??????????|?????Q345B?????|?????16Mn???????
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Q345B\16Mn 76*4 *5*6*8 5300?
Q345B\16Mn 89*4.5*5*6*7*8 5300?
Q345B\16Mn 102??108*5*6*8*10 5300?
Q345B\16Mn 133*5*6*8*10 5300?
Q345B\16Mn 140*6*8*10*12 5300?
Q345B\16Mn 159*6*8*10*12*15 5300?
Q345B\16Mn 168??180??*6*8*10*12*14*16 5350?
Q345B\16Mn 194??219*8*10*12*14*16*18*20 5350?-5500?
Q345B\16Mn 245??273*8*10*12*14*16*18*20 5350?-5500?
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