文档介绍：目录 1 基础材料............................................................................................................................5 管子与管件用螺纹..................................................................................................5 螺纹结构要素........................................................................................................11 紧固件用螺纹........................................................................................................15 紧固件的性能与材料............................................................................................27 角度与斜角系列....................................................................................................37 2 钢铁材料..........................................................................................................................41 非合金钢................................................................................................................41 低合金钢................................................................................................................47 合金钢....................................................................................................................50 型钢........................................................................................................................64 ........................................................................................................76 ............................................................................................................80 ................................................................................................................81 钢管........................................................................................................................82 钢丝........................................................................................................................92 钢板与钢带.........................................