管(guan)件(jian)與(yu)管(guan)子的連接(jie)方(fang)式(shi)采(cai)(cai)用(yong)(yong)螺紋連接(jie)，而工(gong)(gong)藝采(cai)(cai)用(yong)(yong)模(mo)鍛成(cheng)型和切削加工(gong)(gong)或利(li)用(yong)(yong)型材(cai)直接(jie)加工(gong)(gong)等(deng)方(fang)法(fa)制造的管(guan)件(jian)稱為鍛鋼制螺紋管(guan)件(jian)。這種(zhong)管(guan)件(jian)的規格較(jiao)小，通常(chang)公稱通徑范圍為DN8～DN100。
管(guan)件(jian)的種類及代號(hao)見(jian)表11-1
