管(guan)(guan)(guan)件(jian)(jian)是將管(guan)(guan)(guan)子(zi)連(lian)(lian)接(jie)成(cheng)管(guan)(guan)(guan)路的(de)(de)零(ling)件(jian)(jian)。根據(ju)連(lian)(lian)接(jie)方法(fa)可分為承插式管(guan)(guan)(guan)件(jian)(jian)、螺紋管(guan)(guan)(guan)件(jian)(jian)、法(fa)蘭管(guan)(guan)(guan)件(jian)(jian)和(he)焊接(jie)管(guan)(guan)(guan)件(jian)(jian)四(si)類。多用與管(guan)(guan)(guan)子(zi)相(xiang)同(tong)的(de)(de)材料制成(cheng)。有彎(wan)(wan)(wan)頭（肘(zhou)管(guan)(guan)(guan)）、法(fa)蘭、三通(tong)管(guan)(guan)(guan)、四(si)通(tong)管(guan)(guan)(guan)（十字頭）和(he)異徑(jing)管(guan)(guan)(guan)（大小頭）等。彎(wan)(wan)(wan)頭用于(yu)管(guan)(guan)(guan)道轉彎(wan)(wan)(wan)的(de)(de)地方；法(fa)蘭用于(yu)使(shi)管(guan)(guan)(guan)子(zi)與管(guan)(guan)(guan)子(zi)相(xiang)互(hu)連(lian)(lian)接(jie)的(de)(de)零(ling)件(jian)(jian)，連(lian)(lian)接(jie)于(yu)管(guan)(guan)(guan)端，三通(tong)管(guan)(guan)(guan)用于(yu)三根管(guan)(guan)(guan)子(zi)匯(hui)集的(de)(de)地方；四(si)通(tong)管(guan)(guan)(guan)用于(yu)四(si)根管(guan)(guan)(guan)子(zi)匯(hui)集的(de)(de)地方；異徑(jing)管(guan)(guan)(guan)用于(yu)不同(tong)管(guan)(guan)(guan)徑(jing)的(de)(de)兩根管(guan)(guan)(guan)子(zi)相(xiang)連(lian)(lian)接(jie)的(de)(de)地方。