套(tao)(tao)管(guan)伸(shen)縮(suo)(suo)節由能(neng)夠(gou)作軸(zhou)向相對運(yun)動(dong)(dong)(dong)的內(nei)外(wai)套(tao)(tao)管(guan)組(zu)成。內(nei)外(wai)套(tao)(tao)管(guan)之間采用(yong)填料函密封(feng)。使用(yong)時保持兩端管(guan)子在(zai)一條軸(zhou)線上(shang)移動(dong)(dong)(dong)。產品主(zhu)要(yao)有套(tao)(tao)筒(tong)(tong)(芯管(guan)),外(wai)殼,密封(feng)材料等組(zu)成.用(yong)于(yu)(yu)補償(chang)管(guan)道的軸(zhou)向伸(shen)縮(suo)(suo)及任意角度的軸(zhou)向轉動(dong)(dong)(dong).具有體積小補償(chang)量大的特點適(shi)用(yong)于(yu)(yu)熱(re)水、蒸氣(qi)、油脂(zhi)類介質，通過滑動(dong)(dong)(dong)套(tao)(tao)筒(tong)(tong)對外(wai)套(tao)(tao)筒(tong)(tong)的滑移運(yun)動(dong)(dong)(dong)，達(da)到熱(re)膨脹的補償(chang)。