管(guan)(guan)件(jian)(jian)與管(guan)(guan)子的(de)連(lian)接方式采(cai)用(yong)螺紋連(lian)接，而工(gong)藝采(cai)用(yong)模鍛成型(xing)和切削加工(gong)或(huo)利用(yong)型(xing)材直(zhi)接加工(gong)等(deng)方法制(zhi)造(zao)的(de)管(guan)(guan)件(jian)(jian)稱為鍛鋼制(zhi)螺紋管(guan)(guan)件(jian)(jian)。這種(zhong)管(guan)(guan)件(jian)(jian)的(de)規格較小，通常公(gong)稱通徑范圍為DN8～DN100。
管件的種類及代號見表11-1
