套(tao)(tao)管(guan)伸縮節(jie)由能夠作(zuo)軸(zhou)向(xiang)相(xiang)對(dui)運動(dong)(dong)(dong)的內外(wai)(wai)(wai)套(tao)(tao)管(guan)組(zu)成。內外(wai)(wai)(wai)套(tao)(tao)管(guan)之間采用填(tian)料(liao)(liao)函密(mi)(mi)封。使用時(shi)保持兩端管(guan)子在一條軸(zhou)線(xian)上(shang)移(yi)(yi)動(dong)(dong)(dong)。產(chan)品主要有套(tao)(tao)筒(tong)(芯管(guan)),外(wai)(wai)(wai)殼,密(mi)(mi)封材料(liao)(liao)等(deng)組(zu)成.用于補(bu)償管(guan)道的軸(zhou)向(xiang)伸縮及任意角度的軸(zhou)向(xiang)轉動(dong)(dong)(dong).具有體積小補(bu)償量大的特(te)點適用于熱水、蒸氣、油脂類介質(zhi)，通(tong)過滑動(dong)(dong)(dong)套(tao)(tao)筒(tong)對(dui)外(wai)(wai)(wai)套(tao)(tao)筒(tong)的滑移(yi)(yi)運動(dong)(dong)(dong)，達到熱膨脹的補(bu)償。