鳳凰需牢記填料改集式密封的這些安裝要領
常用的密(mi)封(feng)(feng)(feng)(feng)型式主要有填料密(mi)封(feng)(feng)(feng)(feng)、機械密(mi)封(feng)(feng)(feng)(feng)等,填料密(mi)封(feng)(feng)(feng)(feng)。填料改集式密(mi)封(feng)(feng)(feng)(feng)是一(yi)種(zhong)較為(wei)原始的接觸式密(mi)封(feng)(feng)(feng)(feng),具有結構簡單、成(cheng)本低(di)、更(geng)換簡便等優(you)點,由于這些(xie)優(you)點,因而在石油(you)工業...