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4.8 round bar: q195 & q235 material 8.8 round bar: 45 #. 40 cr 10.9 round bar: 40 cr，42crmoB7 & B7m round bar: 42 crmo, 4140
4.8 round bar: q195 & q235 material 8.8 round bar: 45 #. 40 cr 10.9 round bar: 40 cr，42crmoB7 & B7m round bar: 42 crmo, 4140
