?????377*8-9-10-12-14-16-18 ???????????GB/T8163-2008
?????377*20-22-25-28-30-35-38-40 ??????????????
?????377*45-50-55-60-65-70 ???????????????
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??????????????????????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??