管(guan)(guan)(guan)(guan)件(jian)(jian)是(shi)將管(guan)(guan)(guan)(guan)子(zi)(zi)連接(jie)成(cheng)管(guan)(guan)(guan)(guan)路(lu)的(de)零件(jian)(jian)。根(gen)據連接(jie)方法(fa)(fa)可(ke)分為承插式(shi)管(guan)(guan)(guan)(guan)件(jian)(jian)、螺紋管(guan)(guan)(guan)(guan)件(jian)(jian)、法(fa)(fa)蘭(lan)管(guan)(guan)(guan)(guan)件(jian)(jian)和(he)焊接(jie)管(guan)(guan)(guan)(guan)件(jian)(jian)四(si)類。多用(yong)(yong)與管(guan)(guan)(guan)(guan)子(zi)(zi)相同的(de)材料(liao)制成(cheng)。有(you)彎頭（肘管(guan)(guan)(guan)(guan)）、法(fa)(fa)蘭(lan)、三(san)(san)通管(guan)(guan)(guan)(guan)、四(si)通管(guan)(guan)(guan)(guan)（十字(zi)頭）和(he)異徑管(guan)(guan)(guan)(guan)（大小頭）等。彎頭用(yong)(yong)于(yu)(yu)(yu)(yu)管(guan)(guan)(guan)(guan)道轉彎的(de)地方；法(fa)(fa)蘭(lan)用(yong)(yong)于(yu)(yu)(yu)(yu)使管(guan)(guan)(guan)(guan)子(zi)(zi)與管(guan)(guan)(guan)(guan)子(zi)(zi)相互連接(jie)的(de)零件(jian)(jian)，連接(jie)于(yu)(yu)(yu)(yu)管(guan)(guan)(guan)(guan)端，三(san)(san)通管(guan)(guan)(guan)(guan)用(yong)(yong)于(yu)(yu)(yu)(yu)三(san)(san)根(gen)管(guan)(guan)(guan)(guan)子(zi)(zi)匯集的(de)地方；四(si)通管(guan)(guan)(guan)(guan)用(yong)(yong)于(yu)(yu)(yu)(yu)四(si)根(gen)管(guan)(guan)(guan)(guan)子(zi)(zi)匯集的(de)地方；異徑管(guan)(guan)(guan)(guan)用(yong)(yong)于(yu)(yu)(yu)(yu)不(bu)同管(guan)(guan)(guan)(guan)徑的(de)兩(liang)根(gen)管(guan)(guan)(guan)(guan)子(zi)(zi)相連接(jie)的(de)地方。