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套管(guan)(guan)(guan)伸(shen)縮節由能夠作軸向(xiang)相對運動(dong)的(de)(de)內外(wai)(wai)套管(guan)(guan)(guan)組(zu)成。內外(wai)(wai)套管(guan)(guan)(guan)之間采用(yong)(yong)填料函密(mi)封(feng)(feng)。使用(yong)(yong)時保持兩端管(guan)(guan)(guan)子(zi)在一條軸線上(shang)移動(dong)。產(chan)品主(zhu)要有(you)(you)套筒(tong)(芯管(guan)(guan)(guan)),外(wai)(wai)殼,密(mi)封(feng)(feng)材料等(deng)組(zu)成.用(yong)(yong)于(yu)補(bu)償管(guan)(guan)(guan)道的(de)(de)軸向(xiang)伸(shen)縮及任意角度的(de)(de)軸向(xiang)轉(zhuan)動(dong).具有(you)(you)體積(ji)小補(bu)償量大的(de)(de)特點適用(yong)(yong)于(yu)熱(re)水(shui)、蒸氣(qi)、油脂類介質,通過(guo)滑動(dong)套筒(tong)對外(wai)(wai)套筒(tong)的(de)(de)滑移運動(dong),達到熱(re)膨脹的(de)(de)補(bu)償。