管(guan)(guan)件(jian)(jian)(jian)(jian)與管(guan)(guan)子的(de)連(lian)接方式采用螺紋連(lian)接，而(er)工(gong)藝(yi)采用模(mo)鍛成型和切削加(jia)工(gong)或利(li)用型材直接加(jia)工(gong)等方法制造的(de)管(guan)(guan)件(jian)(jian)(jian)(jian)稱(cheng)為鍛鋼制螺紋管(guan)(guan)件(jian)(jian)(jian)(jian)。這(zhe)種(zhong)管(guan)(guan)件(jian)(jian)(jian)(jian)的(de)規格較小，通常公稱(cheng)通徑(jing)范(fan)圍為DN8～DN100。
管件(jian)的種(zhong)類(lei)及代(dai)號見表11-1
