?????????????
8??1800??8000 35??
8??1800??8000 80??
8??2000??8000 32??
8??2000??8000 42??
8??2000??8000 21??
10??1800??8000 32??
10??1800??8000 80??
?????????????
???????????????????????????????壬????????????????????????????????????β????q????????
????????????????????í??????????A3q?????????????????16q????????????????12Mnq??12MnVq??15MnVNq??16Mnq??????????????4.5~50?????
????????
??????????????????????????????????????????????????????????????????????????????????????????????????????????????塢???,NM360????壬NM400????壬 NM500??????????????????????????????????????е??????????????????;????й???????塣
????5??30?????18*1600*C??q420qd?????????????????????
