Q420q??????????????????
?????????????????????????????????????? ????λ????????????????????(??????????)??????????????????????????????????????????С??1.50%???????н?????????????????????? ?????????1.50%??2.49%??2.50%??3.49%??3.50%??4.49%??4.50%??5.49%????????????????????д??2??3??4??5???????????磺????????????????????????0.30%??0.95%??0.85%??1.05%??????????S??P????????0.035%?????????????30CrMnSi????
Q420q???????????????????
???????????????????????????????????????????????????????????????鲻?????????????????????????????????????????????????????????????????????????????????????????????????????????????????г??????????????????????????????????????????м?????????????????????
Q420q??????????????????
5??1800??8000+ 32??
5??1800??8000+ 32??
8??1800??8000+ 90??
8??2000??8000+ 70??
10??1800??8000+ 70??
10??2000??8000+ 90??
???????? ???????лл ?? ????? ????:Q420q???????????
?????????Q420q??????????????