市中需牢記填料改集式密封的這些安裝要領
常(chang)用(yong)的(de)密封(feng)(feng)型式(shi)主要有填(tian)(tian)料密封(feng)(feng)、機械密封(feng)(feng)等,填(tian)(tian)料密封(feng)(feng)。填(tian)(tian)料改集式(shi)密封(feng)(feng)是一種較為(wei)原始的(de)接觸式(shi)密封(feng)(feng),具有結構簡單、成本低、更換簡便(bian)等優點(dian),由(you)于這些優點(dian),因而在(zai)石油(you)工業...