沟(gou)(gou)槽(cao)管(guan)件(jian)是(shi)一(yi)种新型的钢(gang)(gang)管(guan)连接(jie)(jie)管(guan)件(jian)，也(ye)叫卡箍连接(jie)(jie)，具(ju)有很多(duo)优点，沟(gou)(gou)槽(cao)管(guan)件(jian)连接(jie)(jie)作为(wei)一(yi)种先进的管(guan)道连接(jie)(jie)方(fang)式(shi)，即可以明设也(ye)可以埋设，即有钢(gang)(gang)性(xing)接(jie)(jie)头，也(ye)有柔(rou)性(xing)接(jie)(jie)头，因(yin)此具(ju)有广泛的适用(yong)(yong)范围。而机(ji)(ji)械三(san)通(tong)(tong)与普(pu)通(tong)(tong)三(san)通(tong)(tong)作用(yong)(yong)一(yi)致。机(ji)(ji)械三(san)通(tong)(tong)分为(wei)沟(gou)(gou)槽(cao)机(ji)(ji)械三(san)通(tong)(tong)和螺(luo)纹机(ji)(ji)械三(san)通(tong)(tong)，在钢(gang)(gang)管(guan)上用(yong)(yong)开(kai)孔(kong)机(ji)(ji)开(kai)孔(kong)，然后将机(ji)(ji)械三(san)通(tong)(tong)卡入孔(kong)洞，孔(kong)四周由(you)密(mi)封圈(quan)沿(yan)管(guan)壁密(mi)封。
《消防给水(shui)及(ji)消火栓系(xi)统技术规范》GB 50974 12.3.12-6规定(ding)，配水(shui)干管(guan)（立管(guan)）与配水(shui)管(guan)（水(shui)平管(guan)）连接(jie)(jie)，应采用沟槽(cao)式(shi)管(guan)件，不应采用机械三(san)(san)通(tong)(tong)。但是机械三(san)(san)通(tong)(tong)可用于直接(jie)(jie)在(zai)钢(gang)管(guan)上(shang)接(jie)(jie)出(chu)支管(guan)，在(zai)消防管(guan)道(dao)及(ji)喷淋管(guan)道(dao)的安(an)装上(shang)有较(jiao)多应用，在(zai)需要分流(liu)或(huo)合流(liu)的时候可以采用机械三(san)(san)通(tong)(tong)。
我国于1998年成功(gong)开(kai)发了沟(gou)槽式(shi)(shi)管件，很快在(zai)(zai)工(gong)程中被采(cai)用(yong)(yong)(yong)，目前技术(shu)成熟(shu)，已经在(zai)(zai)生(sheng)产、生(sheng)活(huo)给水以及消火(huo)栓等系统中广(guang)泛应用(yong)(yong)(yong)，其优(you)点是施工(gong)、维修(xiu)方便(bian)，强度密封性能好、占据空间小，美观等。沟(gou)槽式(shi)(shi)管件连接施工(gong)时，管道的沟(gou)槽和开(kai)孔(kong)应用(yong)(yong)(yong)专用(yong)(yong)(yong)的滚槽机(ji)、开(kai)孔(kong)机(ji)进行加工(gong)。
沟槽管件连(lian)(lian)接技术(shu)的应(ying)用(yong)，使复杂的管道连(lian)(lian)接工(gong)序变得简(jian)单、快捷(jie)、方便(bian)，使管道连(lian)(lian)接技术(shu)向前迈了一(yi)大步(bu)。而机(ji)(ji)(ji)械(xie)(xie)三(san)通(tong)是(shi)(shi)(shi)在直管上开口，用(yong)机(ji)(ji)(ji)械(xie)(xie)三(san)通(tong)钢卡(ka)卡(ka)住即可(ke)，主管是(shi)(shi)(shi)整段，支管是(shi)(shi)(shi)单根，工(gong)程(cheng)量(liang)是(shi)(shi)(shi)一(yi)个(ge)三(san)通(tong)（机(ji)(ji)(ji)械(xie)(xie)螺纹三(san)通(tong)），或1个(ge)三(san)通(tong)+1个(ge)钢卡(ka)（机(ji)(ji)(ji)械(xie)(xie)卡(ka)箍(gu)三(san)通(tong)）；普(pu)通(tong)沟槽式三(san)通(tong)，是(shi)(shi)(shi)三(san)个(ge)管段用(yong)沟槽三(san)通(tong)相(xiang)连(lian)(lian)；工(gong)程(cheng)量(liang)是(shi)(shi)(shi)1个(ge)三(san)通(tong)3个(ge)钢卡(ka)。
