套(tao)管伸縮(suo)節(jie)由(you)能夠作軸向相對運動(dong)的內外(wai)套(tao)管組成。內外(wai)套(tao)管之間采用(yong)(yong)填料函密封。使用(yong)(yong)時保持兩(liang)端管子在一條(tiao)軸線上(shang)移(yi)動(dong)。產品主要有套(tao)筒(tong)(芯管),外(wai)殼,密封材料等組成.用(yong)(yong)于(yu)補償(chang)管道的軸向伸縮(suo)及任(ren)意角度(du)的軸向轉動(dong).具有體積小補償(chang)量大的特點適用(yong)(yong)于(yu)熱(re)水、蒸氣、油(you)脂類介質，通過滑(hua)動(dong)套(tao)筒(tong)對外(wai)套(tao)筒(tong)的滑(hua)移(yi)運動(dong)，達到熱(re)膨脹的補償(chang)。