管(guan)(guan)(guan)(guan)件(jian)是將(jiang)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)。根據(ju)連接(jie)方(fang)法(fa)可(ke)分為承插(cha)式(shi)管(guan)(guan)(guan)(guan)件(jian)、螺紋管(guan)(guan)(guan)(guan)件(jian)、法(fa)蘭管(guan)(guan)(guan)(guan)件(jian)和焊接(jie)管(guan)(guan)(guan)(guan)件(jian)四類。多用(yong)(yong)(yong)與(yu)(yu)管(guan)(guan)(guan)(guan)子(zi)(zi)相(xiang)同(tong)的(de)材料制成(cheng)。有彎頭（肘(zhou)管(guan)(guan)(guan)(guan)）、法(fa)蘭、三(san)通(tong)管(guan)(guan)(guan)(guan)、四通(tong)管(guan)(guan)(guan)(guan)（十字頭）和異徑管(guan)(guan)(guan)(guan)（大小頭）等。彎頭用(yong)(yong)(yong)于(yu)(yu)管(guan)(guan)(guan)(guan)道轉彎的(de)地(di)方(fang)；法(fa)蘭用(yong)(yong)(yong)于(yu)(yu)使(shi)管(guan)(guan)(guan)(guan)子(zi)(zi)與(yu)(yu)管(guan)(guan)(guan)(guan)子(zi)(zi)相(xiang)互(hu)連接(jie)的(de)零件(jian)，連接(jie)于(yu)(yu)管(guan)(guan)(guan)(guan)端，三(san)通(tong)管(guan)(guan)(guan)(guan)用(yong)(yong)(yong)于(yu)(yu)三(san)根管(guan)(guan)(guan)(guan)子(zi)(zi)匯集(ji)的(de)地(di)方(fang)；四通(tong)管(guan)(guan)(guan)(guan)用(yong)(yong)(yong)于(yu)(yu)四根管(guan)(guan)(guan)(guan)子(zi)(zi)匯集(ji)的(de)地(di)方(fang)；異徑管(guan)(guan)(guan)(guan)用(yong)(yong)(yong)于(yu)(yu)不同(tong)管(guan)(guan)(guan)(guan)徑的(de)兩根管(guan)(guan)(guan)(guan)子(zi)(zi)相(xiang)連接(jie)的(de)地(di)方(fang)。