?--?й???????????????????????????????????????????????????????????????????????????????????????????????????????8-1240??1-200mm????????????????????????????:?????????????????????????,???и????ˉ????????????????;???????????и???????????????????????????????????????????????п????????? ????????????????????ι?????????
      ??????????????γ????????????????8500???????800?????????????????????????????????й?????????????????ú???????????????ˉ????е????????????????????????????????????????????????????????????????30???????С????????????м????????????????????
   ??????????20#??45#??16MN??Q345??A/B/C/D/E????27SIMN??15CrMO??12Cr1MOV??
10CrMO910??304??304L??316??316L??321??P11??P22??P91??T91??