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45#????,???????45????????г??????????????????1.0~4.0mm???
45???,??GB?е?з?,JIS?г??:S45C,ASTM?г??1045,080M46,DIN???:C45
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50*2200*8000+ 32??
60*2200*7000+ 75??
50*4030*555+ 98??
70*2200*9500+ 32??
80*2200*8000+ 56??
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