房縣需牢記填料改集式密封的這些安裝要領
常(chang)用的密(mi)(mi)(mi)封(feng)型式(shi)主(zhu)要(yao)有(you)填料密(mi)(mi)(mi)封(feng)、機(ji)械密(mi)(mi)(mi)封(feng)等,填料密(mi)(mi)(mi)封(feng)。填料改集(ji)式(shi)密(mi)(mi)(mi)封(feng)是一種較為原始的接觸式(shi)密(mi)(mi)(mi)封(feng),具有(you)結構簡單、成(cheng)本低(di)、更(geng)換簡便等優(you)點(dian),由(you)于這些(xie)優(you)點(dian),因而在石(shi)油(you)工業...