扁铁理论重量-扁钢规格表扁钢规格、重量表[冶标(GB)704-65]宽度(mm)厚度4567891011121416182022252830重量(kg/m)120.380.470.570.660.75140...
扁铁理论重量扁钢规格表扁钢规格、重量表冶标宽度??5???10量111214(kg/m)16182022252830(mm)?4?重?6?7?8??9120.380.470.570.660.75140.440....
