套(tao)(tao)管(guan)(guan)伸(shen)縮節由(you)能夠(gou)作軸(zhou)(zhou)向(xiang)(xiang)(xiang)相對(dui)(dui)運動(dong)(dong)的內外(wai)(wai)(wai)套(tao)(tao)管(guan)(guan)組(zu)成。內外(wai)(wai)(wai)套(tao)(tao)管(guan)(guan)之間(jian)采用(yong)填料函密(mi)封(feng)。使(shi)用(yong)時保(bao)持兩(liang)端管(guan)(guan)子在一條軸(zhou)(zhou)線上移(yi)動(dong)(dong)。產(chan)品主要(yao)有(you)套(tao)(tao)筒(芯管(guan)(guan)),外(wai)(wai)(wai)殼,密(mi)封(feng)材料等組(zu)成.用(yong)于(yu)補(bu)償管(guan)(guan)道的軸(zhou)(zhou)向(xiang)(xiang)(xiang)伸(shen)縮及任意(yi)角度的軸(zhou)(zhou)向(xiang)(xiang)(xiang)轉動(dong)(dong).具有(you)體積小補(bu)償量大的特點適(shi)用(yong)于(yu)熱(re)水、蒸氣、油(you)脂類介質(zhi)，通過滑動(dong)(dong)套(tao)(tao)筒對(dui)(dui)外(wai)(wai)(wai)套(tao)(tao)筒的滑移(yi)運動(dong)(dong)，達到熱(re)膨脹的補(bu)償。