??????????????
10??2000??8000 52??
10??2000??8000 42??
10??2000??8000 35??
12??1800??8000 42??
12??2000??8000 42??
??????????????
????????HR??
??HB>450??????????С?????????ò????????????????????????????????????????120???????????????1.59??3.18mm?????????????????????????棬??????????????????????????????????????
????????
??????????????????????????????????
???????????????????????????????????????????
?????????????????????????????????????????????л??????????
?????????????14*1600*C??q345qd???????????????
