一、熱軋圓鋼技術數據直徑(mm)質量(kg/m)直徑(mm)質量(kg/m)直徑(mm)質量(kg/m)直徑(mm)質量(kg/m)55.566.57891011120.1540.1870.2220.2600.3020.3950.4990.6170.7460.888131415161718192021221.041.211.391.581.782.002.232.472.722.98232425262728303235363.263.553.854.174.494.835.556.317.55 (共 2552 字) [閱讀本文] >>