套(tao)(tao)(tao)管伸(shen)縮節由能夠作(zuo)軸向(xiang)相(xiang)對運動(dong)(dong)的(de)內外套(tao)(tao)(tao)管組成(cheng)。內外套(tao)(tao)(tao)管之間采用(yong)填料(liao)函密封。使(shi)用(yong)時保持(chi)兩(liang)端管子在(zai)一(yi)條軸線上移(yi)動(dong)(dong)。產品主要有套(tao)(tao)(tao)筒(tong)(tong)(芯管),外殼,密封材料(liao)等組成(cheng).用(yong)于補(bu)(bu)償(chang)(chang)管道(dao)的(de)軸向(xiang)伸(shen)縮及(ji)任(ren)意角度的(de)軸向(xiang)轉動(dong)(dong).具有體積小補(bu)(bu)償(chang)(chang)量大的(de)特點適(shi)用(yong)于熱水、蒸氣(qi)、油(you)脂類介質，通過滑(hua)動(dong)(dong)套(tao)(tao)(tao)筒(tong)(tong)對外套(tao)(tao)(tao)筒(tong)(tong)的(de)滑(hua)移(yi)運動(dong)(dong)，達到熱膨脹的(de)補(bu)(bu)償(chang)(chang)。