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5??31?????????28*1800*8m??纣?????÷??????????????

?????????2016/5/31
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?????1160

5??31?????????28*1800*8m??纣?????÷??????????????

?纣????????????????????????????<BR>?????????????MPa 345-305 ????????????bMPa 510-490???????5??21??<BR>Q345QC???????????Q345QC?????? <BR><br><br>????????   ??????????????????????????????????????????????????????α????????????????????????????????????????????????λ?? <br><br>?纣????????????????????????12*2200*9690<BR>16??

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?????????????MPa 345-305 ????????????bMPa 510-490???????5??21??
Q345QC???????????Q345QC??????


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?纣????????????????????????

12*2200*9690
16*2200*7430
12*2200*9780
28*1750*5600
18*2000*8000



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