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方钢理论重量表边长(mm)理论重量(kg/m)边长(mm)理论重量(kg/m)边长(mm)理论重量(kg/m)边长(mm)理论重量(kg/m)边长(mm)50.196172.27317.545624.611105.50.236182.54328.045826.4111560.283192.82338.556028.261206.50.332203.14349.076331.1612570.385213.46359.626533.1713080.502223.83610.176836.314090.636234.153811.247038.47150100.785244.524012.567544.16160110.95254.914213.568050.24170121.13265.34515.98556.72180131.33275.724818.099063.59190141.54286.155019.639570.85200151.77296.65221.2310078.5220162.01307.065523.7510586.5250边长<25mm长5—10米边长26—50mm长4—9米边长53—110mm长4—8米边长>120mm长3—6米100*100*4