管(guan)(guan)(guan)件是(shi)將管(guan)(guan)(guan)子(zi)(zi)(zi)連接(jie)成管(guan)(guan)(guan)路的(de)(de)零(ling)件。根據連接(jie)方(fang)(fang)法(fa)可(ke)分為承插(cha)式管(guan)(guan)(guan)件、螺紋管(guan)(guan)(guan)件、法(fa)蘭管(guan)(guan)(guan)件和焊接(jie)管(guan)(guan)(guan)件四(si)類。多用(yong)與管(guan)(guan)(guan)子(zi)(zi)(zi)相(xiang)同(tong)的(de)(de)材料制成。有彎頭(tou)（肘管(guan)(guan)(guan)）、法(fa)蘭、三(san)通(tong)管(guan)(guan)(guan)、四(si)通(tong)管(guan)(guan)(guan)（十字(zi)頭(tou)）和異徑(jing)管(guan)(guan)(guan)（大小(xiao)頭(tou)）等。彎頭(tou)用(yong)于(yu)管(guan)(guan)(guan)道轉彎的(de)(de)地(di)方(fang)(fang)；法(fa)蘭用(yong)于(yu)使管(guan)(guan)(guan)子(zi)(zi)(zi)與管(guan)(guan)(guan)子(zi)(zi)(zi)相(xiang)互連接(jie)的(de)(de)零(ling)件，連接(jie)于(yu)管(guan)(guan)(guan)端(duan)，三(san)通(tong)管(guan)(guan)(guan)用(yong)于(yu)三(san)根管(guan)(guan)(guan)子(zi)(zi)(zi)匯(hui)集(ji)的(de)(de)地(di)方(fang)(fang)；四(si)通(tong)管(guan)(guan)(guan)用(yong)于(yu)四(si)根管(guan)(guan)(guan)子(zi)(zi)(zi)匯(hui)集(ji)的(de)(de)地(di)方(fang)(fang)；異徑(jing)管(guan)(guan)(guan)用(yong)于(yu)不同(tong)管(guan)(guan)(guan)徑(jing)的(de)(de)兩根管(guan)(guan)(guan)子(zi)(zi)(zi)相(xiang)連接(jie)的(de)(de)地(di)方(fang)(fang)。