??????????????
????????????????????????????????????????ú??????β????q????????
????????????????????????A3q??????????????16q????????????????12Mnq??12MnVq??15MnVNq??16Mnq????????????4.5~50?????
????????????
??????????????
20*2200*10300 32??
25*2200*12050 90??
30*2200*8000 98??
35*2090*10160 65??
40*2200*8000 21??
45*2200*8000 98??
???????????????
????10??25??????????????????147.92???????????1.93??????????????????е???????????????????г????????????г?????????硣????????????????????????г???????????????????????
????5??26???????38*1800*8m??q550qe???????????????
