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2019-12-06
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2019-12-06
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2019-12-06
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2019-12-06
规格截面面积重量(kg/m)Ф3.59.620.075Ф412.570.098Ф519.630.154Ф5.523.760.187Ф5.624.630.193Ф...
2019-12-06
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2019-12-06
序号尺寸(mm)截面积cm2理论重量kg/m序号尺寸(mm)截面积cm2理论重量kg/mb1b2tb1b2t1251.201.140.9023903.0010....
2019-12-06
序号尺寸(mm)截面积cm2理论重量kg/m序号尺寸(mm)截面积cm2理论重量kg/mb1b2tb1b2t150251.201.741.3731100503....
2019-12-06