海量資源,盡在掌握
 普通碳素鋼電線套管技術數(shù)據(jù)見表23-3-3。表23-3-3普通碳素鋼電線套管技術數(shù)據(jù)公稱尺寸(mm)外徑(mm)外徑允許偏差(mm)壁厚(mm)理論質(zhì)量(不計管接頭,kg/m)1312.70±0.201.600.4381615.88±0.201.600.5811919.05±0.251.800.7662525.40±0.251.801.0483231.75±0.251.801. (共 288 字) [閱讀本文] >>