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

???????????????????????????????-12Cr1MoVG???????????

?????????????:

 ??????????????????????λ???????????????????г?--?й?????????????????????????????????????????????????????ˉ?????????????;??????????????????????????????????????????????????????????????????????????????????8-1240??1-200mm????????????????????????????:?????????????????????????,???и????ˉ????????????????;???????????ˉ?????????ù?|?????????????ù????????????и???????????????????????????????????????????????п????????? ????????????????????ι?????????
      ??????????????γ????????????????8500???????800?????????????????????????????????й?????????????????ú???????????????ˉ????е????????????????????????????????????????????????????????????????30???????С????????????м????????????????????
   ??????????20#??35#??45#??16MN??Q345??A/B/C/D/E????27SIMN??15CrMO??15CrMoG??12Cr1MOV??12Cr1MoVG??20G??13CrMo44??A335P91??T91??P91??T22??P22??P5??Cr5Mo??1Cr2Mo??12Cr2Mo??35CrMo??42CrMo??40Cr??38CrMoAL??10CrMO910??304??304L??316??316L??321??310S??

-12Cr1MoVG???????????:

12Cr1MoVG??????????????

????	C	Si	Mn	Mo	Cr	V
12Cr1MoVG	0.08~0.15	0.17~0.37	0.40~0.70	0.25~0.35	0.90~1.20	0.15~0.30