????6??6????????12*1500*6000??q460qc?????????????????????????
??????????????
????
?????????????MPa 345-305 ????????????bMPa 510-490???????5??21??
Q345QC???????????Q345QC??????
????????????
??????????????
40*3000*10060
40*3100*9900
40*3100*9900
40*3100*9900
????????
??????????50????????м??????20?????????????38000??????????2800??????????40000????????2000?????????????30???????2???25????????????????й?????????????г???????????????????????????????и?????????????12?????160??????????????????????????????????????е?豸???????????????и????????????????8-600mm???4.6m??????15m???????и??????????????????????????????????к?????????????????????豸??????????????????????????????????????и??????????б???????????????μ????????????????簲????????????????????????????????????
????6??6????????12*1500*6000??q460qc?????????????????????????
