?????????10*1600*C??q550qe????????????г????????????
???????????????????????
8??1800??8000 90??
8??2000??8000 70??
8??2000??8000 32??
10??1800??8000 70??
10??2000??8000 90??
10??2000??8000 32??
12??2000??8000 56??
???????????????????????
????
?????????????MPa 345-305 ????????????bMPa 510-490???????5??21??
Q345QC???????????Q345QC??????
????????????????????????
?????????????????????????????????????????????????????????????β???????????RB1401????????????????????????????????????????????????????????????????????????????????????????RB1405-??RB1401?????????????????????????????????????????
?????????10*1600*C??q550qe?????????????????г????????????
