???????????????
??????????????????
6??1500??8000 21??
6??1500??8000 42??
6??1500??8000 35??
6??1500??8000 21??
8??2000??8000 64??
??????????????????
???????????????????????????????壬????????????????????????????????????β????q????????
????????????????????í??????????A3q?????????????????16q????????????????12Mnq??12MnVq??15MnVNq??16Mnq??????????????4.5~50?????
?????????????????7.0*1.5*6??q620qe???????????????????
