管(guan)(guan)件(jian)是將管(guan)(guan)子(zi)(zi)連接(jie)(jie)成管(guan)(guan)路的零(ling)件(jian)。根(gen)據連接(jie)(jie)方(fang)(fang)法(fa)可分為承插(cha)式管(guan)(guan)件(jian)、螺紋管(guan)(guan)件(jian)、法(fa)蘭(lan)管(guan)(guan)件(jian)和(he)焊接(jie)(jie)管(guan)(guan)件(jian)四類(lei)。多(duo)用(yong)與(yu)管(guan)(guan)子(zi)(zi)相同(tong)的材料制成。有彎(wan)頭（肘管(guan)(guan)）、法(fa)蘭(lan)、三(san)通(tong)管(guan)(guan)、四通(tong)管(guan)(guan)（十字頭）和(he)異(yi)徑(jing)(jing)管(guan)(guan)（大小頭）等。彎(wan)頭用(yong)于(yu)管(guan)(guan)道轉彎(wan)的地(di)(di)方(fang)(fang)；法(fa)蘭(lan)用(yong)于(yu)使管(guan)(guan)子(zi)(zi)與(yu)管(guan)(guan)子(zi)(zi)相互連接(jie)(jie)的零(ling)件(jian)，連接(jie)(jie)于(yu)管(guan)(guan)端，三(san)通(tong)管(guan)(guan)用(yong)于(yu)三(san)根(gen)管(guan)(guan)子(zi)(zi)匯集的地(di)(di)方(fang)(fang)；四通(tong)管(guan)(guan)用(yong)于(yu)四根(gen)管(guan)(guan)子(zi)(zi)匯集的地(di)(di)方(fang)(fang)；異(yi)徑(jing)(jing)管(guan)(guan)用(yong)于(yu)不(bu)同(tong)管(guan)(guan)徑(jing)(jing)的兩根(gen)管(guan)(guan)子(zi)(zi)相連接(jie)(jie)的地(di)(di)方(fang)(fang)。