溝槽管(guan)(guan)件是(shi)一種(zhong)新型的鋼管(guan)(guan)連(lian)(lian)接管(guan)(guan)件，也(ye)叫卡(ka)箍連(lian)(lian)接，具有很多優點，溝槽管(guan)(guan)件連(lian)(lian)接作為(wei)一種(zhong)先進的管(guan)(guan)道連(lian)(lian)接方式，即(ji)(ji)可以明(ming)設也(ye)可以埋(mai)設，即(ji)(ji)有鋼性接頭(tou)，也(ye)有柔性接頭(tou)，因(yin)此具有廣(guang)泛(fan)的適(shi)用范圍。而機械(xie)(xie)三通(tong)與普通(tong)三通(tong)作用一致。機械(xie)(xie)三通(tong)分為(wei)溝槽機械(xie)(xie)三通(tong)和螺紋(wen)機械(xie)(xie)三通(tong)，在鋼管(guan)(guan)上用開(kai)孔機開(kai)孔，然后將機械(xie)(xie)三通(tong)卡(ka)入孔洞，孔四周(zhou)由密封圈(quan)沿管(guan)(guan)壁密封。

《消防給水(shui)及(ji)消火栓系統技術(shu)規(gui)范(fan)》GB 50974 12.3.12-6規(gui)定，配水(shui)干管(guan)(guan)（立管(guan)(guan)）與配水(shui)管(guan)(guan)（水(shui)平管(guan)(guan)）連接(jie)(jie)，應(ying)采用溝槽式管(guan)(guan)件，不應(ying)采用機械三(san)通(tong)(tong)。但是機械三(san)通(tong)(tong)可(ke)用于(yu)直接(jie)(jie)在(zai)(zai)鋼管(guan)(guan)上(shang)接(jie)(jie)出支管(guan)(guan)，在(zai)(zai)消防管(guan)(guan)道及(ji)噴淋(lin)管(guan)(guan)道的安裝上(shang)有較多應(ying)用，在(zai)(zai)需(xu)要分流或合(he)流的時候可(ke)以采用機械三(san)通(tong)(tong)。

我國于1998年(nian)成(cheng)功開(kai)發了溝槽式(shi)管件，很快在(zai)工(gong)程中被采(cai)用(yong)，目(mu)前技術成(cheng)熟，已(yi)經在(zai)生(sheng)產(chan)、生(sheng)活給水(shui)以及消火栓等系統(tong)中廣泛應(ying)用(yong)，其優點是施(shi)工(gong)、維修方便(bian)，強度密封性(xing)能(neng)好、占(zhan)據空間(jian)小，美觀等。溝槽式(shi)管件連接施(shi)工(gong)時(shi)，管道的(de)溝槽和開(kai)孔應(ying)用(yong)專(zhuan)用(yong)的(de)滾槽機、開(kai)孔機進(jin)行加工(gong)。

溝槽(cao)管(guan)件連接技術(shu)的(de)應用，使復雜的(de)管(guan)道連接工序(xu)變得(de)簡單、快捷(jie)、方便，使管(guan)道連接技術(shu)向前邁(mai)了(le)一(yi)大步(bu)。而機械(xie)三(san)通(tong)(tong)(tong)是在直管(guan)上開(kai)口，用機械(xie)三(san)通(tong)(tong)(tong)鋼(gang)卡(ka)卡(ka)住即(ji)可，主(zhu)管(guan)是整段，支管(guan)是單根，工程量是一(yi)個(ge)(ge)三(san)通(tong)(tong)(tong)（機械(xie)螺紋(wen)三(san)通(tong)(tong)(tong)），或1個(ge)(ge)三(san)通(tong)(tong)(tong)+1個(ge)(ge)鋼(gang)卡(ka)（機械(xie)卡(ka)箍三(san)通(tong)(tong)(tong)）；普通(tong)(tong)(tong)溝槽(cao)式三(san)通(tong)(tong)(tong)，是三(san)個(ge)(ge)管(guan)段用溝槽(cao)三(san)通(tong)(tong)(tong)相(xiang)連；工程量是1個(ge)(ge)三(san)通(tong)(tong)(tong)3個(ge)(ge)鋼(gang)卡(ka)。