濰城需牢記填料改集式密封的這些安裝要領
常用的(de)(de)密(mi)封(feng)(feng)(feng)型式(shi)主(zhu)要有填(tian)料密(mi)封(feng)(feng)(feng)、機械密(mi)封(feng)(feng)(feng)等,填(tian)料密(mi)封(feng)(feng)(feng)。填(tian)料改集式(shi)密(mi)封(feng)(feng)(feng)是一(yi)種(zhong)較為原(yuan)始(shi)的(de)(de)接觸式(shi)密(mi)封(feng)(feng)(feng),具有結構簡(jian)單、成(cheng)本低、更換簡(jian)便等優(you)點,由于這些優(you)點,因而在石(shi)油工業...