Q345qE??????????? ???????
10??2000??8000+ 32??
12??2000??8000+ 56??
12??2000??8000+ 70??
14??2000??8000+ 35??
14??2000??8000+ 70??
Q345qE??????????? ???????
???????????????????????????????壬????????????????????????????????????β????q????????
????????????????????í??????????A3q?????????????????16q????????????????12Mnq??12MnVq??15MnVNq??16Mnq??????????????4.5~50?????
????????к??????????
?????????????????????????????С????С???????????????3?·???????????????226.61????
?????????;???????????????????????θ??????и?Э???????????4?????????????????????
????4.69%?????й????????????и???????????????
???????? ???????лл ?? ????? ?????Q345qE???????????
????????5mm???Q345qE??????????? ???