GCr15??и??|20#???????|45#??и??|??и?????
?????????????25-80mm??и??????2-16mm???????20#??45#??16Mn??GCr15??
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??????и?????????????????????????б??????????G????????и???GCr6?? GCr9??SiMn????GCrl5??SiMn)???????и???GSiMnV??Re????GSiMnMoV??Re????GMnMoV??Re?????????и???G20CrMo??G20Cr2Mn2Mo?????????????и???9Cr18??Mo?????
??????и???????????????????????????????????????????????????????????????С?????????????????????????????????????С???????????и????????????????????е??Ч???????????????????Χ?????????????????ɡ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????С???????????????????????????????????????????????и????????????????????ˉ???+?????????????????????????????????+????????????+????????????????????и????????
?????????????????????????????????????????????????????????????????????????????????????????С???????????????????????????????????????????????????????????,??????????????20#??45#??16MN??Q345??A/B/C/D/E????27SIMN??15CrMO??12Cr1MOV??10CrMO910??304??304L??316??316L??321??P11??P22??P91??T91.??й???GB8162-99?????GB8163-99????????????ù?????????GB3087-99??GB5310-85????????ˉ?ù??GB5312-8???ù??...
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